Monthly Archives: June 2015

Ubuntu

USN-2634-1: Linux kernel vulnerabilities

Ubuntu Security Notice USN-2634-1

10th June, 2015

linux vulnerabilities

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

  • Ubuntu 14.04 LTS

Summary

Several security issues were fixed in the kernel.

Software description

  • linux
    – Linux kernel

Details

Wen Xu discovered a use-after-free flaw in the Linux kernel’s ipv4 ping
support. A local user could exploit this flaw to cause a denial of service
(system crash) or gain administrative privileges on the system.
(CVE-2015-3636)

A memory corruption flaw was discovered in the Linux kernel’s scsi
subsystem. A local attacker could potentially exploit this flaw to cause a
denial of service (system crash). (CVE-2015-4036)

Update instructions

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

Ubuntu 14.04 LTS:
linux-image-3.13.0-54-generic-lpae

3.13.0-54.91
linux-image-3.13.0-54-powerpc-e500mc

3.13.0-54.91
linux-image-3.13.0-54-lowlatency

3.13.0-54.91
linux-image-3.13.0-54-powerpc-smp

3.13.0-54.91
linux-image-3.13.0-54-powerpc64-emb

3.13.0-54.91
linux-image-3.13.0-54-generic

3.13.0-54.91
linux-image-3.13.0-54-powerpc64-smp

3.13.0-54.91
linux-image-3.13.0-54-powerpc-e500

3.13.0-54.91

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. If
you use linux-restricted-modules, you have to update that package as
well to get modules which work with the new kernel version. Unless you
manually uninstalled the standard kernel metapackages (e.g. linux-generic,
linux-server, linux-powerpc), a standard system upgrade will automatically
perform this as well.

References

CVE-2015-3636,

CVE-2015-4036

Ubuntu

USN-2635-1: Linux kernel (Utopic HWE) vulnerabilities

Ubuntu Security Notice USN-2635-1

10th June, 2015

linux-lts-utopic vulnerabilities

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

  • Ubuntu 14.04 LTS

Summary

Several security issues were fixed in the kernel.

Software description

  • linux-lts-utopic
    – Linux hardware enablement kernel from Utopic

Details

Xiong Zhou discovered a bug in the way the EXT4 filesystem handles
fallocate zero range functionality when the page size is greater than the
block size. A local attacker could exploit this flaw to cause a denial of
service (system crash). (CVE-2015-0275)

Wen Xu discovered a use-after-free flaw in the Linux kernel’s ipv4 ping
support. A local user could exploit this flaw to cause a denial of service
(system crash) or gain administrative privileges on the system.
(CVE-2015-3636)

Update instructions

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

Ubuntu 14.04 LTS:
linux-image-3.16.0-39-generic

3.16.0-39.53~14.04.1
linux-image-3.16.0-39-powerpc64-smp

3.16.0-39.53~14.04.1
linux-image-3.16.0-39-lowlatency

3.16.0-39.53~14.04.1
linux-image-3.16.0-39-powerpc-smp

3.16.0-39.53~14.04.1
linux-image-3.16.0-39-powerpc-e500mc

3.16.0-39.53~14.04.1
linux-image-3.16.0-39-generic-lpae

3.16.0-39.53~14.04.1
linux-image-3.16.0-39-powerpc64-emb

3.16.0-39.53~14.04.1

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. If
you use linux-restricted-modules, you have to update that package as
well to get modules which work with the new kernel version. Unless you
manually uninstalled the standard kernel metapackages (e.g. linux-generic,
linux-server, linux-powerpc), a standard system upgrade will automatically
perform this as well.

References

CVE-2015-0275,

CVE-2015-3636

Ubuntu

USN-2636-1: Linux kernel (Vivid HWE) vulnerabilities

Ubuntu Security Notice USN-2636-1

10th June, 2015

linux-lts-vivid vulnerabilities

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

  • Ubuntu 14.04 LTS

Summary

Several security issues were fixed in the kernel.

Software description

  • linux-lts-vivid
    – Linux hardware enablement kernel from Vivid

Details

Xiong Zhou discovered a bug in the way the EXT4 filesystem handles
fallocate zero range functionality when the page size is greater than the
block size. A local attacker could exploit this flaw to cause a denial of
service (system crash). (CVE-2015-0275)

Wen Xu discovered a use-after-free flaw in the Linux kernel’s ipv4 ping
support. A local user could exploit this flaw to cause a denial of service
(system crash) or gain administrative privileges on the system.
(CVE-2015-3636)

A memory corruption flaw was discovered in the Linux kernel’s scsi
subsystem. A local attacker could potentially exploit this flaw to cause a
denial of service (system crash). (CVE-2015-4036)

Update instructions

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

Ubuntu 14.04 LTS:
linux-image-3.19.0-20-powerpc-smp

3.19.0-20.20~14.04.1
linux-image-3.19.0-20-powerpc-e500mc

3.19.0-20.20~14.04.1
linux-image-3.19.0-20-generic-lpae

3.19.0-20.20~14.04.1
linux-image-3.19.0-20-generic

3.19.0-20.20~14.04.1
linux-image-3.19.0-20-powerpc64-smp

3.19.0-20.20~14.04.1
linux-image-3.19.0-20-lowlatency

3.19.0-20.20~14.04.1
linux-image-3.19.0-20-powerpc64-emb

3.19.0-20.20~14.04.1

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. If
you use linux-restricted-modules, you have to update that package as
well to get modules which work with the new kernel version. Unless you
manually uninstalled the standard kernel metapackages (e.g. linux-generic,
linux-server, linux-powerpc), a standard system upgrade will automatically
perform this as well.

References

CVE-2015-0275,

CVE-2015-3636,

CVE-2015-4036

Ubuntu

USN-2637-1: Linux kernel vulnerabilities

Ubuntu Security Notice USN-2637-1

10th June, 2015

linux vulnerabilities

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

  • Ubuntu 14.10

Summary

Several security issues were fixed in the kernel.

Software description

  • linux
    – Linux kernel

Details

Xiong Zhou discovered a bug in the way the EXT4 filesystem handles
fallocate zero range functionality when the page size is greater than the
block size. A local attacker could exploit this flaw to cause a denial of
service (system crash). (CVE-2015-0275)

Wen Xu discovered a use-after-free flaw in the Linux kernel’s ipv4 ping
support. A local user could exploit this flaw to cause a denial of service
(system crash) or gain administrative privileges on the system.
(CVE-2015-3636)

Update instructions

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

Ubuntu 14.10:
linux-image-3.16.0-39-generic

3.16.0-39.53
linux-image-3.16.0-39-powerpc64-smp

3.16.0-39.53
linux-image-3.16.0-39-lowlatency

3.16.0-39.53
linux-image-3.16.0-39-powerpc-smp

3.16.0-39.53
linux-image-3.16.0-39-powerpc-e500mc

3.16.0-39.53
linux-image-3.16.0-39-generic-lpae

3.16.0-39.53
linux-image-3.16.0-39-powerpc64-emb

3.16.0-39.53

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. If
you use linux-restricted-modules, you have to update that package as
well to get modules which work with the new kernel version. Unless you
manually uninstalled the standard kernel metapackages (e.g. linux-generic,
linux-server, linux-powerpc), a standard system upgrade will automatically
perform this as well.

References

CVE-2015-0275,

CVE-2015-3636

Ubuntu

USN-2638-1: Linux kernel vulnerabilities

Ubuntu Security Notice USN-2638-1

10th June, 2015

linux vulnerabilities

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

  • Ubuntu 15.04

Summary

Several security issues were fixed in the kernel.

Software description

  • linux
    – Linux kernel

Details

Xiong Zhou discovered a bug in the way the EXT4 filesystem handles
fallocate zero range functionality when the page size is greater than the
block size. A local attacker could exploit this flaw to cause a denial of
service (system crash). (CVE-2015-0275)

Wen Xu discovered a use-after-free flaw in the Linux kernel’s ipv4 ping
support. A local user could exploit this flaw to cause a denial of service
(system crash) or gain administrative privileges on the system.
(CVE-2015-3636)

A memory corruption flaw was discovered in the Linux kernel’s scsi
subsystem. A local attacker could potentially exploit this flaw to cause a
denial of service (system crash). (CVE-2015-4036)

Update instructions

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

Ubuntu 15.04:
linux-image-3.19.0-20-powerpc-smp

3.19.0-20.20
linux-image-3.19.0-20-powerpc-e500mc

3.19.0-20.20
linux-image-3.19.0-20-generic-lpae

3.19.0-20.20
linux-image-3.19.0-20-generic

3.19.0-20.20
linux-image-3.19.0-20-powerpc64-smp

3.19.0-20.20
linux-image-3.19.0-20-lowlatency

3.19.0-20.20
linux-image-3.19.0-20-powerpc64-emb

3.19.0-20.20

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. If
you use linux-restricted-modules, you have to update that package as
well to get modules which work with the new kernel version. Unless you
manually uninstalled the standard kernel metapackages (e.g. linux-generic,
linux-server, linux-powerpc), a standard system upgrade will automatically
perform this as well.

References

CVE-2015-0275,

CVE-2015-3636,

CVE-2015-4036

Security

Libmimedir VCF Memory Corruption Proof Of Concept

Libmimedir suffers from a memory corruption vulnerability. Adding two NULL bytes to the end of a VCF file allows a user to manipulate free() calls which occur during it’s lexer’s memory clean-up procedure. This could lead to exploitable conditions such as crafting a specific memory chunk to allow for arbitrary code execution.

Security

Heroku Session Validation Issue

An application-side re-auth session bypass vulnerability has been discovered in the official Heroku API and web-application service. The vulnerability allows an attacker to request unauthorized information without the second forced re-authentication module.