DescriptionRuby (aka CRuby) before 1.8.7-p357 computes hash values without 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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
NVD severityhigh (attack range: remote)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
ruby1.8 (PTS)wheezy1.8.7.358-7.1+deb7u3fixed
wheezy (security)
ruby1.9.1 (PTS)wheezy1.9.3.194-8.1+deb7u5fixed
wheezy (security)

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
ruby1.9source(unstable)(not affected)
ruby1.9.1source(unstable)(not affected)


- ruby1.9 <not-affected> (Includes randomisation of the hash function)
- ruby1.9.1 <not-affected> (Includes randomisation of the hash function)

Search for package or bug name: Reporting problems