DescriptionMultiple format string vulnerabilities in log_subscriber.rb files in the log subscriber component in Action Mailer in Ruby on Rails 3.x before 3.2.15 allow remote attackers to cause a denial of service via a crafted e-mail address that is improperly handled during construction of a log message.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SuSE, Mageia, GitHub code/issues, web search, more)
ReferencesDSA-2887-1, DSA-2888-1
NVD severitymedium (attack range: remote)
Debian Bugs726576

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
stretch, sid2:
ruby-actionmailer-2.3 (PTS)wheezy2.3.14-3fixed
ruby-actionmailer-3.2 (PTS)wheezy (security), wheezy3.2.6-2+deb7u1fixed
ruby-actionpack-3.2 (PTS)wheezy3.2.6-6+deb7u2fixed
wheezy (security)3.2.6-6+deb7u3fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
railssource(unstable)(not affected)
rails-4.0source(unstable)(not affected)
ruby-actionmailer-2.3source(unstable)(not affected)


- rails-4.0 <not-affected> (Only affects 3.x)
- ruby-actionmailer-2.3 <not-affected> (Only affects 3.x)
- rails <not-affected> (Only affects 3.x)
Starting with rails is a transition package

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