CVE-2013-6393

mediumpriority · track · 30EPSS 0.074 · 94 %ileEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

7.39% (94th) EPSS

CVSS 6.8 · medium

Is it mine?

23 products

Check your exposure

Who says so?

6 sources

cnnvd · enisa_euvd · fstec_bdu · nvd

EPSS · scored 2026-10-27

The yaml_parser_scan_tag_uri function in scanner.c in LibYAML before 0.1.5 performs an incorrect cast, which allows remote attackers to cause a denial of service (application crash) and possibly execute arbitrary code via crafted tags in a YAML document, which triggers a heap-based buffer overflow.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

Fixedlibyaml-0:0.1.3-1.4.el6.src as a component of Red Hat Enterprise Linux OpenStack Platform 4.0redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/site/articles/11258
https://access.redhat.com/errata/RHSA-2014:0354
Fixedlibyaml-0:0.1.3-1.4.el6.x86_64 as a component of Red Hat Enterprise Linux OpenStack Platform 4.0redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/site/articles/11258
https://access.redhat.com/errata/RHSA-2014:0354
Fixedlibyaml-debuginfo-0:0.1.3-1.4.el6.x86_64 as a component of Red Hat Enterprise Linux OpenStack Platform 4.0redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/site/articles/11258
https://access.redhat.com/errata/RHSA-2014:0354
Fixedlibyaml-devel-0:0.1.3-1.4.el6.x86_64 as a component of Red Hat Enterprise Linux OpenStack Platform 4.0redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/site/articles/11258
https://access.redhat.com/errata/RHSA-2014:0354
Workaroundlibyaml-0:0.1.3-1.4.el6.src as a component of Red Hat Enterprise Linux OpenStack Platform 4.0redhat_csaf
Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
Workaroundlibyaml-0:0.1.3-1.4.el6.x86_64 as a component of Red Hat Enterprise Linux OpenStack Platform 4.0redhat_csaf
Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
Workaroundlibyaml-debuginfo-0:0.1.3-1.4.el6.x86_64 as a component of Red Hat Enterprise Linux OpenStack Platform 4.0redhat_csaf
Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
Workaroundlibyaml-devel-0:0.1.3-1.4.el6.x86_64 as a component of Red Hat Enterprise Linux OpenStack Platform 4.0redhat_csaf
Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

cvss

Technical severity, 0–10. One row per scoring source.

6.8

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.06.8mediumAV:N/AC:M/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 8.6 · impact 6.4

v2.06.8mediumAV:N/AC:M/Au:N/C:P/I:P/A:Psecondary · FSTEC (BDU) RU

v2.05.8mediumAV:N/AC:M/Au:N/C:P/I:P/A:P/E:Usecondary · CVSS-BT (t0sche)

v2.04.3mediumAV:A/AC:H/Au:N/C:P/I:P/A:Psecondary · Red Hat Product Security US

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-119USprimaryCWE-119USCWE-119USCWE-122US

affected products (23)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
Сообщество свободного программного обеспечения Debian GNU/Linux≤ 6fstec_bduRU
canonical ubuntu linux= 12.04nvdUScpe:2.3:o:canonical:ubuntu_linux:*:*:*:*:*:*:*:*
canonical ubuntu linux= 12.10nvdUScpe:2.3:o:canonical:ubuntu_linux:*:*:*:*:*:*:*:*
canonical ubuntu linux= 13.10nvdUScpe:2.3:o:canonical:ubuntu_linux:*:*:*:*:*:*:*:*
debian debian linux= 6.0nvdUScpe:2.3:o:debian:debian_linux:*:*:*:*:*:*:*:*
debian debian linux= 7.0nvdUScpe:2.3:o:debian:debian_linux:*:*:*:*:*:*:*:*
opensuse leap= 42.1nvdUScpe:2.3:o:opensuse:leap:*:*:*:*:*:*:*:*
opensuse opensuse= 11.4nvdUScpe:2.3:o:opensuse:opensuse:*:*:*:*:*:*:*:*
opensuse opensuse= 13.1nvdUScpe:2.3:o:opensuse:opensuse:*:*:*:*:*:*:*:*
opensuse opensuse= 13.2nvdUScpe:2.3:o:opensuse:opensuse:*:*:*:*:*:*:*:*
pyyaml libyaml≤ 0.1.4nvdUScpe:2.3:a:pyyaml:libyaml:*:*:*:*:*:*:*:*
pyyaml libyaml= 0.0.1nvdUScpe:2.3:a:pyyaml:libyaml:*:*:*:*:*:*:*:*
pyyaml libyaml= 0.1.1nvdUScpe:2.3:a:pyyaml:libyaml:*:*:*:*:*:*:*:*
pyyaml libyaml= 0.1.2nvdUScpe:2.3:a:pyyaml:libyaml:*:*:*:*:*:*:*:*
pyyaml libyaml= 0.1.3nvdUScpe:2.3:a:pyyaml:libyaml:*:*:*:*:*:*:*:*
redhat openstack= 3.0nvdUScpe:2.3:a:redhat:openstack:*:*:*:*:*:*:*:*
redhat openstack= 4.0nvdUScpe:2.3:a:redhat:openstack:*:*:*:*:*:*:*:*
npm libyaml< 0.2.3osvUSpkg:npm/libyaml
libyaml-0:0.1.3-1.4.el6.src as a component of Red Hat Enterprise Linux OpenStack Platform 4.0all versionsfixedredhat_csafUS

showing 20 of 23

advisories (2)

Vendor and ecosystem advisories describing this.

RHSA-2014:0354Red Hat Security Advisory: libyaml security update2014-04-02csaf · redhat_csafUS
Updated libyaml packages that fix two security issues are now available for Red Hat Enterprise Linux OpenStack Platform 4. The Red Hat Security Response Team has rated this update as having Important security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.
GHSA-m75h-cghq-c8h5Heap Based Buffer Overflow in libyaml2020-08-31ghsa · osvUS
Versions 0.2.2 and earlier depend on native libyaml version 0.1.5 or earlier. As such, they are affected by a heap-based buffer overflow vulnerability that may result in a crash or arbitrary code execution when parsing YAML tags. ## Recommendation - Update to version 0.2.3 that includes a version of LibYAML that contains a fix for this issue.

also known as (6)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu nvd osv redhat_csaf NVD CVE.org MITRE

published 2014-02-06modified 2026-06-17

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references (48)

External citations — patches, advisories, analysis.

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