CVE-2022-23517

HIGH7.5

Inefficient Regular Expression Complexity in rails-html-sanitizer

Published Dec 14, 2022

Modified 4 months ago

Details

rails-html-sanitizer is responsible for sanitizing HTML fragments in Rails applications. Certain configurations of rails-html-sanitizer < 1.4.4 use an inefficient regular expression that is susceptible to excessive backtracking when attempting to sanitize certain SVG attributes. This may lead to a denial of service through CPU resource consumption. This issue has been patched in version 1.4.4.

References

WEB

https://github.com/rails/rails-html-sanitizer/commit/56c61c0cebd1e493e8ad7bca2a0191609a4a6979

WEB

https://github.com/rails/rails-html-sanitizer/security/advisories/GHSA-5x79-w82f-gw8w

WEB

https://hackerone.com/reports/1684163

WEB

https://lists.debian.org/debian-lts-announce/2023/09/msg00012.html

WEB

https://lists.debian.org/debian-lts-announce/2024/09/msg00045.html

ADVISORY