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CVE-2015-5312

7.1 · HIGH

The xmlStringLenDecodeEntities function in parser.c in libxml2 before 2.9.3 does not properly prevent entity expansion, which allows context-dependent attackers to cause a denial of service (CPU co…

Published Dec 15, 2015canonicalCWE-399EPSS 4.50%

Overview

CVE-2015-5312 is a high-severity vulnerability affecting canonical ubuntu_linux. It was published on December 15, 2015 and has a CVSS 2.0 base score of 7.1 (HIGH).

This vulnerability has a CVSS 2.0 base score of 7.1, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

The xmlStringLenDecodeEntities function in parser.c in libxml2 before 2.9.3 does not properly prevent entity expansion, which allows context-dependent attackers to cause a denial of service (CPU consumption) via crafted XML data, a different vulnerability than CVE-2014-3660.

Remediation

Check the references section for vendor advisories and patches from canonical. Update ubuntu_linux 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
appleiphone_os0Affected
applemac_os_x0Affected
appletvos0Affected
applewatchos0Affected
xmlsoftlibxml20Affected

References

Reflists.apple.com/archives/security-announce/2016/Mar/msg00000.htmlReflists.apple.com/archives/security-announce/2016/Mar/msg00001.htmlReflists.apple.com/archives/security-announce/2016/Mar/msg00002.htmlReflists.apple.com/archives/security-announce/2016/Mar/msg00004.htmlReflists.opensuse.org/opensuse-updates/2015-12/msg00120.htmlReflists.opensuse.org/opensuse-updates/2016-01/msg00031.htmlRefmarc.info/?l=bugtraq&m=145382616617563&w=2Refrhn.redhat.com/errata/RHSA-2015-2549.htmlRefrhn.redhat.com/errata/RHSA-2015-2550.htmlRefrhn.redhat.com/errata/RHSA-2016-1089.html

How CyberStrike helps

Frequently asked questions

What is CVE-2015-5312?

CVE-2015-5312 is a high-severity vulnerability affecting canonical ubuntu_linux. It was published on December 15, 2015 and has a CVSS 2.0 base score of 7.1 (HIGH).

How severe is CVE-2015-5312?

This vulnerability has a CVSS 2.0 base score of 7.1, 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-2015-5312?

Check the references section for vendor advisories and patches from canonical. Update ubuntu_linux 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-2015-5312?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2015-5312 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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