CVE-2013-6393
libyaml: heap-based buffer overflow when parsing YAML tags
Severity
ModerateRed Hat Product Security
CVSS 2.0
Review impact separately from score.
Published · January 27, 2014
Updated · June 28, 2026
Description
A heap based buffer oveflow exists in the libyaml package such that a remote attacker could provide a specifically crafted YAML document when parsed by the application could result in remote code execution and complete compromise of the system.
Statement
The Red Hat security response team has rated this issue as having low security impact in Red Hat Enterpise MRG 1 and 2, CloudForms 3, and Red Hat Network Satellite 5. This issue is not currently planned to be addressed in future updates.Redhat satellite 6 does not ship libyaml
The Red Hat security response team has rated this issue as having low security impact in Red Hat Update Infrastructure. A future update may address this issue.
The Red Hat security response team has rated this issue as having moderate security impact in Subscription Asset Manager 1. A future update may address this issue.
For additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
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 / CWE
CVSS 2.0 · 4.3AV:A/AC:H/Au:N/C:P/I:P/A:P
CWE-122 · Heap-based Buffer Overflow