medium
4.9
CWE
20
Advisory Published
Updated

CVE-2013-6833: Input Validation

First published: Thu Nov 21 2013(Updated: )

The qls_eioctl function in sys/dev/qlxge/qls_ioctl.c in the kernel in FreeBSD 10 and earlier does not validate a certain size parameter, which allows local users to obtain sensitive information from kernel memory via a crafted ioctl call.

Credit: cve@mitre.org

Affected SoftwareAffected VersionHow to fix
FreeBSD Kernel<=10.0
FreeBSD Kernel=0.4_1
FreeBSD Kernel=1.0
FreeBSD Kernel=1.1
FreeBSD Kernel=1.1.5
FreeBSD Kernel=1.1.5.1
FreeBSD Kernel=1.2
FreeBSD Kernel=1.5
FreeBSD Kernel=2.0
FreeBSD Kernel=2.0.1
FreeBSD Kernel=2.0.5
FreeBSD Kernel=2.1
FreeBSD Kernel=2.1.0
FreeBSD Kernel=2.1.5
FreeBSD Kernel=2.1.6
FreeBSD Kernel=2.1.6.1
FreeBSD Kernel=2.1.7
FreeBSD Kernel=2.1.7.1
FreeBSD Kernel=2.2
FreeBSD Kernel=2.2.1
FreeBSD Kernel=2.2.2
FreeBSD Kernel=2.2.3
FreeBSD Kernel=2.2.4
FreeBSD Kernel=2.2.5
FreeBSD Kernel=2.2.6
FreeBSD Kernel=2.2.7
FreeBSD Kernel=2.2.8
FreeBSD Kernel=3.0
FreeBSD Kernel=3.1
FreeBSD Kernel=3.2
FreeBSD Kernel=3.3
FreeBSD Kernel=3.4
FreeBSD Kernel=3.5
FreeBSD Kernel=3.5.1
FreeBSD Kernel=4.0
FreeBSD Kernel=4.1
FreeBSD Kernel=4.1.1
FreeBSD Kernel=4.2
FreeBSD Kernel=4.3
FreeBSD Kernel=4.4
FreeBSD Kernel=4.5
FreeBSD Kernel=4.6
FreeBSD Kernel=4.6.2
FreeBSD Kernel=4.7
FreeBSD Kernel=4.8
FreeBSD Kernel=4.9
FreeBSD Kernel=4.10
FreeBSD Kernel=4.11
FreeBSD Kernel=5.0
FreeBSD Kernel=5.1
FreeBSD Kernel=5.2
FreeBSD Kernel=5.2.1
FreeBSD Kernel=5.3
FreeBSD Kernel=5.4
FreeBSD Kernel=5.5
FreeBSD Kernel=6.0
FreeBSD Kernel=6.1
FreeBSD Kernel=6.2
FreeBSD Kernel=6.3
FreeBSD Kernel=6.4
FreeBSD Kernel=7.0
FreeBSD Kernel=7.1
FreeBSD Kernel=7.2
FreeBSD Kernel=7.3
FreeBSD Kernel=7.4
FreeBSD Kernel=8.0
FreeBSD Kernel=8.1
FreeBSD Kernel=8.2
FreeBSD Kernel=8.3
FreeBSD Kernel=8.4
FreeBSD Kernel=9.0
FreeBSD Kernel=9.1
FreeBSD Kernel=9.2

Remedy

http://archives.neohapsis.com/archives/fulldisclosure/2013-11/0107.html

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2013-6833?

    CVE-2013-6833 is considered a medium severity vulnerability due to its potential to expose sensitive information from kernel memory.

  • How can I fix CVE-2013-6833?

    To fix CVE-2013-6833, apply the latest security patches provided by FreeBSD that address this ioctl parameter validation issue.

  • Who is affected by CVE-2013-6833?

    CVE-2013-6833 affects FreeBSD 10 and earlier versions, allowing local users to exploit it.

  • What type of attack does CVE-2013-6833 enable?

    CVE-2013-6833 enables a local privilege escalation attack that can lead to the disclosure of sensitive kernel memory.

  • Is there a workaround for CVE-2013-6833?

    Currently, the best practice is to update to a supported version of FreeBSD that has patched CVE-2013-6833.

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