ALAS-2014-324


Amazon Linux AMI Security Advisory: ALAS-2014-324
Advisory Release Date: 2014-09-18 00:20 Pacific
Severity: Important

Issue Overview:

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.

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.


Affected Packages:

perl-YAML-LibYAML


Issue Correction:
Run yum update perl-YAML-LibYAML to update your system.

New Packages:
i686:
    perl-YAML-LibYAML-debuginfo-0.41-4.9.amzn1.i686
    perl-YAML-LibYAML-0.41-4.9.amzn1.i686

src:
    perl-YAML-LibYAML-0.41-4.9.amzn1.src

x86_64:
    perl-YAML-LibYAML-debuginfo-0.41-4.9.amzn1.x86_64
    perl-YAML-LibYAML-0.41-4.9.amzn1.x86_64