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CVE-2013-4788

5.1 · MEDIUM

The PTR_MANGLE implementation in the GNU C Library (aka glibc or libc6) 2.4, 2.17, and earlier, and Embedded GLIBC (EGLIBC) does not initialize the random value for the pointer guard, which makes i…

Published Oct 4, 2013gnuCWE-20EPSS 11.43%

Overview

CVE-2013-4788 is a medium-severity vulnerability affecting gnu glibc. It was published on October 4, 2013 and has a CVSS 2.0 base score of 5.1 (MEDIUM).

This vulnerability has a CVSS 2.0 base score of 5.1, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

The PTR_MANGLE implementation in the GNU C Library (aka glibc or libc6) 2.4, 2.17, and earlier, and Embedded GLIBC (EGLIBC) does not initialize the random value for the pointer guard, which makes it easier for context-dependent attackers to control execution flow by leveraging a buffer-overflow vulnerability in an application and using the known zero value pointer guard to calculate a pointer address.

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

Refhmarco.org/bugs/CVE-2013-4788.htmlRefseclists.org/fulldisclosure/2015/Sep/23Refwww.mandriva.com/security/advisories?name=MDVSA-2013:283Refwww.mandriva.com/security/advisories?name=MDVSA-2013:284Refwww.openwall.com/lists/oss-security/2013/07/15/9Refwww.securityfocus.com/bid/61183Refsecurity.gentoo.org/glsa/201503-04Refhmarco.org/bugs/CVE-2013-4788.htmlRefseclists.org/fulldisclosure/2015/Sep/23Refwww.mandriva.com/security/advisories?name=MDVSA-2013:283

How CyberStrike helps

Frequently asked questions

What is CVE-2013-4788?

CVE-2013-4788 is a medium-severity vulnerability affecting gnu glibc. It was published on October 4, 2013 and has a CVSS 2.0 base score of 5.1 (MEDIUM).

How severe is CVE-2013-4788?

This vulnerability has a CVSS 2.0 base score of 5.1, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2013-4788?

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-2013-4788?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2013-4788 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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