Summary
It was discovered that Ruby incorrectly handled certain RubyGems.
An attacker could possibly use this issue to execute arbitrary commands.
(CVE-2019-8320)
It was discovered that Ruby incorrectly handled certain inputs.
An attacker could possibly use this issue to execute arbitrary code.
(CVE-2019-8321, CVE-2019-8322, CVE-2019-8323, CVE-2019-8324, CVE-2019-8325)
Fixed packages 4
| Release | Package | Fixed in |
|---|---|---|
| Ubuntu · 14.04 LTS 14.04:LTS | ruby1.9.1 | 1.9.3.484-2ubuntu1.14 |
| Ubuntu · 14.04 LTS 14.04:LTS | ruby2.0 | 2.0.0.484-1ubuntu2.13 |
| Ubuntu · 16.04 LTS 16.04:LTS | ruby2.3 | 2.3.1-2~16.04.12 |
| Ubuntu · 18.04 LTS 18.04:LTS | ruby2.5 | 2.5.1-1ubuntu1.2 |
Vulnerabilities 6
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High 8.8
Code injection in RubyGems
An issue was discovered in RubyGems 2.6 and later through 3.0.2. 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 du…
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High 7.5
RubyGems Escape sequence injection vulnerability in verbose
An issue was discovered in RubyGems 2.6 and later through 3.0.2. Since Gem::UserInteraction#verbose calls say without escaping, escape sequence injection is possible.
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High 7.5
RubyGems Escape sequence injection vulnerability in gem owner
An issue was discovered in RubyGems 2.6 and later through 3.0.2. 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.
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High 7.5
RubyGems Escape sequence injection vulnerability in api response handling
An issue was discovered in RubyGems 2.6 and later through 3.0.2. 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.
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High 7.5
RubyGems Escape sequence injection in errors
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.)
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High 7.4
RubyGems Delete directory using symlink when decompressing tar
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 b…