ESB-2018.0957 - [UNIX/Linux][Debian] rubygems and jruby: Multiple vulnerabilities 2018-04-03

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.0957
                    rubygems and jruby security update
                               3 April 2018

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           rubygems
                   jruby
Publisher:         Debian
Operating System:  Debian GNU/Linux 7
                   UNIX variants (UNIX, Linux, OSX)
Impact/Access:     Modify Arbitrary Files         -- Remote with User Interaction
                   Cross-site Scripting           -- Remote with User Interaction
                   Denial of Service              -- Remote with User Interaction
                   Provide Misleading Information -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-1000078 CVE-2018-1000077 CVE-2018-1000076
                   CVE-2018-1000075  

Original Bulletin: 
   https://lists.debian.org/debian-lts-announce/2018/04/msg00000.html
   https://lists.debian.org/debian-lts-announce/2018/04/msg00001.html

Comment: This bulletin contains two (2) Debian security advisories.
         
         This advisory references vulnerabilities in products which run on 
         platforms other than Debian. It is recommended that administrators 
         running rubygems or jruby check for an updated version of the 
         software for their operating system.

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Package        : rubygems
Version        : 1.8.24-1+deb7u2
CVE ID         : CVE-2018-1000075 CVE-2018-1000076 CVE-2018-1000077 
		 CVE-2018-1000078

Multiple vulnerabilities were found in rubygems, a package management 
framework for Ruby.

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
1.8.24-1+deb7u2.

We recommend that you upgrade your rubygems 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

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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

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