Description
Unspecified vulnerability in (1) apreq_parse_headers and (2) apreq_parse_urlencoded functions in Apache2::Request (Libapreq2) before 2.07 allows remote attackers to cause a denial of service (CPU consumption) via unknown attack vectors that result in quadratic computational complexity.
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 13 | libapreq2 | 2.07-1 | — |
| Debian 3.1 | libapreq2-perl | 2.04-dev-1sarge2 | DSA-1000-2 |
Advisories 1
- DSA-1000-2 libapreq2-perl - design error Debian Security (DSA / DLA) · Mar 9, 2026
References
- 19658 third-party-advisory
- http://svn.apache.org/viewcvs.cgi/httpd/apreq/tags/v2_07/CHANGES?rev=376998&view=markup
- DSA-1000 vendor-advisory
- 19139 third-party-advisory
- 18846 third-party-advisory
- ADV-2006-0645 vdb-entry
- libapreq2-parsing-dos(24917) vdb-entry
- 737 third-party-advisory
- 16710 vdb-entry
- GLSA-200604-08 vendor-advisory