Descriptionactive_support/core_ext/hash/conversions.rb in Ruby on Rails before 2.3.15, 3.0.x before 3.0.19, 3.1.x before 3.1.10, and 3.2.x before 3.2.11 does not properly restrict casts of string values, which allows remote attackers to conduct object-injection attacks and execute arbitrary code, or cause a denial of service (memory and CPU consumption) involving nested XML entity references, by leveraging Action Pack support for (1) YAML type conversion or (2) Symbol type conversion.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SuSE, Mageia, GitHub code/issues, web search, more)
NVD severityhigh (attack range: remote)
Debian Bugs697722, 697789, 697790

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
rails (PTS)wheezy2:
jessie (security), jessie2:4.1.8-1+deb8u4fixed
buster, sid, stretch2:
ruby-activesupport-2.3 (PTS)wheezy2.3.14-7fixed
ruby-activesupport-3.2 (PTS)wheezy3.2.6-6+deb7u1fixed
wheezy (security)3.2.6-6+deb7u3fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs


Starting with rails is a transition package
experimental has 3.2.8-1 and should be affected too

Search for package or bug name: Reporting problems