CVE-2021-22902

Published: 11 June 2021

The actionpack ruby gem (a framework for handling and responding to web requests in Rails) before 6.0.3.7, 6.1.3.2 suffers from a possible denial of service vulnerability in the Mime type parser of Action Dispatch. Carefully crafted Accept headers can cause the mime type parser in Action Dispatch to do catastrophic backtracking in the regular expression engine.

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://www.cve.org/CVERecord?id=CVE-2021-22902
• NVD
• Launchpad
• Debian