Protect yourself against future threats.
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AUSCERT External Security Bulletin Redistribution
ESB-2019.2001.4
Linux kernel vulnerabilities
10 June 2019
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: linux kernel
Publisher: Ubuntu
Operating System: Ubuntu
Impact/Access: Execute Arbitrary Code/Commands -- Existing Account
Denial of Service -- Existing Account
Reduced Security -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2019-11815 CVE-2019-11810 CVE-2019-11191
CVE-2019-11190
Reference: ESB-2019.1909
Original Bulletin:
https://usn.ubuntu.com/4005-1/
https://usn.ubuntu.com/4007-1/
https://usn.ubuntu.com/4007-2/
https://usn.ubuntu.com/4008-1/
https://usn.ubuntu.com/4008-2/
https://usn.ubuntu.com/4008-3/
https://usn.ubuntu.com/4006-1/
https://usn.ubuntu.com/4006-2/
Comment: This bulletin contains eight (8) Ubuntu security advisories.
Revision History: June 10 2019: Added USN-4008-3
June 7 2019: Added USN-4006-1 and USN-4006-2.
June 6 2019: Added USN-4008-1
June 5 2019: Initial Release
- --------------------------BEGIN INCLUDED TEXT--------------------
USN-4005-1: Linux kernel vulnerabilities
4 June 2019
linux, linux-aws, linux-gcp, linux-kvm, linux-raspi2, linux-snapdragon vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
o Ubuntu 19.04
Summary
Several security issues were fixed in the Linux kernel.
Software Description
o linux - Linux kernel
o linux-aws - Linux kernel for Amazon Web Services (AWS) systems
o linux-gcp - Linux kernel for Google Cloud Platform (GCP) systems
o linux-kvm - Linux kernel for cloud environments
o linux-raspi2 - Linux kernel for Raspberry Pi 2
o linux-snapdragon - Linux kernel for Snapdragon processors
Details
It was discovered that a null pointer dereference vulnerability existed in the
LSI Logic MegaRAID driver in the Linux kernel. A local attacker could use this
to cause a denial of service (system crash). (CVE-2019-11810)
It was discovered that a race condition leading to a use-after-free existed in
the Reliable Datagram Sockets (RDS) protocol implementation in the Linux
kernel. The RDS protocol is blacklisted by default in Ubuntu. If enabled, a
local attacker could use this to cause a denial of service (system crash) or
possibly execute arbitrary code. (CVE-2019-11815)
Update instructions
The problem can be corrected by updating your system to the following package
versions:
Ubuntu 19.04
linux-image-5.0.0-1007-aws - 5.0.0-1007.7
linux-image-5.0.0-1007-gcp - 5.0.0-1007.7
linux-image-5.0.0-1007-kvm - 5.0.0-1007.7
linux-image-5.0.0-1009-raspi2 - 5.0.0-1009.9
linux-image-5.0.0-1013-snapdragon - 5.0.0-1013.13
linux-image-5.0.0-16-generic - 5.0.0-16.17
linux-image-5.0.0-16-generic-lpae - 5.0.0-16.17
linux-image-5.0.0-16-lowlatency - 5.0.0-16.17
linux-image-aws - 5.0.0.1007.7
linux-image-gcp - 5.0.0.1007.7
linux-image-generic - 5.0.0.16.17
linux-image-generic-lpae - 5.0.0.16.17
linux-image-gke - 5.0.0.1007.7
linux-image-kvm - 5.0.0.1007.7
linux-image-lowlatency - 5.0.0.16.17
linux-image-raspi2 - 5.0.0.1009.6
linux-image-snapdragon - 5.0.0.1013.6
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
o CVE-2019-11810
o CVE-2019-11815
- -----------------------------------------------------------------------------
USN-4007-1: Linux kernel vulnerability
4 June 2019
linux, linux-aws, linux-gcp, linux-kvm, linux-oem, linux-oracle, linux-raspi2, linux-snapdragon vulnerability
A security issue affects these releases of Ubuntu and its derivatives:
o Ubuntu 18.04 LTS
Summary
A system hardening measure could be bypassed.
Software Description
o linux - Linux kernel
o linux-aws - Linux kernel for Amazon Web Services (AWS) systems
o linux-gcp - Linux kernel for Google Cloud Platform (GCP) systems
o linux-kvm - Linux kernel for cloud environments
o linux-oem - Linux kernel for OEM processors
o linux-oracle - Linux kernel for Oracle Cloud systems
o linux-raspi2 - Linux kernel for Raspberry Pi 2
o linux-snapdragon - Linux kernel for Snapdragon processors
Details
Federico Manuel Bento discovered that the Linux kernel did not properly apply
Address Space Layout Randomization (ASLR) in some situations for setuid a.out
binaries. A local attacker could use this to improve the chances of exploiting
an existing vulnerability in a setuid a.out binary.
As a hardening measure, this update disables a.out support.
Update instructions
The problem can be corrected by updating your system to the following package
versions:
Ubuntu 18.04 LTS
linux-image-4.15.0-1014-oracle - 4.15.0-1014.16
linux-image-4.15.0-1033-gcp - 4.15.0-1033.35
linux-image-4.15.0-1035-kvm - 4.15.0-1035.35
linux-image-4.15.0-1037-raspi2 - 4.15.0-1037.39
linux-image-4.15.0-1039-oem - 4.15.0-1039.44
linux-image-4.15.0-1040-aws - 4.15.0-1040.42
linux-image-4.15.0-1054-snapdragon - 4.15.0-1054.58
linux-image-4.15.0-51-generic - 4.15.0-51.55
linux-image-4.15.0-51-generic-lpae - 4.15.0-51.55
linux-image-4.15.0-51-lowlatency - 4.15.0-51.55
linux-image-aws - 4.15.0.1040.39
linux-image-gcp - 4.15.0.1033.35
linux-image-generic - 4.15.0.51.53
linux-image-generic-lpae - 4.15.0.51.53
linux-image-kvm - 4.15.0.1035.35
linux-image-lowlatency - 4.15.0.51.53
linux-image-oem - 4.15.0.1039.43
linux-image-oracle - 4.15.0.1014.17
linux-image-raspi2 - 4.15.0.1037.35
linux-image-snapdragon - 4.15.0.1054.57
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
o CVE-2019-11191
- -----------------------------------------------------------------------------
USN-4007-2: Linux kernel (HWE) vulnerability
4 June 2019
linux-aws-hwe, linux-hwe, linux-oracle vulnerability
A security issue affects these releases of Ubuntu and its derivatives:
o Ubuntu 16.04 LTS
Summary
A system hardening measure could be bypassed.
Software Description
o linux-aws-hwe - Linux kernel for Amazon Web Services (AWS-HWE) systems
o linux-hwe - Linux hardware enablement (HWE) kernel
o linux-oracle - Linux kernel for Oracle Cloud systems
Details
USN-4007-1 fixed vulnerabilities in the Linux kernel for Ubuntu 18.04 LTS. This
update provides the corresponding updates for the Linux Hardware Enablement
(HWE) kernel from Ubuntu 18.04 LTS for Ubuntu 16.04 LTS.
Federico Manuel Bento discovered that the Linux kernel did not properly apply
Address Space Layout Randomization (ASLR) in some situations for setuid a.out
binaries. A local attacker could use this to improve the chances of exploiting
an existing vulnerability in a setuid a.out binary.
As a hardening measure, this update disables a.out support.
Update instructions
The problem can be corrected by updating your system to the following package
versions:
Ubuntu 16.04 LTS
linux-image-4.15.0-1014-oracle - 4.15.0-1014.16~16.04.1
linux-image-4.15.0-1040-aws - 4.15.0-1040.42~16.04.1
linux-image-4.15.0-51-generic - 4.15.0-51.55~16.04.1
linux-image-4.15.0-51-generic-lpae - 4.15.0-51.55~16.04.1
linux-image-4.15.0-51-lowlatency - 4.15.0-51.55~16.04.1
linux-image-aws-hwe - 4.15.0.1040.40
linux-image-generic-hwe-16.04 - 4.15.0.51.72
linux-image-generic-lpae-hwe-16.04 - 4.15.0.51.72
linux-image-lowlatency-hwe-16.04 - 4.15.0.51.72
linux-image-oem - 4.15.0.51.72
linux-image-oracle - 4.15.0.1014.8
linux-image-virtual-hwe-16.04 - 4.15.0.51.72
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
o USN-4007-1
o CVE-2019-11191
- -----------------------------------------------------------------------------
USN-4008-1: Linux kernel vulnerabilities
4 June 2019
linux, linux-aws, linux-kvm, linux-raspi2, linux-snapdragon vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
o Ubuntu 16.04 LTS
Summary
Several security issues were fixed in the Linux kernel.
Software Description
o linux - Linux kernel
o linux-aws - Linux kernel for Amazon Web Services (AWS) systems
o linux-kvm - Linux kernel for cloud environments
o linux-raspi2 - Linux kernel for Raspberry Pi 2
o linux-snapdragon - Linux kernel for Snapdragon processors
Details
Robert A wiA cki discovered that the Linux kernel did not properly apply
Address Space Layout Randomization (ASLR) in some situations for setuid elf
binaries. A local attacker could use this to improve the chances of exploiting
an existing vulnerability in a setuid elf binary. (CVE-2019-11190)
It was discovered that a null pointer dereference vulnerability existed in the
LSI Logic MegaRAID driver in the Linux kernel. A local attacker could use this
to cause a denial of service (system crash). (CVE-2019-11810)
It was discovered that a race condition leading to a use-after-free existed in
the Reliable Datagram Sockets (RDS) protocol implementation in the Linux
kernel. The RDS protocol is blacklisted by default in Ubuntu. If enabled, a
local attacker could use this to cause a denial of service (system crash) or
possibly execute arbitrary code. (CVE-2019-11815)
Federico Manuel Bento discovered that the Linux kernel did not properly apply
Address Space Layout Randomization (ASLR) in some situations for setuid a.out
binaries. A local attacker could use this to improve the chances of exploiting
an existing vulnerability in a setuid a.out binary. (CVE-2019-11191)
As a hardening measure, this update disables a.out support.
Update instructions
The problem can be corrected by updating your system to the following package
versions:
Ubuntu 16.04 LTS
linux-image-4.4.0-1047-kvm - 4.4.0-1047.53
linux-image-4.4.0-1084-aws - 4.4.0-1084.94
linux-image-4.4.0-1110-raspi2 - 4.4.0-1110.118
linux-image-4.4.0-1114-snapdragon - 4.4.0-1114.119
linux-image-4.4.0-150-generic - 4.4.0-150.176
linux-image-4.4.0-150-generic-lpae - 4.4.0-150.176
linux-image-4.4.0-150-lowlatency - 4.4.0-150.176
linux-image-4.4.0-150-powerpc-e500mc - 4.4.0-150.176
linux-image-4.4.0-150-powerpc-smp - 4.4.0-150.176
linux-image-4.4.0-150-powerpc64-emb - 4.4.0-150.176
linux-image-4.4.0-150-powerpc64-smp - 4.4.0-150.176
linux-image-aws - 4.4.0.1084.87
linux-image-generic - 4.4.0.150.158
linux-image-generic-lpae - 4.4.0.150.158
linux-image-kvm - 4.4.0.1047.47
linux-image-lowlatency - 4.4.0.150.158
linux-image-powerpc-e500mc - 4.4.0.150.158
linux-image-powerpc-smp - 4.4.0.150.158
linux-image-powerpc64-emb - 4.4.0.150.158
linux-image-powerpc64-smp - 4.4.0.150.158
linux-image-raspi2 - 4.4.0.1110.110
linux-image-snapdragon - 4.4.0.1114.106
linux-image-virtual - 4.4.0.150.158
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
o CVE-2019-11190
o CVE-2019-11191
o CVE-2019-11810
o CVE-2019-11815
- -----------------------------------------------------------------------------
USN-4008-2: AppArmor update
5 June 2019
apparmor update
A security issue affects these releases of Ubuntu and its derivatives:
o Ubuntu 16.04 LTS
Summary
Several policy updates were made for running under the recently updated Linux
kernel.
Software Description
o apparmor - Linux security system
Details
USN-4008-1 fixed multiple security issues in the Linux kernel. This update
provides the corresponding changes to AppArmor policy for correctly operating
under the Linux kernel with fixes for CVE-2019-11190. Without these changes,
some profile transitions may be unintentionally denied due to missing mmap
('m') rules.
Original advisory details:
Robert A wiA cki discovered that the Linux kernel did not properly apply
Address Space Layout Randomization (ASLR) in some situations for setuid elf
binaries. A local attacker could use this to improve the chances of exploiting
an existing vulnerability in a setuid elf binary. (CVE-2019-11190)
It was discovered that a null pointer dereference vulnerability existed in the
LSI Logic MegaRAID driver in the Linux kernel. A local attacker could use this
to cause a denial of service (system crash). (CVE-2019-11810)
It was discovered that a race condition leading to a use-after-free existed in
the Reliable Datagram Sockets (RDS) protocol implementation in the Linux
kernel. The RDS protocol is blacklisted by default in Ubuntu. If enabled, a
local attacker could use this to cause a denial of service (system crash) or
possibly execute arbitrary code. (CVE-2019-11815)
Federico Manuel Bento discovered that the Linux kernel did not properly apply
Address Space Layout Randomization (ASLR) in some situations for setuid a.out
binaries. A local attacker could use this to improve the chances of exploiting
an existing vulnerability in a setuid a.out binary. (CVE-2019-11191)
As a hardening measure, this update disables a.out support.
Update instructions
The problem can be corrected by updating your system to the following package
versions:
Ubuntu 16.04 LTS
apparmor-profiles - 2.10.95-0ubuntu2.11
python3-apparmor - 2.10.95-0ubuntu2.11
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
o USN-4008-1
o CVE-2019-11190
- --------------------------------------------------------------------------------
USN-4008-3: Linux kernel (Xenial HWE) vulnerabilities
7 June 2019
linux-lts-xenial, linux-aws vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
o Ubuntu 14.04 ESM
Summary
Several security issues were fixed in the Linux kernel.
Software Description
o linux-aws - Linux kernel for Amazon Web Services (AWS) systems
o linux-lts-xenial - Linux hardware enablement kernel from Xenial for Trusty
Details
USN-4008-1 fixed vulnerabilities in the Linux kernel for Ubuntu 16.04 LTS. This
update provides the corresponding updates for the Linux Hardware Enablement
(HWE) kernel from Ubuntu 16.04 LTS for Ubuntu 14.04 ESM.
Robert A wiA cki discovered that the Linux kernel did not properly apply
Address Space Layout Randomization (ASLR) in some situations for setuid elf
binaries. A local attacker could use this to improve the chances of exploiting
an existing vulnerability in a setuid elf binary. (CVE-2019-11190)
It was discovered that a null pointer dereference vulnerability existed in the
LSI Logic MegaRAID driver in the Linux kernel. A local attacker could use this
to cause a denial of service (system crash). (CVE-2019-11810)
It was discovered that a race condition leading to a use-after-free existed in
the Reliable Datagram Sockets (RDS) protocol implementation in the Linux
kernel. The RDS protocol is blacklisted by default in Ubuntu. If enabled, a
local attacker could use this to cause a denial of service (system crash) or
possibly execute arbitrary code. (CVE-2019-11815)
Federico Manuel Bento discovered that the Linux kernel did not properly apply
Address Space Layout Randomization (ASLR) in some situations for setuid a.out
binaries. A local attacker could use this to improve the chances of exploiting
an existing vulnerability in a setuid a.out binary. (CVE-2019-11191)
As a hardening measure, this update disables a.out support.
Update instructions
The problem can be corrected by updating your system to the following package
versions:
Ubuntu 14.04 ESM
linux-image-4.4.0-1045-aws - 4.4.0-1045.48
linux-image-4.4.0-150-generic - 4.4.0-150.176~14.04.1
linux-image-4.4.0-150-generic-lpae - 4.4.0-150.176~14.04.1
linux-image-4.4.0-150-lowlatency - 4.4.0-150.176~14.04.1
linux-image-aws - 4.4.0.1045.46
linux-image-generic-lpae-lts-xenial - 4.4.0.150.132
linux-image-generic-lts-xenial - 4.4.0.150.132
linux-image-lowlatency-lts-xenial - 4.4.0.150.132
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
o USN-4008-1
o CVE-2019-11190
o CVE-2019-11191
o CVE-2019-11810
o CVE-2019-11815
- --------------------------------------------------------------------------------
USN-4006-1: Linux kernel vulnerability
4 June 2019
linux, linux-aws, linux-gcp, linux-kvm, linux-raspi2 vulnerability
A security issue affects these releases of Ubuntu and its derivatives:
* Ubuntu 18.10
Summary
A system hardening measure could be bypassed.
Software Description
* linux - Linux kernel
* linux-aws - Linux kernel for Amazon Web Services (AWS) systems
* linux-gcp - Linux kernel for Google Cloud Platform (GCP) systems
* linux-kvm - Linux kernel for cloud environments
* linux-raspi2 - Linux kernel for Raspberry Pi 2
Details
Federico Manuel Bento discovered that the Linux kernel did not properly apply
Address Space Layout Randomization (ASLR) in some situations for setuid a.out
binaries. A local attacker could use this to improve the chances of exploiting
an existing vulnerability in a setuid a.out binary.
As a hardening measure, this update disables a.out support.
Update instructions
The problem can be corrected by updating your system to the following package
versions:
Ubuntu 18.10
linux-image-4.18.0-1012-gcp - 4.18.0-1012.13
linux-image-4.18.0-1013-kvm - 4.18.0-1013.13
linux-image-4.18.0-1015-raspi2 - 4.18.0-1015.17
linux-image-4.18.0-1017-aws - 4.18.0-1017.19
linux-image-4.18.0-21-generic - 4.18.0-21.22
linux-image-4.18.0-21-generic-lpae - 4.18.0-21.22
linux-image-4.18.0-21-lowlatency - 4.18.0-21.22
linux-image-4.18.0-21-snapdragon - 4.18.0-21.22
linux-image-aws - 4.18.0.1017.17
linux-image-gcp - 4.18.0.1012.12
linux-image-generic - 4.18.0.21.22
linux-image-generic-lpae - 4.18.0.21.22
linux-image-gke - 4.18.0.1012.12
linux-image-kvm - 4.18.0.1013.13
linux-image-lowlatency - 4.18.0.21.22
linux-image-raspi2 - 4.18.0.1015.12
linux-image-snapdragon - 4.18.0.21.22
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
* CVE-2019-11191
- --------------------------------------------------------------------------------
USN-4006-2: Linux kernel (HWE) vulnerability
4 June 2019
linux-hwe vulnerability
A security issue affects these releases of Ubuntu and its derivatives:
* Ubuntu 18.04 LTS
Summary
A system hardening measure could be bypassed.
Software Description
* linux-hwe - Linux hardware enablement (HWE) kernel
Details
USN-4006-1 fixed a vulnerability in the Linux kernel for Ubuntu 18.10. This
update provides the corresponding updates for the Linux Hardware Enablement
(HWE) kernel from Ubuntu 18.10 for Ubuntu 18.04 LTS.
Federico Manuel Bento discovered that the Linux kernel did not properly apply
Address Space Layout Randomization (ASLR) in some situations for setuid a.out
binaries. A local attacker could use this to improve the chances of exploiting
an existing vulnerability in a setuid a.out binary.
As a hardening measure, this update disables a.out support.
Update instructions
The problem can be corrected by updating your system to the following package
versions:
Ubuntu 18.04 LTS
linux-image-4.18.0-21-generic - 4.18.0-21.22~18.04.1
linux-image-4.18.0-21-generic-lpae - 4.18.0-21.22~18.04.1
linux-image-4.18.0-21-lowlatency - 4.18.0-21.22~18.04.1
linux-image-4.18.0-21-snapdragon - 4.18.0-21.22~18.04.1
linux-image-generic-hwe-18.04 - 4.18.0.21.71
linux-image-generic-lpae-hwe-18.04 - 4.18.0.21.71
linux-image-lowlatency-hwe-18.04 - 4.18.0.21.71
linux-image-snapdragon-hwe-18.04 - 4.18.0.21.71
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
* USN-4006-1
* CVE-2019-11191
- --------------------------END INCLUDED TEXT--------------------
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