CVE-2012-4522

Description

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.

Category

5.0
CVSS
Severity: Medium
CVSS 2.0 •
EPSS 0.66%
Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory redhat.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://lists.fedoraproject.org/pipermail/package-announce/2012-October/090235.html vendor advisory
http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=37163
http://lists.fedoraproject.org/pipermail/package-announce/2012-October/090515.html vendor advisory
http://www.openwall.com/lists/oss-security/2012/10/13/1 mailing list
http://rhn.redhat.com/errata/RHSA-2013-0129.html vendor advisory
http://www.openwall.com/lists/oss-security/2012/10/16/1 mailing list
http://www.openwall.com/lists/oss-security/2012/10/12/6 mailing list
http://www.ruby-lang.org/en/news/2012/10/12/poisoned-NUL-byte-vulnerability/

Frequently Asked Questions

What is the severity of CVE-2012-4522?
CVE-2012-4522 has been scored as a medium severity vulnerability.
How to fix CVE-2012-4522?
To fix CVE-2012-4522, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2012-4522 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2012-4522 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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