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Vulnerability record · CVE-2014-2525 · published 28 March 2014

CVE-2014-2525: Pyyaml libyaml memory buffer overflow vulnerability

Pyyaml · Libyaml

Heap-based buffer overflow in the yaml_parser_scan_uri_escapes function in LibYAML before 0.1.6 allows context-dependent attackers to execute arbitrary code via a long sequence of percent-encoded characters in a URI in a YAML file.

6.8 CVSS 2.0 Medium EPSS 8.8% · top 5.0% CWE-119 · Memory buffer overflow
6.8CVSS 2.0 base score
8.8%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
44References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

Heap-based buffer overflow in the yaml_parser_scan_uri_escapes function in LibYAML before 0.1.6 allows context-dependent attackers to execute arbitrary code via a long sequence of percent-encoded characters in a URI in a YAML file.

AV:N/AC:M/Au:N/C:P/I:P/A:P

Affected products

3 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://advisories.mageia.org/MGASA-2014-0150.html Third Party Advisory
http://lists.opensuse.org/opensuse-updates/2014-04/msg00022.html Third Party Advisory
http://lists.opensuse.org/opensuse-updates/2015-02/msg00078.html Third Party Advisory
http://lists.opensuse.org/opensuse-updates/2016-04/msg00050.html Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2014-0353.html
http://rhn.redhat.com/errata/RHSA-2014-0354.html
http://rhn.redhat.com/errata/RHSA-2014-0355.html
http://secunia.com/advisories/57836
http://secunia.com/advisories/57966
http://secunia.com/advisories/57968
http://support.apple.com/kb/HT6443
http://www.debian.org/security/2014/dsa-2884
http://www.debian.org/security/2014/dsa-2885
http://www.getchef.com/blog/2014/04/09/chef-server-11-0-12-release/
http://www.getchef.com/blog/2014/04/09/enterprise-chef-1-4-9-release/
http://www.getchef.com/blog/2014/04/09/enterprise-chef-11-1-3-release/
http://www.mandriva.com/security/advisories?name=MDVSA-2015:060
http://www.ocert.org/advisories/ocert-2014-003.html US Government Resource
http://www.securityfocus.com/bid/66478
http://www.ubuntu.com/usn/USN-2160-1
https://bitbucket.org/xi/libyaml/commits/bce8b60f0b9af69fa9fab3093d0a41ba243de048 ExploitPatch
https://puppet.com/security/cve/cve-2014-2525
http://advisories.mageia.org/MGASA-2014-0150.html Third Party Advisory
http://lists.opensuse.org/opensuse-updates/2014-04/msg00022.html Third Party Advisory
http://lists.opensuse.org/opensuse-updates/2015-02/msg00078.html Third Party Advisory
http://lists.opensuse.org/opensuse-updates/2016-04/msg00050.html Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2014-0353.html
http://rhn.redhat.com/errata/RHSA-2014-0354.html
http://rhn.redhat.com/errata/RHSA-2014-0355.html
http://secunia.com/advisories/57836
http://secunia.com/advisories/57966
http://secunia.com/advisories/57968
http://support.apple.com/kb/HT6443
http://www.debian.org/security/2014/dsa-2884
http://www.debian.org/security/2014/dsa-2885
http://www.getchef.com/blog/2014/04/09/chef-server-11-0-12-release/
http://www.getchef.com/blog/2014/04/09/enterprise-chef-1-4-9-release/
http://www.getchef.com/blog/2014/04/09/enterprise-chef-11-1-3-release/
http://www.mandriva.com/security/advisories?name=MDVSA-2015:060
http://www.ocert.org/advisories/ocert-2014-003.html US Government Resource

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Source: NIST National Vulnerability Database (record CVE-2014-2525), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.