USN-2583-1: Linux kernel vulnerability

Published Apr 30, 2015
·
Updated

A race condition between chown() and execve() was discovered in the Linux kernel. A local attacker could exploit this race by using chown on a setuid-user-binary to gain administrative privileges.

Affected Software

28 affected componentsFixes available
All of the following
ubuntu/linux-image-2.6.32-74-powerpc<2.6.32-74.142
2.6.32-74.142
Ubuntu Ubuntu=10.04
All of the following
ubuntu/linux-image-2.6.32-74-386<2.6.32-74.142
2.6.32-74.142
Ubuntu Ubuntu=10.04
All of the following
ubuntu/linux-image-2.6.32-74-sparc64<2.6.32-74.142
2.6.32-74.142
Ubuntu Ubuntu=10.04
All of the following
ubuntu/linux-image-2.6.32-74-generic-pae<2.6.32-74.142
2.6.32-74.142
Ubuntu Ubuntu=10.04
All of the following
ubuntu/linux-image-2.6.32-74-preempt<2.6.32-74.142
2.6.32-74.142
Ubuntu Ubuntu=10.04
All of the following
ubuntu/linux-image-2.6.32-74-lpia<2.6.32-74.142
2.6.32-74.142
Ubuntu Ubuntu=10.04
All of the following
ubuntu/linux-image-2.6.32-74-sparc64-smp<2.6.32-74.142
2.6.32-74.142
Ubuntu Ubuntu=10.04
All of the following
ubuntu/linux-image-2.6.32-74-powerpc64-smp<2.6.32-74.142
2.6.32-74.142
Ubuntu Ubuntu=10.04
All of the following
ubuntu/linux-image-2.6.32-74-versatile<2.6.32-74.142
2.6.32-74.142
Ubuntu Ubuntu=10.04
All of the following
ubuntu/linux-image-2.6.32-74-generic<2.6.32-74.142
2.6.32-74.142
Ubuntu Ubuntu=10.04
All of the following
ubuntu/linux-image-2.6.32-74-ia64<2.6.32-74.142
2.6.32-74.142
Ubuntu Ubuntu=10.04
All of the following
ubuntu/linux-image-2.6.32-74-server<2.6.32-74.142
2.6.32-74.142
Ubuntu Ubuntu=10.04
All of the following
ubuntu/linux-image-2.6.32-74-powerpc-smp<2.6.32-74.142
2.6.32-74.142
Ubuntu Ubuntu=10.04
All of the following
ubuntu/linux-image-2.6.32-74-virtual<2.6.32-74.142
2.6.32-74.142
Ubuntu Ubuntu=10.04

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade ubuntu/linux-image-2.6.32-74-powerpc to a version that resolves this vulnerability.

    Fixed in 2.6.32-74.142
  2. Upgrade

    Upgrade ubuntu/linux-image-2.6.32-74-386 to a version that resolves this vulnerability.

    Fixed in 2.6.32-74.142
  3. Upgrade

    Upgrade ubuntu/linux-image-2.6.32-74-sparc64 to a version that resolves this vulnerability.

    Fixed in 2.6.32-74.142
  4. Upgrade

    Upgrade ubuntu/linux-image-2.6.32-74-generic-pae to a version that resolves this vulnerability.

    Fixed in 2.6.32-74.142
  5. Upgrade

    Upgrade ubuntu/linux-image-2.6.32-74-preempt to a version that resolves this vulnerability.

    Fixed in 2.6.32-74.142
  6. Upgrade

    Upgrade ubuntu/linux-image-2.6.32-74-lpia to a version that resolves this vulnerability.

    Fixed in 2.6.32-74.142
  7. Upgrade

    Upgrade ubuntu/linux-image-2.6.32-74-sparc64-smp to a version that resolves this vulnerability.

    Fixed in 2.6.32-74.142
  8. Upgrade

    Upgrade ubuntu/linux-image-2.6.32-74-powerpc64-smp to a version that resolves this vulnerability.

    Fixed in 2.6.32-74.142
  9. Upgrade

    Upgrade ubuntu/linux-image-2.6.32-74-versatile to a version that resolves this vulnerability.

    Fixed in 2.6.32-74.142
  10. Upgrade

    Upgrade ubuntu/linux-image-2.6.32-74-generic to a version that resolves this vulnerability.

    Fixed in 2.6.32-74.142
  11. Upgrade

    Upgrade ubuntu/linux-image-2.6.32-74-ia64 to a version that resolves this vulnerability.

    Fixed in 2.6.32-74.142
  12. Upgrade

    Upgrade ubuntu/linux-image-2.6.32-74-server to a version that resolves this vulnerability.

    Fixed in 2.6.32-74.142
  13. Upgrade

    Upgrade ubuntu/linux-image-2.6.32-74-powerpc-smp to a version that resolves this vulnerability.

    Fixed in 2.6.32-74.142
  14. Upgrade

    Upgrade ubuntu/linux-image-2.6.32-74-virtual to a version that resolves this vulnerability.

    Fixed in 2.6.32-74.142

Event History

Apr 30, 2015
Advisory Published
via Ubuntu·12:00 AM

Child vulnerabilities

Contains the following vulnerabilities.

Frequently Asked Questions

1

What is the severity of USN-2583-1?

USN-2583-1 has a high severity due to the potential for local attackers to gain administrative privileges.

2

How do I fix USN-2583-1?

To fix USN-2583-1, you should upgrade to the linux-image package version 2.6.32-74.142 or later.

3

Which systems are affected by USN-2583-1?

USN-2583-1 affects Ubuntu 10.04 systems running specific linux-image packages.

4

What does the vulnerability in USN-2583-1 allow an attacker to do?

The vulnerability allows a local attacker to exploit a race condition to gain administrative privileges.

5

Is there a workaround for USN-2583-1?

There is no specific workaround; the recommended action is to apply the security update.

Company

Resources

Contact

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