CVE-2012-5371

NameCVE-2012-5371
DescriptionRuby (aka CRuby) 1.9 before 1.9.3-p327 and 2.0 before r37575 computes hash values without properly restricting the ability to trigger hash collisions predictably, which allows context-dependent attackers to cause a denial of service (CPU consumption) via crafted input to an application that maintains a hash table, as demonstrated by a universal multicollision attack against a variant of the MurmurHash2 algorithm, a different vulnerability than CVE-2011-4815.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDLA-263-1
Debian Bugs693024

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
ruby1.8source(unstable)(not affected)
ruby1.9.1sourcesqueeze1.9.2.0-2+deb6u5DLA-263-1
ruby1.9.1source(unstable)1.9.3.194-4693024

Notes

- ruby1.8 <not-affected> (Only affects 1.9.x)

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