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CVE-2012-6036

4.4 · MEDIUM

The (1) memc_save_get_next_page, (2) tmemc_restore_put_page and (3) tmemc_restore_flush_page functions in the Transcendent Memory (TMEM) in Xen 4.0, 4.1, and 4.2 do not check for negative id pools,…

Published Nov 23, 2012xenCWE-264EPSS 0.43%

Overview

CVE-2012-6036 is a medium-severity vulnerability affecting xen xen. It was published on November 23, 2012 and has a CVSS 2.0 base score of 4.4 (MEDIUM).

This vulnerability has a CVSS 2.0 base score of 4.4, rated MEDIUM. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

The (1) memc_save_get_next_page, (2) tmemc_restore_put_page and (3) tmemc_restore_flush_page functions in the Transcendent Memory (TMEM) in Xen 4.0, 4.1, and 4.2 do not check for negative id pools, which allows local guest OS users to cause a denial of service (memory corruption and host crash) or possibly execute arbitrary code via unspecified vectors. NOTE: this issue was originally published as part of CVE-2012-3497, which was too general; CVE-2012-3497 has been SPLIT into this ID and others.

Remediation

Check the references section for vendor advisories and patches from xen. Update xen to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus

References

Reflists.xen.org/archives/html/xen-announce/2012-09/msg00006.htmlRefosvdb.org/85199Refsecunia.com/advisories/50472Refsecunia.com/advisories/55082Refsecurity.gentoo.org/glsa/glsa-201309-24.xmlRefwiki.xen.org/wiki/Security_Announcements#XSA-15_multiple_TMEM_hypercall_vulnerabilitiesRefwww.openwall.com/lists/oss-security/2012/09/05/8Refwww.securityfocus.com/bid/55410Refwww.securitytracker.com/id?1027482Refexchange.xforce.ibmcloud.com/vulnerabilities/78268

How CyberStrike helps

Frequently asked questions

What is CVE-2012-6036?

CVE-2012-6036 is a medium-severity vulnerability affecting xen xen. It was published on November 23, 2012 and has a CVSS 2.0 base score of 4.4 (MEDIUM).

How severe is CVE-2012-6036?

This vulnerability has a CVSS 2.0 base score of 4.4, rated MEDIUM. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2012-6036?

Check the references section for vendor advisories and patches from xen. Update xen to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2012-6036?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2012-6036 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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