Debian Long Term Support / LTS Security Information / 2019 / Security Information -- DLA-1735-1 ruby2.1

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