medium
6.9
CWE
20
Advisory Published
Updated

CVE-2012-5513: Input Validation

First published: Thu Dec 13 2012(Updated: )

The XENMEM_exchange handler in Xen 4.2 and earlier does not properly check the memory address, which allows local PV guest OS administrators to cause a denial of service (crash) or possibly gain privileges via unspecified vectors that overwrite memory in the hypervisor reserved range.

Credit: secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
Xen xen-unstable<=4.2.0
Xen xen-unstable=3.0.2
Xen xen-unstable=3.0.3
Xen xen-unstable=3.0.4
Xen xen-unstable=3.1.3
Xen xen-unstable=3.1.4
Xen xen-unstable=3.2.0
Xen xen-unstable=3.2.1
Xen xen-unstable=3.2.2
Xen xen-unstable=3.2.3
Xen xen-unstable=3.3.0
Xen xen-unstable=3.3.1
Xen xen-unstable=3.3.2
Xen xen-unstable=3.4.0
Xen xen-unstable=3.4.1
Xen xen-unstable=3.4.2
Xen xen-unstable=3.4.3
Xen xen-unstable=3.4.4
Xen xen-unstable=4.0.0
Xen xen-unstable=4.0.1
Xen xen-unstable=4.0.2
Xen xen-unstable=4.0.3
Xen xen-unstable=4.0.4
Xen xen-unstable=4.1.0
Xen xen-unstable=4.1.1
Xen xen-unstable=4.1.2
Xen xen-unstable=4.1.3

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2012-5513?

    CVE-2012-5513 is classified as a high severity vulnerability due to its potential to cause a denial of service or privilege escalation.

  • How do I fix CVE-2012-5513?

    To fix CVE-2012-5513, update your Xen hypervisor to a version later than 4.2.0.

  • What versions of Xen are affected by CVE-2012-5513?

    CVE-2012-5513 affects Xen versions 4.2.0 and earlier, along with specific versions ranging from 3.0.2 to 4.1.3.

  • What is the impact of CVE-2012-5513 on local PV guest OS administrators?

    Local PV guest OS administrators can exploit CVE-2012-5513 to crash the system or potentially gain unauthorized privileges.

  • Is there a workaround for CVE-2012-5513 if an upgrade is not possible?

    Currently, there are no effective workarounds for CVE-2012-5513 other than upgrading to a patched version of Xen.

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