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CVE-2009-5064

6.9 · MEDIUM

ldd in the GNU C Library (aka glibc or libc6) 2.13 and earlier allows local users to gain privileges via a Trojan horse executable file linked with a modified loader that omits certain LD_TRACE_LOA…

Published Mar 30, 2011gnuCWE-264EPSS 0.52%

Overview

CVE-2009-5064 is a medium-severity vulnerability affecting gnu glibc. It was published on March 30, 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

ldd in the GNU C Library (aka glibc or libc6) 2.13 and earlier allows local users to gain privileges via a Trojan horse executable file linked with a modified loader that omits certain LD_TRACE_LOADED_OBJECTS checks. NOTE: the GNU C Library vendor states "This is just nonsense. There are a gazillion other ways to introduce code if people are downloading arbitrary binaries and install them in appropriate directories or set LD_LIBRARY_PATH etc.

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/2011/03/07/10Refopenwall.com/lists/oss-security/2011/03/07/13Refopenwall.com/lists/oss-security/2011/03/07/7Refopenwall.com/lists/oss-security/2011/03/08/1Refopenwall.com/lists/oss-security/2011/03/08/10Refopenwall.com/lists/oss-security/2011/03/08/2Refopenwall.com/lists/oss-security/2011/03/08/3Refopenwall.com/lists/oss-security/2011/03/08/7Refreverse.lostrealm.com/protect/ldd.htmlRefwww.catonmat.net/blog/ldd-arbitrary-code-execution/

How CyberStrike helps

Frequently asked questions

What is CVE-2009-5064?

CVE-2009-5064 is a medium-severity vulnerability affecting gnu glibc. It was published on March 30, 2011 and has a CVSS 2.0 base score of 6.9 (MEDIUM).

How severe is CVE-2009-5064?

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-2009-5064?

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-2009-5064?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2009-5064 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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