Description
OWASP ModSecurity Core Rule Set 3.1.x before 3.1.2, 3.2.x before 3.2.1, and 3.3.x before 3.3.2 is affected by a Request Body Bypass via a trailing pathname.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | modsecurity-crs | 3.3.2-1 | — |
| Debian 13 | modsecurity-crs | 3.3.2-1 | — |
| Debian 12 | modsecurity-crs | 3.3.2-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | modsecurity-crs | No fix yet | — |
| Ubuntu 26.04 LTS | modsecurity-crs | No fix yet | — |
| Ubuntu 25.10 | modsecurity-crs | No fix yet | — |
| Ubuntu 24.04 LTS | modsecurity-crs | No fix yet | — |
| Ubuntu 22.04 LTS | modsecurity-crs | No fix yet | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | modsecurity-crs | No fix yet | — |
| Ubuntu 18.04 LTS | modsecurity-crs | No fix yet | — |
| Ubuntu 16.04 LTS | modsecurity-crs | No fix yet | — |
References
- https://owasp.org/www-project-modsecurity-core-rule-set/
- https://portswigger.net/daily-swig/lessons-learned-how-a-severe-vulnerability-in-the-owasp-modsecurity-core-rule-set-sparked-much-needed-change
- https://portswigger.net/daily-swig/waf-bypass-severe-owasp-modsecurity-core-rule-set-bug-was-present-for-several-years
- https://coreruleset.org/20210630/cve-2021-35368-crs-request-body-bypass/
- FEDORA-2022-afa1e7b6c4 vendor-advisory
- FEDORA-2022-90453044f3 vendor-advisory
- [debian-lts-announce] 20230130 [SECURITY] [DLA 3293-1] modsecurity-crs security update mailing-list
- GLSA-202305-25 vendor-advisory