CVE-2023-22796

Published: 9 February 2023

A regular expression based DoS vulnerability in Active Support <6.1.7.1 and <7.0.4.1. A specially crafted string passed to the underscore method can cause the regular expression engine to enter a state of catastrophic backtracking. This can cause the process to use large amounts of CPU and memory, leading to a possible DoS vulnerability.

Notes

In Oneiric-Saucy, rails package is just for transition;
The rails package contains actual code from vivid onward

Status

Severity score breakdown

References

• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-22796
• https://discuss.rubyonrails.org/t/cve-2023-22796-possible-redos-based-dos-vulnerability-in-active-supports-underscore/82116
• https://github.com/rails/rails/commit/4b383e6936d7a72b5dc839f526c9a9aeb280acae (6-1-stable)
• NVD
• Launchpad
• Debian