apache2/modsecurity.c in ModSecurity before 2.7.6 allows remote attackers to bypass rules by using chunked transfer coding with a capitalized Chunked value in the Transfer-Encoding HTTP header.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Modsecurity | Trustwave | * | 2.7.6 (excluding) |
| Libapache-mod-security | Ubuntu | lucid | * |
| Libapache-mod-security | Ubuntu | upstream | * |
| Modsecurity-apache | Ubuntu | precise | * |
| Modsecurity-apache | Ubuntu | quantal | * |
| Modsecurity-apache | Ubuntu | saucy | * |
| Modsecurity-apache | Ubuntu | upstream | * |
References
- http://martin.swende.se/blog/HTTPChunked.html
- http://www.debian.org/security/2014/dsa-2991
- https://github.com/SpiderLabs/ModSecurity/commit/f8d441cd25172fdfe5b613442fedfc0da3cc333d
- http://martin.swende.se/blog/HTTPChunked.html
- http://www.debian.org/security/2014/dsa-2991
- https://github.com/SpiderLabs/ModSecurity/commit/f8d441cd25172fdfe5b613442fedfc0da3cc333d