Red Hat Enterprise Linux: Updated grub2 packages that fix a bug are now available for Red Hat Enterprise
Linux 7.
Monthly Archives: January 2016
RHBA-2016:0002-1: kernel bug fix update
Red Hat Enterprise Linux: Updated kernel packages that fix one bug are now available for Red Hat
Enterprise Linux 7.
USN-2855-1: Samba vulnerabilities
Ubuntu Security Notice USN-2855-1
5th January, 2016
samba vulnerabilities
A security issue affects these releases of Ubuntu and its
derivatives:
- Ubuntu 15.10
- Ubuntu 15.04
- Ubuntu 14.04 LTS
- Ubuntu 12.04 LTS
Summary
Several security issues were fixed in Samba.
Software description
- samba
– SMB/CIFS file, print, and login server for Unix
Details
Thilo Uttendorfer discovered that the Samba LDAP server incorrectly handled
certain packets. A remote attacker could use this issue to cause the LDAP
server to stop responding, resulting in a denial of service. This issue
only affected Ubuntu 14.04 LTS, Ubuntu 15.04 and Ubuntu 15.10.
(CVE-2015-3223)
Jan Kasprzak discovered that Samba incorrectly handled certain symlinks. A
remote attacker could use this issue to access files outside the exported
share path. (CVE-2015-5252)
Stefan Metzmacher discovered that Samba did not enforce signing when
creating encrypted connections. If a remote attacker were able to perform a
man-in-the-middle attack, this flaw could be exploited to view sensitive
information. (CVE-2015-5296)
It was discovered that Samba incorrectly performed access control when
using the VFS shadow_copy2 module. A remote attacker could use this issue
to access snapshots, contrary to intended permissions. (CVE-2015-5299)
Douglas Bagnall discovered that Samba incorrectly handled certain string
lengths. A remote attacker could use this issue to possibly access
sensitive information. (CVE-2015-5330)
It was discovered that the Samba LDAP server incorrectly handled certain
packets. A remote attacker could use this issue to cause the LDAP server to
stop responding, resulting in a denial of service. This issue only affected
Ubuntu 14.04 LTS, Ubuntu 15.04 and Ubuntu 15.10. (CVE-2015-7540)
Andrew Bartlett discovered that Samba incorrectly checked administrative
privileges during creation of machine accounts. A remote attacker could
possibly use this issue to bypass intended access restrictions in certain
environments. This issue only affected Ubuntu 14.04 LTS, Ubuntu 15.04 and
Ubuntu 15.10. (CVE-2015-8467)
Update instructions
The problem can be corrected by updating your system to the following
package version:
- Ubuntu 15.10:
-
samba
2:4.1.17+dfsg-4ubuntu3.1
- Ubuntu 15.04:
-
samba
2:4.1.13+dfsg-4ubuntu3.1
- Ubuntu 14.04 LTS:
-
samba
2:4.1.6+dfsg-1ubuntu2.14.04.11
- Ubuntu 12.04 LTS:
-
samba
2:3.6.3-2ubuntu2.13
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
USN-2856-1: ldb vulnerabilities
Ubuntu Security Notice USN-2856-1
5th January, 2016
ldb vulnerabilities
A security issue affects these releases of Ubuntu and its
derivatives:
- Ubuntu 15.10
- Ubuntu 15.04
- Ubuntu 14.04 LTS
- Ubuntu 12.04 LTS
Summary
Several security issues were fixed in ldb.
Software description
- ldb
– LDAP-like embedded database
Details
Thilo Uttendorfer discovered that the ldb incorrectly handled certain zero
values. A remote attacker could use this issue to cause applications using
ldb, such as Samba, to stop responding, resulting in a denial of service.
(CVE-2015-3223)
Douglas Bagnall discovered that ldb incorrectly handled certain string
lengths. A remote attacker could use this issue to possibly access
sensitive information from memory of applications using ldb, such as Samba.
(CVE-2015-5330)
Update instructions
The problem can be corrected by updating your system to the following
package version:
- Ubuntu 15.10:
-
libldb1
2:1.1.20-2ubuntu0.1
- Ubuntu 15.04:
-
libldb1
1:1.1.18-1ubuntu0.1
- Ubuntu 14.04 LTS:
-
libldb1
1:1.1.16-1ubuntu0.1
- Ubuntu 12.04 LTS:
-
libldb1
1:1.1.4-1ubuntu0.1
To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.
After a standard system update you need to restart applications using ldb,
such as Samba, to make all the necessary changes.
References
USN-2857-1: Linux kernel vulnerability
Ubuntu Security Notice USN-2857-1
5th January, 2016
linux vulnerability
A security issue affects these releases of Ubuntu and its
derivatives:
- Ubuntu 15.04
Summary
The system could be made to run programs as an administrator.
Software description
- linux
– Linux kernel
Details
Nathan Williams discovered that overlayfs in the Linux kernel incorrectly
handled setattr operations. A local unprivileged attacker could use this to
create files with administrative permission attributes and execute
arbitrary code with elevated privileges.
Update instructions
The problem can be corrected by updating your system to the following
package version:
- Ubuntu 15.04:
-
linux-image-3.19.0-43-generic
3.19.0-43.49
-
linux-image-3.19.0-43-lowlatency
3.19.0-43.49
-
linux-image-3.19.0-43-powerpc64-smp
3.19.0-43.49
-
linux-image-3.19.0-43-generic-lpae
3.19.0-43.49
-
linux-image-3.19.0-43-powerpc64-emb
3.19.0-43.49
-
linux-image-3.19.0-43-powerpc-smp
3.19.0-43.49
-
linux-image-3.19.0-43-powerpc-e500mc
3.19.0-43.49
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-2857-2: Linux kernel (Vivid HWE) vulnerability
Ubuntu Security Notice USN-2857-2
5th January, 2016
linux-lts-vivid vulnerability
A security issue affects these releases of Ubuntu and its
derivatives:
- Ubuntu 14.04 LTS
Summary
The system could be made to run programs as an administrator.
Software description
- linux-lts-vivid
– Linux hardware enablement kernel from Vivid
Details
Nathan Williams discovered that overlayfs in the Linux kernel incorrectly
handled setattr operations. A local unprivileged attacker could use this to
create files with administrative permission attributes and execute
arbitrary code with elevated privileges.
Update instructions
The problem can be corrected by updating your system to the following
package version:
- Ubuntu 14.04 LTS:
-
linux-image-3.19.0-43-powerpc64-emb
3.19.0-43.49~14.04.1
-
linux-image-3.19.0-43-lowlatency
3.19.0-43.49~14.04.1
-
linux-image-3.19.0-43-powerpc64-smp
3.19.0-43.49~14.04.1
-
linux-image-3.19.0-43-generic-lpae
3.19.0-43.49~14.04.1
-
linux-image-3.19.0-43-powerpc-smp
3.19.0-43.49~14.04.1
-
linux-image-3.19.0-43-generic
3.19.0-43.49~14.04.1
-
linux-image-3.19.0-43-powerpc-e500mc
3.19.0-43.49~14.04.1
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-2858-1: Linux kernel vulnerability
Ubuntu Security Notice USN-2858-1
5th January, 2016
linux vulnerability
A security issue affects these releases of Ubuntu and its
derivatives:
- Ubuntu 15.10
Summary
The system could be made to run programs as an administrator.
Software description
- linux
– Linux kernel
Details
Nathan Williams discovered that overlayfs in the Linux kernel incorrectly
handled setattr operations. A local unprivileged attacker could use this to
create files with administrative permission attributes and execute
arbitrary code with elevated privileges.
Update instructions
The problem can be corrected by updating your system to the following
package version:
- Ubuntu 15.10:
-
linux-image-4.2.0-23-powerpc64-emb
4.2.0-23.28
-
linux-image-4.2.0-23-lowlatency
4.2.0-23.28
-
linux-image-4.2.0-23-powerpc64-smp
4.2.0-23.28
-
linux-image-4.2.0-23-generic
4.2.0-23.28
-
linux-image-4.2.0-23-powerpc-smp
4.2.0-23.28
-
linux-image-4.2.0-23-generic-lpae
4.2.0-23.28
-
linux-image-4.2.0-23-powerpc-e500mc
4.2.0-23.28
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-2858-2: Linux kernel (Wily HWE) vulnerability
Ubuntu Security Notice USN-2858-2
5th January, 2016
linux-lts-wily vulnerability
A security issue affects these releases of Ubuntu and its
derivatives:
- Ubuntu 14.04 LTS
Summary
The system could be made to run programs as an administrator.
Software description
- linux-lts-wily
– Linux hardware enablement kernel from Wily
Details
Nathan Williams discovered that overlayfs in the Linux kernel incorrectly
handled setattr operations. A local unprivileged attacker could use this to
create files with administrative permission attributes and execute
arbitrary code with elevated privileges.
Update instructions
The problem can be corrected by updating your system to the following
package version:
- Ubuntu 14.04 LTS:
-
linux-image-4.2.0-23-powerpc64-emb
4.2.0-23.28~14.04.1
-
linux-image-4.2.0-23-lowlatency
4.2.0-23.28~14.04.1
-
linux-image-4.2.0-23-powerpc64-smp
4.2.0-23.28~14.04.1
-
linux-image-4.2.0-23-generic
4.2.0-23.28~14.04.1
-
linux-image-4.2.0-23-powerpc-smp
4.2.0-23.28~14.04.1
-
linux-image-4.2.0-23-generic-lpae
4.2.0-23.28~14.04.1
-
linux-image-4.2.0-23-powerpc-e500mc
4.2.0-23.28~14.04.1
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-2858-3: Linux kernel (Raspberry Pi 2) vulnerability
Ubuntu Security Notice USN-2858-3
5th January, 2016
linux-raspi2 vulnerability
A security issue affects these releases of Ubuntu and its
derivatives:
- Ubuntu 15.10
Summary
The system could be made to run programs as an administrator.
Software description
- linux-raspi2
– Linux kernel for Raspberry Pi 2
Details
Nathan Williams discovered that overlayfs in the Linux kernel incorrectly
handled setattr operations. A local unprivileged attacker could use this to
create files with administrative permission attributes and execute
arbitrary code with elevated privileges.
Update instructions
The problem can be corrected by updating your system to the following
package version:
- Ubuntu 15.10:
-
linux-image-4.2.0-1018-raspi2
4.2.0-1018.25
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
Ubuntu Security Notice USN-2858-3
Ubuntu Security Notice 2858-3 – Nathan Williams discovered that overlayfs in the Linux kernel incorrectly handled setattr operations. A local unprivileged attacker could use this to create files with administrative permission attributes and execute arbitrary code with elevated privileges.