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CVE-2011-1011

6.9 · MEDIUM

The seunshare_mount function in sandbox/seunshare.c in seunshare in certain Red Hat packages of policycoreutils 2.0.83 and earlier in Red Hat Enterprise Linux (RHEL) 6 and earlier, and Fedora 14 an…

Published Feb 24, 2011redhatCWE-264EPSS 0.37%

Overview

CVE-2011-1011 is a medium-severity vulnerability affecting redhat policycoreutils. It was published on February 24, 2011 and has a CVSS 2.0 base score of 6.9 (MEDIUM).

This vulnerability has a CVSS 2.0 base score of 6.9, rated MEDIUM. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

The seunshare_mount function in sandbox/seunshare.c in seunshare in certain Red Hat packages of policycoreutils 2.0.83 and earlier in Red Hat Enterprise Linux (RHEL) 6 and earlier, and Fedora 14 and earlier, mounts a new directory on top of /tmp without assigning root ownership and the sticky bit to this new directory, which allows local users to replace or delete arbitrary /tmp files, and consequently cause a denial of service or possibly gain privileges, by running a setuid application that relies on /tmp, as demonstrated by the ksu application.

Remediation

Check the references section for vendor advisories and patches from redhat. Update policycoreutils 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
redhatpolicycoreutils0Affected

References

Refarchives.neohapsis.com/archives/fulldisclosure/2011-02/0585.htmlReflists.fedoraproject.org/pipermail/package-announce/2011-March/056227.htmlRefopenwall.com/lists/oss-security/2011/02/23/1Refopenwall.com/lists/oss-security/2011/02/23/2Refpkgs.fedoraproject.org/gitweb/?p=policycoreutils.git%3Ba=blob%3Bf=policycoreutils-rhat.patch%3Bh=d4db5bc06027de23d12a4b3f18fa6f9b1517df27%3Bhb=HEAD#l2197Refsecunia.com/advisories/43415Refsecunia.com/advisories/43844Refsecunia.com/advisories/44034Refwww.redhat.com/support/errata/RHSA-2011-0414.htmlRefwww.securityfocus.com/bid/46510

How CyberStrike helps

Frequently asked questions

What is CVE-2011-1011?

CVE-2011-1011 is a medium-severity vulnerability affecting redhat policycoreutils. It was published on February 24, 2011 and has a CVSS 2.0 base score of 6.9 (MEDIUM).

How severe is CVE-2011-1011?

This vulnerability has a CVSS 2.0 base score of 6.9, 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-2011-1011?

Check the references section for vendor advisories and patches from redhat. Update policycoreutils 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-2011-1011?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2011-1011 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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