#VU32663 Input validation error in Xen - CVE-2013-2078

Vulnerability identifier: #VU32663

Vulnerability risk: Low

CVSSv4.0: 4.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2013-2078

CWE-ID: CWE-20

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Xen
Server applications / Virtualization software

Vendor: Xen Project

Description

The vulnerability allows a local non-authenticated attacker to perform a denial of service (DoS) attack.

Xen 4.0.2 through 4.0.4, 4.1.x, and 4.2.x allows local PV guest users to cause a denial of service (hypervisor crash) via certain bit combinations to the XSETBV instruction.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Xen: 4.0.2 - 4.0.4

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External links
https://secunia.com/advisories/55082
https://security.gentoo.org/glsa/glsa-201309-24.xml
https://www.debian.org/security/2014/dsa-3006
https://www.openwall.com/lists/oss-security/2013/06/03/3
https://www.securitytracker.com/id/1028613

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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