CVE-2009-0036 — Buffer overflow in the proxyReadClientSocket function in proxy/libvirt_proxy

Buffer overflow in the proxyReadClientSocket function in proxy/libvirt_proxy.c in libvirt_proxy 0.5.1 might allow local users to gain privileges by sending a portion of the header of a virProxyPacket packet, and then sending the remainder of the packet with crafted values in the

01What is this vulnerability?

Buffer overflow in the proxyReadClientSocket function in proxy/libvirt_proxy.c in libvirt_proxy 0.5.1 might allow local users to gain privileges by sending a portion of the header of a virProxyPacket packet, and then sending the remainder of the packet with crafted values in the header, related to use of uninitialized memory in a validation check.

02Affected products

Vendor	Product	Versions
n	a / n/a	n/a

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection in your stack of choice:

Open in Sigma generator →

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2009-02-11T20:00:00.000Z
• Last modified: 2024-08-07T04:17:10.440Z

09References

• oval.cisecurity.org — https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3…
• www.redhat.com — https://www.redhat.com/archives/libvir-list/2009-January/msg00728.html
• www.redhat.com — https://www.redhat.com/archives/libvir-list/2009-January/msg00726.html
• www.securityfocus.com — http://www.securityfocus.com/bid/33724
• www.redhat.com — https://www.redhat.com/archives/libvir-list/2009-January/msg00699.html
• bugzilla.redhat.com — https://bugzilla.redhat.com/show_bug.cgi?id=484947
• www.redhat.com — http://www.redhat.com/support/errata/RHSA-2009-0382.html
• git.et.redhat.com — http://git.et.redhat.com/?p=libvirt.git%3Ba=commitdiff%3Bh=2bb0657e28
• openwall.com — http://openwall.com/lists/oss-security/2009/02/10/8
• secunia.com — http://secunia.com/advisories/34397