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CVE-2013-6393

Publication date 27 January 2014

Last updated 24 July 2024

Ubuntu priority

Medium

Why this priority?

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.

Read the notes from the security team

Status

Package Ubuntu Release Status
libyaml 13.10 saucy
Fixed 0.1.4-2ubuntu0.13.10.1
13.04 raring Ignored
12.10 quantal
Fixed 0.1.4-2ubuntu0.12.10.1
12.04 LTS precise
Fixed 0.1.4-2ubuntu0.12.04.1
10.04 LTS lucid Ignored
libyaml-libyaml-perl 13.10 saucy
Fixed 0.38-3ubuntu0.13.10.1
12.10 quantal
Fixed 0.38-3ubuntu0.12.10.1
12.04 LTS precise
Fixed 0.38-2ubuntu0.1
10.04 LTS lucid Ignored

Notes

mdeslaur

regression was introduced in USN-2098-1 redhat created three patches: libyaml-string-overflow.patch is upstream 1d73f004f49e6962cf936da98aecf0aec95c4c50 libyaml-node-id-hardening.patch seems to have been done differently upstream in b77d42277c32b58a114a0fa0968038a4b0ab24f4 libyaml-indent-column-overflow-v2.patch was done differently upstream in f859ed1eb757a3562b98a28a8ce69274bfd4b3f2 and af3599437a87162554787c52d8b16eab553f537b

References

Related Ubuntu Security Notices (USN)

    • USN-2161-1
    • libyaml-libyaml-perl vulnerabilities
    • 3 April 2014
    • USN-2098-1
    • LibYAML vulnerability
    • 4 February 2014

Other references