Debian Security Advisory

DLA-1735-1 ruby2.1 -- LTS security update

Date Reported:
29 Mar 2019
Affected Packages:
ruby2.1
Vulnerable:
Yes
Security database references:
In Mitre's CVE dictionary: CVE-2019-8320, CVE-2019-8322, CVE-2019-8323, CVE-2019-8324, CVE-2019-8325.
More information:

Several vulnerabilities have been discovered in rubygems embedded in ruby2.1, the interpreted scripting language.

  • CVE-2019-8320

    A Directory Traversal issue was discovered in RubyGems. Before making new directories or touching files (which now include path-checking code for symlinks), it would delete the target destination.

  • CVE-2019-8322

    The gem owner command outputs the contents of the API response directly to stdout. Therefore, if the response is crafted, escape sequence injection may occur.

  • CVE-2019-8323

    Gem::GemcutterUtilities#with_response may output the API response to stdout as it is. Therefore, if the API side modifies the response, escape sequence injection may occur.

  • CVE-2019-8324

    A crafted gem with a multi-line name is not handled correctly. Therefore, an attacker could inject arbitrary code to the stub line of gemspec, which is eval-ed by code in ensure_loadable_spec during the preinstall check.

  • CVE-2019-8325

    An issue was discovered in RubyGems 2.6 and later through 3.0.2. Since Gem::CommandManager#run calls alert_error without escaping, escape sequence injection is possible. (There are many ways to cause an error.)

For Debian 8 Jessie, these problems have been fixed in version 2.1.5-2+deb8u7.

We recommend that you upgrade your ruby2.1 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