CVE-2011-4838

NameCVE-2011-4838
DescriptionJRuby before 1.6.5.1 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, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDLA-209-1
Debian Bugs686867

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
jruby (PTS)jessie, jessie (lts)1.5.6-9+deb8u2fixed
stretch (security), stretch (lts), stretch1.7.26-1+deb9u3fixed
buster (security), buster, buster (lts)9.1.17.0-3+deb10u1fixed
bookworm9.3.9.0+ds-8fixed
sid, trixie9.4.8.0+ds-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
jrubysourcesqueeze1.5.1-1+deb6u1DLA-209-1
jrubysource(unstable)1.5.6-4low686867
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