ELA-114-1 ruby1.9.1 security update

fix several escape sequence injections, directory traversal fix

Related CVEs CVE-2019-8320 CVE-2019-8322 CVE-2019-8323 CVE-2019-8325

Several vulnerabilities have been discovered in rubygems embedded in ruby1.9.1, 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-2019-8325: Since Gem::CommandManager#run calls alert_error without escaping, escape sequence injection is possible. (There are many ways to cause an error.)

For Debian 7 Wheezy, these problems have been fixed in version

We recommend that you upgrade your ruby1.9.1 packages.

Further information about Extended LTS security advisories can be found at: https://deb.freexian.com/extended-lts/