Buffer overflow in Linux kernel - CVE-2013-1796

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Main Vulnerability Database Vulnerabilities #VU42964

Buffer overflow in Linux kernel - CVE-2013-1796

Published: March 22, 2013 / Updated: August 11, 2020


Vulnerability identifier: #VU42964
CSH Severity: Medium
CVSS v4: 7.7 [CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2013-1796
CWE-ID: CWE-119
Exploitation vector: Adjecent network
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.

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.


Affected software

Linux kernel
Ubuntu
linux (Ubuntu package)
linux-image-2.6.32-351-ec2 (Ubuntu package)
linux-lts-quantal (Ubuntu package)

How to mitigate CVE-2013-1796

Install update from vendor's website.

linux (Ubuntu package) - addressed in versions 2.6.32-46.108, 3.2.0-41.66, 3.5.0-28.48
linux-image-2.6.32-351-ec2 (Ubuntu package) - update to 2.6.32-351.64
linux-lts-quantal (Ubuntu package) - update to 3.5.0-28.48~precise1

External References

Related Security Bulletins