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    CVE-2013-6393

    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.

    Published:Jan 27, 2014
    Last Modified:Apr 11, 2025
    EPS:Feb 6, 2014
    EPSS Score:0.08342
    CVSS Score:6.8

    Affected Products

    Vendor
    Canonical
    Product
    Ubuntu Linux
    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Opensuse
    Product
    Leap
    Vendor
    Opensuse
    Product
    Opensuse
    Vendor
    Pyyaml
    Product
    Libyaml
    Vendor
    Redhat
    Product
    Openstack
    Vendor
    Redhat
    Product
    Rhel Common
    Vendor
    Redhat
    Product
    Rhel Software Collections

    Exploits

    No exploit reference

    Related CVEs

    CVE-2026-13476 (CVSS 7.3) — IBM Informix Dynamic Server 14.10, 15.0, and 12.10 could allow an unauthenticated user to execute arbitrary co…
    CVE-2026-13367 (CVSS 7.8) — IBM Informix Dynamic Server 14.10, and 15.0 contain a local privilege escalation vulnerability in the oninit s…
    CVE-2026-47337 (CVSS 3.3) — Ubuntu Linux 6.8, 6.17 and 7.0 contain SAUCE patches with a possible NULL pointer dereference in the handling …
    CVE-2026-47336 (CVSS 3.3) — Ubuntu Linux 6.8 contains SAUCE patches with a possible use of an uninitialized variable in AppArmor AF_INET/A…
    CVE-2026-47335 (CVSS 5.5) — Ubuntu Linux 6.8 contains SAUCE patches with a possible NULL pointer dereference in the handling of AppArmor n…
    CVE-2026-47334 (CVSS 5.5) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly sleep while holding a spinlock…
    CVE-2026-47333 (CVSS 7.8) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which can potentially incorrectly compute the si…
    CVE-2026-47332 (CVSS 5.5) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly validate the size of an intern…
    CVE-2026-47331 (CVSS 7.8) — Ubuntu Linux 6.8 contains AppArmor SAUCE patches which fail to acquire a lock when modifying a linked list. An…
    CVE-2026-47330 (CVSS 3.3) — Ubuntu Linux 6.8, 7.17 and 7.0 contain AppArmor SAUCE patches which can, under certain circumstances, use an u…

    References

    http://advisories.mageia.org/MGASA-2014-0040.html
    http://archives.neohapsis.com/archives/bugtraq/2014-04/0134.html
    http://archives.neohapsis.com/archives/bugtraq/2014-10/0103.html
    http://lists.opensuse.org/opensuse-updates/2014-02/msg00064.html
    http://lists.opensuse.org/opensuse-updates/2014-02/msg00065.html
    http://lists.opensuse.org/opensuse-updates/2015-02/msg00078.html
    http://lists.opensuse.org/opensuse-updates/2016-04/msg00050.html
    http://osvdb.org/102716
    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://www.debian.org/security/2014/dsa-2850
    http://www.debian.org/security/2014/dsa-2870
    http://www.mandriva.com/security/advisories?name=MDVSA-2015:060
    http://www.securityfocus.com/bid/65258
    http://www.ubuntu.com/usn/USN-2098-1
    https://bitbucket.org/xi/libyaml/commits/tag/0.1.5
    https://bugzilla.redhat.com/attachment.cgi?id=847926&action=diff
    https://bugzilla.redhat.com/show_bug.cgi?id=1033990
    https://puppet.com/security/cve/cve-2013-6393
    https://support.apple.com/kb/HT6536
    http://advisories.mageia.org/MGASA-2014-0040.html
    http://archives.neohapsis.com/archives/bugtraq/2014-04/0134.html
    http://archives.neohapsis.com/archives/bugtraq/2014-10/0103.html
    http://lists.opensuse.org/opensuse-updates/2014-02/msg00064.html
    http://lists.opensuse.org/opensuse-updates/2014-02/msg00065.html
    http://lists.opensuse.org/opensuse-updates/2015-02/msg00078.html
    http://lists.opensuse.org/opensuse-updates/2016-04/msg00050.html
    http://osvdb.org/102716
    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://www.debian.org/security/2014/dsa-2850
    http://www.debian.org/security/2014/dsa-2870
    http://www.mandriva.com/security/advisories?name=MDVSA-2015:060
    http://www.securityfocus.com/bid/65258
    http://www.ubuntu.com/usn/USN-2098-1
    https://bitbucket.org/xi/libyaml/commits/tag/0.1.5
    https://bugzilla.redhat.com/attachment.cgi?id=847926&action=diff
    https://bugzilla.redhat.com/show_bug.cgi?id=1033990
    https://puppet.com/security/cve/cve-2013-6393
    https://support.apple.com/kb/HT6536

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High