#VU43303 Input validation error in Xen - CVE-2012-6035

Vulnerability identifier: #VU43303

Vulnerability risk: High

CVSSv4.0: 6.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2012-6035

CWE-ID: CWE-20

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Xen
Server applications / Virtualization software

Vendor: Xen Project

Description

The vulnerability allows local guest OS users to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can cause a denial of service (memory corruption and host crash) or execute arbitrary code via unspecified vectors.

Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

Xen: 4.0.0 - 4.2.0

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External links
https://lists.xen.org/archives/html/xen-announce/2012-09/msg00006.html
https://osvdb.org/85199
https://secunia.com/advisories/50472
https://secunia.com/advisories/55082
https://security.gentoo.org/glsa/glsa-201309-24.xml
https://wiki.xen.org/wiki/Security_Announcements#XSA-15_multiple_TMEM_hypercall_vulnerabilities
https://www.openwall.com/lists/oss-security/2012/09/05/8
https://www.securityfocus.com/bid/55410
https://www.securitytracker.com/id?1027482
https://exchange.xforce.ibmcloud.com/vulnerabilities/78268
https://security.gentoo.org/glsa/201604-03

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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.