A Directory Traversal issue was discovered in RubyGems 2.7.6 and later through 3.0.2. Before making new directories or touching files (which now include path-checking code for symlinks), it would delete the target destination. If that destination was hidden behind a symlink, a malicious gem could delete arbitrary files on the user's machine, presuming the attacker could guess at paths. Given how frequently gem is run as sudo, and how predictable paths are on modern systems (/tmp, /usr, etc.), this could likely lead to data loss or an unusable system.

Affected: RubyGems: rubygems-update

A Directory Traversal issue was discovered in RubyGems 2.7.6 and later through 3.0.2. Before making new directories or touching files (which now include path-checking code for symlinks), it would delete the target destination. If that destination was hidden behind a symlink, a malicious gem could delete arbitrary files on the user's machine, presuming the attacker could guess at paths. Given how frequently gem is run as sudo, and how predictable paths are on modern systems (/tmp, /usr, etc.), this could likely lead to data loss or an unusable system.

Security update for ruby-bundled-gems-rpmhelper, ruby2.5

rubygems: Delete directory using symlink when decompressing tar rubygems: Escape sequence injection vulnerability in verbose rubygems: Escape sequence injection vulnerability in gem owner rubygems: Escape sequence injection vulnerability in API response handling rubygems: Installing a malicious gem may lead to arbitrary code execution rubygems: Escape sequence injection vulnerability in errors

Security update for ruby-bundled-gems-rpmhelper, ruby2.5

Affected: Ubuntu:14.04:LTS: ruby1.9.1, Ubuntu:14.04:LTS: ruby2.0, Ubuntu:16.04:LTS: ruby2.3, Ubuntu:18.04:LTS: ruby2.5, Ubuntu:18.04:LTS: jruby

A Directory Traversal issue was discovered in RubyGems 2.7.6 and later through 3.0.2. Before making new directories or touching files (which now include path-checking code for symlinks), it would delete the target destination. If that destination was hidden behind a symlink, a malicious gem could delete arbitrary files on the user's machine, presuming the attacker could guess at paths. Given how frequently gem is run as sudo, and how predictable paths are on modern systems (/tmp, /usr, etc.), this could likely lead to data loss or an unusable system.