Resource management error in Xen

1) Resource management error

EUVDB-ID: #VU32757

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-2012-3433

CWE-ID: CWE-399 - Resource Management Errors

Exploit availability: No

Description

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

Xen 4.0 and 4.1 allows local HVM guest OS kernels to cause a denial of service (domain 0 VCPU hang and kernel panic) by modifying the physical address space in a way that triggers excessive shared page search time during the p2m teardown.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Xen: 4.24

CPE2.3

• cpe:2.3:a:xen_project:xen:4.24:*:*:*:*:*:*:*

External links

https://lists.opensuse.org/opensuse-security-announce/2012-08/msg00024.html
https://lists.opensuse.org/opensuse-security-announce/2012-08/msg00025.html
https://lists.opensuse.org/opensuse-security-announce/2012-09/msg00017.html
https://lists.opensuse.org/opensuse-security-announce/2012-09/msg00018.html
https://lists.xen.org/archives/html/xen-devel/2012-08/msg00855.html
https://secunia.com/advisories/55082
https://security.gentoo.org/glsa/glsa-201309-24.xml
https://www.debian.org/security/2012/dsa-2531
https://www.openwall.com/lists/oss-security/2012/08/09/3
https://www.securityfocus.com/bid/54942

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.