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CVE-2015-8540

8.8 · HIGH

Integer underflow in the png_check_keyword function in pngwutil.c in libpng 0.90 through 0.99, 1.0.x before 1.0.66, 1.1.x and 1.2.x before 1.2.56, 1.3.x and 1.4.x before 1.4.19, and 1.5.x before 1.…

Published Apr 14, 2016CWE-189EPSS 6.48%

Overview

CVE-2015-8540 is a high-severity vulnerability. It was published on April 14, 2016 and has a CVSS 3.0 base score of 8.8 (HIGH).

This vulnerability has a CVSS 3.0 base score of 8.8, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Integer underflow in the png_check_keyword function in pngwutil.c in libpng 0.90 through 0.99, 1.0.x before 1.0.66, 1.1.x and 1.2.x before 1.2.56, 1.3.x and 1.4.x before 1.4.19, and 1.5.x before 1.5.26 allows remote attackers to have unspecified impact via a space character as a keyword in a PNG image, which triggers an out-of-bounds read.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. 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.

References

Reflists.fedoraproject.org/pipermail/package-announce/2015-December/174435.htmlRefsourceforge.net/p/libpng/bugs/244/Refsourceforge.net/p/libpng/code/ci/d9006f683c641793252d92254a75ae9b815b42ed/Refsourceforge.net/projects/libpng/files/libpng10/1.0.66/Refsourceforge.net/projects/libpng/files/libpng12/1.2.56/Refsourceforge.net/projects/libpng/files/libpng14/1.4.19/Refsourceforge.net/projects/libpng/files/libpng15/1.5.26/Refwww.debian.org/security/2016/dsa-3443Refwww.openwall.com/lists/oss-security/2015/12/10/6Refwww.openwall.com/lists/oss-security/2015/12/10/7

How CyberStrike helps

Frequently asked questions

What is CVE-2015-8540?

CVE-2015-8540 is a high-severity vulnerability. It was published on April 14, 2016 and has a CVSS 3.0 base score of 8.8 (HIGH).

How severe is CVE-2015-8540?

This vulnerability has a CVSS 3.0 base score of 8.8, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2015-8540?

Check the references section for vendor advisories, patches, and mitigation guidance. 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-2015-8540?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2015-8540 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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