Access Restriction Bypass The advisory has been revoked - it doesn't affect any version of package ruby1.8 (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UBUNTU1210-RUBY18-642610
- published24 Nov 2012
- disclosed24 Nov 2012
Introduced: 24 Nov 2012
CVE-2012-4522 (opens in a new tab)Amendment
The Ubuntu security team deemed this advisory irrelevant for Ubuntu:12.10.
NVD Description
Note: Versions mentioned in the description apply only to the upstream ruby1.8 package and not the ruby1.8 package as distributed by Ubuntu.
The rb_get_path_check function in file.c in Ruby 1.9.3 before patchlevel 286 and Ruby 2.0.0 before r37163 allows context-dependent attackers to create files in unexpected locations or with unexpected names via a NUL byte in a file path.
References
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2012-4522
- http://lists.fedoraproject.org/pipermail/package-announce/2012-October/090235.html
- http://lists.fedoraproject.org/pipermail/package-announce/2012-October/090515.html
- http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=37163
- http://www.ruby-lang.org/en/news/2012/10/12/poisoned-NUL-byte-vulnerability/
- http://www.openwall.com/lists/oss-security/2012/10/12/6
- http://www.openwall.com/lists/oss-security/2012/10/13/1
- http://www.openwall.com/lists/oss-security/2012/10/16/1
- http://rhn.redhat.com/errata/RHSA-2013-0129.html