Amazon Linux 1 Security Advisory: ALAS-2014-323
Advisory Release Date: 2014-04-10 23:55 Pacific
Advisory Updated Date: 2014-09-18 00:20 Pacific
Severity:
Medium
Issue Overview:
The BEGIN regular expression in the awk script detector in magic/Magdir/commands in file before 5.15 uses multiple wildcards with unlimited repetitions, which allows context-dependent attackers to cause a denial of service (CPU consumption) via a crafted ASCII file that triggers a large amount of backtracking, as demonstrated via a file with many newline characters.
Affected Packages:
file
Issue Correction:
Run yum update file to update your system.
New Packages:
i686:
file-static-5.11-13.16.amzn1.i686
file-libs-5.11-13.16.amzn1.i686
file-debuginfo-5.11-13.16.amzn1.i686
file-5.11-13.16.amzn1.i686
file-devel-5.11-13.16.amzn1.i686
noarch:
python-magic-5.11-13.16.amzn1.noarch
src:
file-5.11-13.16.amzn1.src
x86_64:
file-libs-5.11-13.16.amzn1.x86_64
file-static-5.11-13.16.amzn1.x86_64
file-5.11-13.16.amzn1.x86_64
file-debuginfo-5.11-13.16.amzn1.x86_64
file-devel-5.11-13.16.amzn1.x86_64