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Fencer Intel
medium 6.8

CVE-2014-2525 json

Heap-based buffer overflow in the yaml_parser_scan_uri_escapes function in LibYAML before 0.1.6 allows context-dependent attackers to execu…

published 2014-03-28 12 y ago modified 2026-06-17 4 mo ago also EUVD-2014-2561

cvss
6.8
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
8.8%
EPSS 8.8% chance of exploitation in 30 days, percentile 95%
public exploits
0
none known

Summary

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.

Patch / fix

  • libyaml Debian 14, Debian 13, Debian 12 0.1.4-3.2
  • libyaml-libyaml-perl Debian 14, Debian 13, Debian 12 0.41-5

debian advisories DEBIAN-CVE-2014-2525

  • ruby193-libyaml RHEL 1 SOFTWARE_COLLECTIONS, openstack 3 0.1.4-5.1.el6
  • libyaml RHEL 6 COMMON, openstack 4, openstack 3 0.1.3-1.4.el6

red hat advisories RHSA-2014:0364RHSA-2014:0353RHSA-2014:0354RHSA-2014:0355RHSA-2014:0415

  • perl-YAML-LibYAML SLES 12, SLED 12, SLES for SAP 12 0.38-10.1

suse advisories SUSE-SU-2015:0953-1SUSE-SU-2015:0953-2

  • libyaml openSUSE Tumbleweed 0.1.6-4.8
  • perl-YAML-LibYAML openSUSE Tumbleweed 0.59-2.11

opensuse advisories openSUSE-SU-2024:10029-1openSUSE-SU-2024:10520-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2014-2525 updated cvss 6.8

libyaml: heap-based buffer overflow when parsing URLs

  • Red Hat OpenShift Enterprise 1 ruby193-libyaml
    affected: workaround, no fix planned “Will not fix”
  • Red Hat Enterprise Linux 6 libyaml
    affected: workaround, no fix available
  • Red Hat Enterprise MRG 1 libyaml Red Hat Enterprise MRG 2 libyaml
    affected: workaround, no fix planned “Will not fix”
  • Red Hat Subscription Asset Manager libyaml
    affected: workaround, no fix available
  • Red Hat Common for RHEL Server (v. 6) libyaml 0.1.3-1.4.el6
    fixed: vendor fix RHSA-2014:0415
  • Red Hat Enterprise Linux OpenStack Platform 3.0 libyaml 0.1.3-1.4.el6, ruby193-libyaml 0.1.4-5.1.el6
    fixed: vendor fix RHSA-2014:0353
  • Red Hat Enterprise Linux OpenStack Platform 4.0 libyaml 0.1.3-1.4.el6
    fixed: vendor fix RHSA-2014:0354
  • Red Hat Software Collections 1 for Red Hat Enterprise Linux Server (v. 6) ruby193-libyaml 0.1.4-5.1.el6 Red Hat Software Collections 1 for Red Hat Enterprise Linux Workstation (v. 6) ruby193-libyaml 0.1.4-5.1.el6
    fixed: vendor fix RHSA-2014:0355
show 1 more
  • Red Hat CloudForms Management Engine 5 ruby193-libyaml Red Hat Enterprise Linux 7 libyaml Red Hat Satellite 5 libyaml Red Hat Satellite 6 libyaml Red Hat Software Collections libyaml
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

8.77% chance of exploitation in the next 30 days, higher than 95% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • bitbucket.org https://bitbucket.org/xi/libyaml/commits/bce8b60f0b9af69fa9fab3093d0a41ba243de048 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P

Classification

Weakness
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.