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CVE-2013-1796

6.8 · MEDIUM

The kvm_set_msr_common function in arch/x86/kvm/x86.c in the Linux kernel through 3.8.4 does not ensure a required time_page alignment during an MSR_KVM_SYSTEM_TIME operation, which allows guest OS…

Published Mar 22, 2013linuxCWE-119EPSS 0.95%

Overview

CVE-2013-1796 is a medium-severity vulnerability affecting linux linux_kernel. It was published on March 22, 2013 and has a CVSS 2.0 base score of 6.8 (MEDIUM).

This vulnerability has a CVSS 2.0 base score of 6.8, rated MEDIUM. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

The kvm_set_msr_common function in arch/x86/kvm/x86.c in the Linux kernel through 3.8.4 does not ensure a required time_page alignment during an MSR_KVM_SYSTEM_TIME operation, which allows guest OS users to cause a denial of service (buffer overflow and host OS memory corruption) or possibly have unspecified other impact via a crafted application.

Remediation

Check the references section for vendor advisories and patches from linux. Update linux_kernel to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
linuxlinux_kernel0Affected

References

Refgit.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=c300aa64ddf57d9c5d9c898a64b36877345dd4a9Reflists.opensuse.org/opensuse-security-announce/2013-05/msg00018.htmlReflists.opensuse.org/opensuse-security-announce/2013-06/msg00005.htmlReflists.opensuse.org/opensuse-security-announce/2013-07/msg00018.htmlRefrhn.redhat.com/errata/RHSA-2013-0727.htmlRefrhn.redhat.com/errata/RHSA-2013-0744.htmlRefrhn.redhat.com/errata/RHSA-2013-0746.htmlRefrhn.redhat.com/errata/RHSA-2013-0928.htmlRefrhn.redhat.com/errata/RHSA-2013-1026.htmlRefwww.mandriva.com/security/advisories?name=MDVSA-2013:176

How CyberStrike helps

Frequently asked questions

What is CVE-2013-1796?

CVE-2013-1796 is a medium-severity vulnerability affecting linux linux_kernel. It was published on March 22, 2013 and has a CVSS 2.0 base score of 6.8 (MEDIUM).

How severe is CVE-2013-1796?

This vulnerability has a CVSS 2.0 base score of 6.8, rated MEDIUM. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2013-1796?

Check the references section for vendor advisories and patches from linux. Update linux_kernel to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2013-1796?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2013-1796 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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