Package        : jruby
Version        : 1.5.6-5+deb7u1
CVE ID         : CVE-2018-1000075 CVE-2018-1000076 CVE-2018-1000077 CVE-2018-1000078

Multiple vulnerabilities were found in the rubygems package management
framework, embedded in JRuby, a pure-Java implementation of the Ruby
programming language.  

CVE-2018-1000075

    A negative size vulnerability in ruby gem package tar header that could
    cause an infinite loop.

CVE-2018-1000076

    Ruby gems package improperly verifies cryptographic signatures. A mis-signed
    gem could be installed if the tarball contains multiple gem signatures.

CVE-2018-1000077

    An improper input validation vulnerability in ruby gems specification
    homepage attribute could allow malicious gem to set an invalid homepage
    URL.

CVE-2018-1000078

    Cross Site Scripting (XSS) vulnerability in gem server display of homepage
    attribute

For Debian 7 "Wheezy", these problems have been fixed in version
1.5.6-5+deb7u1.

We recommend that you upgrade your jruby packages.

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS