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USN-3617-2: Linux (HWE) vulnerabilities

Ubuntu security notices - 2018.04.03, k - 22:40
linux-hwe, linux-gcp, linux-oem vulnerabilities

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 16.04 LTS
Summary

Several security issues were fixed in the Linux kernel.

Software Description
  • linux-gcp - Linux kernel for Google Cloud Platform (GCP) systems
  • linux-hwe - Linux hardware enablement (HWE) kernel
  • linux-oem - Linux kernel for OEM processors
Details

USN-3617-1 fixed vulnerabilities in the Linux kernel for Ubuntu 17.10. This update provides the corresponding updates for the Linux Hardware Enablement (HWE) kernel from Ubuntu 17.10 for Ubuntu 16.04 LTS.

It was discovered that a race condition leading to a use-after-free vulnerability existed in the ALSA PCM subsystem of the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-0861)

It was discovered that the KVM implementation in the Linux kernel allowed passthrough of the diagnostic I/O port 0x80. An attacker in a guest VM could use this to cause a denial of service (system crash) in the host OS. (CVE-2017-1000407)

It was discovered that a use-after-free vulnerability existed in the network namespaces implementation in the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-15129)

Andrey Konovalov discovered that the usbtest device driver in the Linux kernel did not properly validate endpoint metadata. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2017-16532)

Andrey Konovalov discovered that the SoundGraph iMON USB driver in the Linux kernel did not properly validate device metadata. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2017-16537)

Andrey Konovalov discovered that the IMS Passenger Control Unit USB driver in the Linux kernel did not properly validate device descriptors. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2017-16645)

Andrey Konovalov discovered that the DiBcom DiB0700 USB DVB driver in the Linux kernel did not properly handle detach events. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2017-16646)

Andrey Konovalov discovered that the ASIX Ethernet USB driver in the Linux kernel did not properly handle suspend and resume events. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2017-16647)

Andrey Konovalov discovered that the CDC USB Ethernet driver did not properly validate device descriptors. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2017-16649)

Andrey Konovalov discovered that the QMI WWAN USB driver did not properly validate device descriptors. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2017-16650)

It was discovered that the HugeTLB component of the Linux kernel did not properly handle holes in hugetlb ranges. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2017-16994)

It was discovered that the netfilter component of the Linux did not properly restrict access to the connection tracking helpers list. A local attacker could use this to bypass intended access restrictions. (CVE-2017-17448)

It was discovered that the netfilter passive OS fingerprinting (xt_osf) module did not properly perform access control checks. A local attacker could improperly modify the system-wide OS fingerprint list. (CVE-2017-17450)

Dmitry Vyukov discovered that the KVM implementation in the Linux kernel contained an out-of-bounds read when handling memory-mapped I/O. A local attacker could use this to expose sensitive information. (CVE-2017-17741)

It was discovered that the Salsa20 encryption algorithm implementations in the Linux kernel did not properly handle zero-length inputs. A local attacker could use this to cause a denial of service (system crash). (CVE-2017-17805)

It was discovered that the HMAC implementation did not validate the state of the underlying cryptographic hash algorithm. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-17806)

It was discovered that the keyring implementation in the Linux kernel did not properly check permissions when a key request was performed on a tasks’ default keyring. A local attacker could use this to add keys to unauthorized keyrings. (CVE-2017-17807)

It was discovered that a race condition existed in the OCFS2 file system implementation in the Linux kernel. A local attacker could use this to cause a denial of service (kernel deadlock). (CVE-2017-18204)

It was discovered that the Broadcom NetXtremeII ethernet driver in the Linux kernel did not properly validate Generic Segment Offload (GSO) packet sizes. An attacker could use this to cause a denial of service (interface unavailability). (CVE-2018-1000026)

It was discovered that the Reliable Datagram Socket (RDS) implementation in the Linux kernel contained an out-of-bounds during RDMA page allocation. An attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-5332)

Mohamed Ghannam discovered a null pointer dereference in the RDS (Reliable Datagram Sockets) protocol implementation of the Linux kernel. A local attacker could use this to cause a denial of service (system crash). (CVE-2018-5333)

范龙飞 discovered that a race condition existed in loop block device implementation in the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-5344)

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 16.04 LTS
linux-image-4.13.0-1012-gcp - 4.13.0-1012.16
linux-image-4.13.0-1022-oem - 4.13.0-1022.24
linux-image-4.13.0-38-generic - 4.13.0-38.43~16.04.1
linux-image-4.13.0-38-generic-lpae - 4.13.0-38.43~16.04.1
linux-image-4.13.0-38-lowlatency - 4.13.0-38.43~16.04.1
linux-image-gcp - 4.13.0.1012.14
linux-image-generic-hwe-16.04 - 4.13.0.38.57
linux-image-generic-lpae-hwe-16.04 - 4.13.0.38.57
linux-image-gke - 4.13.0.1012.14
linux-image-lowlatency-hwe-16.04 - 4.13.0.38.57
linux-image-oem - 4.13.0.1022.26

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

After a standard system update you need to reboot your computer to make all the necessary changes.

ATTENTION: Due to an unavoidable ABI change the kernel updates have been given a new version number, which requires you to recompile and reinstall all third party kernel modules you might have installed. Unless you manually uninstalled the standard kernel metapackages (e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual, linux-powerpc), a standard system upgrade will automatically perform this as well.

References
Kategóriák: Securiy

USN-3617-1: Linux kernel vulnerabilities

Ubuntu security notices - 2018.04.03, k - 21:43
linux vulnerabilities

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 17.10
Summary

Several security issues were fixed in the Linux kernel.

Software Description
  • linux - Linux kernel
Details

It was discovered that a race condition leading to a use-after-free vulnerability existed in the ALSA PCM subsystem of the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-0861)

It was discovered that the KVM implementation in the Linux kernel allowed passthrough of the diagnostic I/O port 0x80. An attacker in a guest VM could use this to cause a denial of service (system crash) in the host OS. (CVE-2017-1000407)

It was discovered that a use-after-free vulnerability existed in the network namespaces implementation in the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-15129)

Andrey Konovalov discovered that the usbtest device driver in the Linux kernel did not properly validate endpoint metadata. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2017-16532)

Andrey Konovalov discovered that the SoundGraph iMON USB driver in the Linux kernel did not properly validate device metadata. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2017-16537)

Andrey Konovalov discovered that the IMS Passenger Control Unit USB driver in the Linux kernel did not properly validate device descriptors. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2017-16645)

Andrey Konovalov discovered that the DiBcom DiB0700 USB DVB driver in the Linux kernel did not properly handle detach events. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2017-16646)

Andrey Konovalov discovered that the ASIX Ethernet USB driver in the Linux kernel did not properly handle suspend and resume events. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2017-16647)

Andrey Konovalov discovered that the CDC USB Ethernet driver did not properly validate device descriptors. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2017-16649)

Andrey Konovalov discovered that the QMI WWAN USB driver did not properly validate device descriptors. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2017-16650)

It was discovered that the HugeTLB component of the Linux kernel did not properly handle holes in hugetlb ranges. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2017-16994)

It was discovered that the netfilter component of the Linux did not properly restrict access to the connection tracking helpers list. A local attacker could use this to bypass intended access restrictions. (CVE-2017-17448)

It was discovered that the netfilter passive OS fingerprinting (xt_osf) module did not properly perform access control checks. A local attacker could improperly modify the system-wide OS fingerprint list. (CVE-2017-17450)

Dmitry Vyukov discovered that the KVM implementation in the Linux kernel contained an out-of-bounds read when handling memory-mapped I/O. A local attacker could use this to expose sensitive information. (CVE-2017-17741)

It was discovered that the Salsa20 encryption algorithm implementations in the Linux kernel did not properly handle zero-length inputs. A local attacker could use this to cause a denial of service (system crash). (CVE-2017-17805)

It was discovered that the HMAC implementation did not validate the state of the underlying cryptographic hash algorithm. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-17806)

It was discovered that the keyring implementation in the Linux kernel did not properly check permissions when a key request was performed on a tasks’ default keyring. A local attacker could use this to add keys to unauthorized keyrings. (CVE-2017-17807)

It was discovered that a race condition existed in the OCFS2 file system implementation in the Linux kernel. A local attacker could use this to cause a denial of service (kernel deadlock). (CVE-2017-18204)

It was discovered that the Broadcom NetXtremeII ethernet driver in the Linux kernel did not properly validate Generic Segment Offload (GSO) packet sizes. An attacker could use this to cause a denial of service (interface unavailability). (CVE-2018-1000026)

It was discovered that the Reliable Datagram Socket (RDS) implementation in the Linux kernel contained an out-of-bounds during RDMA page allocation. An attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-5332)

Mohamed Ghannam discovered a null pointer dereference in the RDS (Reliable Datagram Sockets) protocol implementation of the Linux kernel. A local attacker could use this to cause a denial of service (system crash). (CVE-2018-5333)

范龙飞 discovered that a race condition existed in loop block device implementation in the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-5344)

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 17.10
linux-image-4.13.0-38-generic - 4.13.0-38.43
linux-image-4.13.0-38-generic-lpae - 4.13.0-38.43
linux-image-4.13.0-38-lowlatency - 4.13.0-38.43
linux-image-generic - 4.13.0.38.41
linux-image-generic-lpae - 4.13.0.38.41
linux-image-lowlatency - 4.13.0.38.41

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

After a standard system update you need to reboot your computer to make all the necessary changes.

ATTENTION: Due to an unavoidable ABI change the kernel updates have been given a new version number, which requires you to recompile and reinstall all third party kernel modules you might have installed. Unless you manually uninstalled the standard kernel metapackages (e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual, linux-powerpc), a standard system upgrade will automatically perform this as well.

References
Kategóriák: Securiy

USN-3616-1: Python Crypto vulnerability

Ubuntu security notices - 2018.04.03, k - 19:53
python-crypto vulnerability

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 17.10
  • Ubuntu 16.04 LTS
  • Ubuntu 14.04 LTS
Summary

Python Crypto could expose sensitive information.

Software Description
  • python-crypto - cryptographic algorithms and protocols for Python
Details

It was discovered that Python Crypto incorrectly generated ElGamal key parameters. A remote attacker could possibly use this issue to obtain sensitive information.

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 17.10
python-crypto - 2.6.1-7ubuntu0.1
python3-crypto - 2.6.1-7ubuntu0.1
Ubuntu 16.04 LTS
python-crypto - 2.6.1-6ubuntu0.16.04.3
python3-crypto - 2.6.1-6ubuntu0.16.04.3
Ubuntu 14.04 LTS
python-crypto - 2.6.1-4ubuntu0.3
python3-crypto - 2.6.1-4ubuntu0.3

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

In general, a standard system update will make all the necessary changes.

References
Kategóriák: Securiy

USN-3615-1: LibRaw vulnerabilities

Ubuntu security notices - 2018.04.03, k - 19:48
libraw vulnerabilities

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 17.10
  • Ubuntu 16.04 LTS
  • Ubuntu 14.04 LTS
Summary

LibRaw could be made to crash or run programs as your login if it opened a specially crafted file.

Software Description
  • libraw - raw image decoder library
Details

It was discovered that LibRaw incorrectly handled photo files. If a user or automated system were tricked into processing a specially crafted photo file, a remote attacker could cause applications linked against LibRaw to crash, resulting in a denial of service, or possibly execute arbitrary code.

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 17.10
libraw16 - 0.18.2-2ubuntu0.2
Ubuntu 16.04 LTS
libraw15 - 0.17.1-1ubuntu0.2
Ubuntu 14.04 LTS
libraw9 - 0.15.4-1ubuntu0.2

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

After a standard system update you need to restart your session to make all the necessary changes.

References
Kategóriák: Securiy

USN-3614-1: OpenJDK 7 vulnerabilities

Ubuntu security notices - 2018.04.02, h - 22:17
openjdk-7 vulnerabilities

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 14.04 LTS
Summary

Several security issues were fixed in OpenJDK 7.

Software Description
  • openjdk-7 - Open Source Java implementation
Details

It was discovered that a race condition existed in the cryptography implementation in OpenJDK. An attacker could possibly use this to expose sensitive information. (CVE-2018-2579)

It was discovered that the LDAP implementation in OpenJDK did not properly encode login names. A remote attacker could possibly use this to expose sensitive information. (CVE-2018-2588)

It was discovered that the DNS client implementation in OpenJDK did not properly randomize source ports. A remote attacker could use this to spoof responses to DNS queries made by Java applications. (CVE-2018-2599)

It was discovered that the Internationalization component of OpenJDK did not restrict search paths when loading resource bundle classes. A local attacker could use this to trick a user into running malicious code. (CVE-2018-2602)

It was discovered that OpenJDK did not properly restrict memory allocations when parsing DER input. A remote attacker could possibly use this to cause a denial of service. (CVE-2018-2603)

It was discovered that the Java Cryptography Extension (JCE) implementation in OpenJDK in some situations did guarantee sufficient strength of keys during key agreement. An attacker could use this to expose sensitive information. (CVE-2018-2618)

It was discovered that the Java GSS implementation in OpenJDK in some situations did not properly handle GSS contexts in the native GSS library. An attacker could possibly use this to access unauthorized resources. (CVE-2018-2629)

It was discovered that the LDAP implementation in OpenJDK did not properly handle LDAP referrals in some situations. An attacker could possibly use this to expose sensitive information or gain unauthorized privileges. (CVE-2018-2633)

It was discovered that the Java GSS implementation in OpenJDK in some situations did not properly apply subject credentials. An attacker could possibly use this to expose sensitive information or gain access to unauthorized resources. (CVE-2018-2634)

It was discovered that the Java Management Extensions (JMX) component of OpenJDK did not properly apply deserialization filters in some situations. An attacker could use this to bypass deserialization restrictions. (CVE-2018-2637)

It was discovered that a use-after-free vulnerability existed in the AWT component of OpenJDK when loading the GTK library. An attacker could possibly use this to execute arbitrary code and escape Java sandbox restrictions. (CVE-2018-2641)

It was discovered that in some situations OpenJDK did not properly validate objects when performing deserialization. An attacker could use this to cause a denial of service (application crash or excessive memory consumption). (CVE-2018-2663)

It was discovered that the AWT component of OpenJDK did not properly restrict the amount of memory allocated when deserializing some objects. An attacker could use this to cause a denial of service (excessive memory consumption). (CVE-2018-2677)

It was discovered that the JNDI component of OpenJDK did not properly restrict the amount of memory allocated when deserializing objects in some situations. An attacker could use this to cause a denial of service (excessive memory consumption). (CVE-2018-2678)

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 14.04 LTS
icedtea-7-jre-jamvm - 7u171-2.6.13-0ubuntu0.14.04.2
openjdk-7-jdk - 7u171-2.6.13-0ubuntu0.14.04.2
openjdk-7-jre - 7u171-2.6.13-0ubuntu0.14.04.2
openjdk-7-jre-headless - 7u171-2.6.13-0ubuntu0.14.04.2
openjdk-7-jre-lib - 7u171-2.6.13-0ubuntu0.14.04.2
openjdk-7-jre-zero - 7u171-2.6.13-0ubuntu0.14.04.2

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

This update uses a new upstream release, which includes additional bug fixes. After a standard system update you need to restart any Java applications or applets to make all the necessary changes.

References
Kategóriák: Securiy

USN-3613-1: OpenJDK 8 vulnerabilities

Ubuntu security notices - 2018.04.02, h - 22:15
openjdk-8 vulnerabilities

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 17.10
  • Ubuntu 16.04 LTS
Summary

Several security issues were fixed in OpenJDK 8.

Software Description
  • openjdk-8 - Open Source Java implementation
Details

It was discovered that a race condition existed in the cryptography implementation in OpenJDK. An attacker could possibly use this to expose sensitive information. (CVE-2018-2579)

It was discovered that the Hotspot component of OpenJDK did not properly validate uses of the invokeinterface JVM instruction. An attacker could possibly use this to access unauthorized resources. (CVE-2018-2582)

It was discovered that the LDAP implementation in OpenJDK did not properly encode login names. A remote attacker could possibly use this to expose sensitive information. (CVE-2018-2588)

It was discovered that the DNS client implementation in OpenJDK did not properly randomize source ports. A remote attacker could use this to spoof responses to DNS queries made by Java applications. (CVE-2018-2599)

It was discovered that the Internationalization component of OpenJDK did not restrict search paths when loading resource bundle classes. A local attacker could use this to trick a user into running malicious code. (CVE-2018-2602)

It was discovered that OpenJDK did not properly restrict memory allocations when parsing DER input. A remote attacker could possibly use this to cause a denial of service. (CVE-2018-2603)

It was discovered that the Java Cryptography Extension (JCE) implementation in OpenJDK in some situations did guarantee sufficient strength of keys during key agreement. An attacker could use this to expose sensitive information. (CVE-2018-2618)

It was discovered that the Java GSS implementation in OpenJDK in some situations did not properly handle GSS contexts in the native GSS library. An attacker could possibly use this to access unauthorized resources. (CVE-2018-2629)

It was discovered that the LDAP implementation in OpenJDK did not properly handle LDAP referrals in some situations. An attacker could possibly use this to expose sensitive information or gain unauthorized privileges. (CVE-2018-2633)

It was discovered that the Java GSS implementation in OpenJDK in some situations did not properly apply subject credentials. An attacker could possibly use this to expose sensitive information or gain access to unauthorized resources. (CVE-2018-2634)

It was discovered that the Java Management Extensions (JMX) component of OpenJDK did not properly apply deserialization filters in some situations. An attacker could use this to bypass deserialization restrictions. (CVE-2018-2637)

It was discovered that a use-after-free vulnerability existed in the AWT component of OpenJDK when loading the GTK library. An attacker could possibly use this to execute arbitrary code and escape Java sandbox restrictions. (CVE-2018-2641)

It was discovered that in some situations OpenJDK did not properly validate objects when performing deserialization. An attacker could use this to cause a denial of service (application crash or excessive memory consumption). (CVE-2018-2663)

It was discovered that the AWT component of OpenJDK did not properly restrict the amount of memory allocated when deserializing some objects. An attacker could use this to cause a denial of service (excessive memory consumption). (CVE-2018-2677)

It was discovered that the JNDI component of OpenJDK did not properly restrict the amount of memory allocated when deserializing objects in some situations. An attacker could use this to cause a denial of service (excessive memory consumption). (CVE-2018-2678)

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 17.10
openjdk-8-jdk - 8u162-b12-0ubuntu0.17.10.2
openjdk-8-jdk-headless - 8u162-b12-0ubuntu0.17.10.2
openjdk-8-jre - 8u162-b12-0ubuntu0.17.10.2
openjdk-8-jre-headless - 8u162-b12-0ubuntu0.17.10.2
openjdk-8-jre-zero - 8u162-b12-0ubuntu0.17.10.2
Ubuntu 16.04 LTS
openjdk-8-jdk - 8u162-b12-0ubuntu0.16.04.2
openjdk-8-jdk-headless - 8u162-b12-0ubuntu0.16.04.2
openjdk-8-jre - 8u162-b12-0ubuntu0.16.04.2
openjdk-8-jre-headless - 8u162-b12-0ubuntu0.16.04.2
openjdk-8-jre-jamvm - 8u162-b12-0ubuntu0.16.04.2
openjdk-8-jre-zero - 8u162-b12-0ubuntu0.16.04.2

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

This update uses a new upstream release, which includes additional bug fixes. After a standard system update you need to restart any Java applications or applets to make all the necessary changes.

References
Kategóriák: Securiy

USN-3587-2: Dovecot vulnerabilities

Ubuntu security notices - 2018.04.02, h - 15:41
dovecot vulnerabilities

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 12.04 ESM
Summary

Several security issues were fixed in Dovecot.

Software Description
  • dovecot - IMAP and POP3 email server
Details

USN-3587-1 fixed a vulnerability in Dovecot. This update provides the corresponding update for Ubuntu 12.04 ESM.

Original advisory details:

It was discovered that Dovecot incorrectly handled parsing certain email addresses. A remote attacker could use this issue to cause Dovecot to crash, resulting in a denial of service, or possibly obtain sensitive information. (CVE-2017-14461)

It was discovered that Dovecot incorrectly handled TLS SNI config lookups. A remote attacker could possibly use this issue to cause Dovecot to crash, resulting in a denial of service. (CVE-2017-15130)

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 12.04 ESM
dovecot-core - 1:2.0.19-0ubuntu2.5

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

In general, a standard system update will make all the necessary changes.

References
Kategóriák: Securiy

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