#VU43760 Resource management error in libvirt - CVE-2012-3445

Vulnerability identifier: #VU43760

Vulnerability risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2012-3445

CWE-ID: CWE-399

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
libvirt
Universal components / Libraries / Libraries used by multiple products

Vendor: libvirt.org

Description

The vulnerability allows a remote #AU# to perform service disruption.

The virTypedParameterArrayClear function in libvirt 0.9.13 does not properly handle virDomain* API calls with typed parameters, which might allow remote authenticated users to cause a denial of service (libvirtd crash) via an RPC command with nparams set to zero, which triggers an out-of-bounds read or a free of an invalid pointer.

Mitigation
Install update from vendor's website.

Vulnerable software versions

libvirt: 0.9.13

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External links
https://lists.opensuse.org/opensuse-updates/2012-08/msg00023.html
https://rhn.redhat.com/errata/RHSA-2012-1202.html
https://secunia.com/advisories/50118
https://secunia.com/advisories/50299
https://secunia.com/advisories/50372
https://www.openwall.com/lists/oss-security/2012/07/31/4
https://www.openwall.com/lists/oss-security/2012/07/31/7
https://www.securityfocus.com/bid/54748
https://bugzilla.redhat.com/show_bug.cgi?id=844734
https://www.redhat.com/archives/libvir-list/2012-July/msg01650.html

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.