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CVE-2011-1089

3.3 · LOW

The addmntent function in the GNU C Library (aka glibc or libc6) 2.13 and earlier does not report an error status for failed attempts to write to the /etc/mtab file, which makes it easier for local…

Published Apr 10, 2011gnuCWE-16EPSS 0.42%

Overview

CVE-2011-1089 is a low-severity vulnerability affecting gnu glibc. It was published on April 10, 2011 and has a CVSS 2.0 base score of 3.3 (LOW).

This vulnerability has a CVSS 2.0 base score of 3.3, rated LOW. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

The addmntent function in the GNU C Library (aka glibc or libc6) 2.13 and earlier does not report an error status for failed attempts to write to the /etc/mtab file, which makes it easier for local users to trigger corruption of this file, as demonstrated by writes from a process with a small RLIMIT_FSIZE value, a different vulnerability than CVE-2010-0296.

Remediation

Check the references section for vendor advisories and patches from gnu. Update glibc 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
gnuglibc0Affected

References

Refopenwall.com/lists/oss-security/2011/03/04/10Refopenwall.com/lists/oss-security/2011/03/04/11Refopenwall.com/lists/oss-security/2011/03/04/12Refopenwall.com/lists/oss-security/2011/03/04/9Refopenwall.com/lists/oss-security/2011/03/05/3Refopenwall.com/lists/oss-security/2011/03/05/7Refopenwall.com/lists/oss-security/2011/03/07/9Refopenwall.com/lists/oss-security/2011/03/14/16Refopenwall.com/lists/oss-security/2011/03/14/5Refopenwall.com/lists/oss-security/2011/03/14/7

How CyberStrike helps

Frequently asked questions

What is CVE-2011-1089?

CVE-2011-1089 is a low-severity vulnerability affecting gnu glibc. It was published on April 10, 2011 and has a CVSS 2.0 base score of 3.3 (LOW).

How severe is CVE-2011-1089?

This vulnerability has a CVSS 2.0 base score of 3.3, rated LOW. 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-2011-1089?

Check the references section for vendor advisories and patches from gnu. Update glibc 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-2011-1089?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2011-1089 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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