| Name | CVE-2021-26690 |
| Description | Apache HTTP Server versions 2.4.0 to 2.4.46 A specially crafted Cookie header handled by mod_session can cause a NULL pointer dereference and crash, leading to a possible Denial Of Service |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-2706-1, DSA-4937-1 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| apache2 (PTS) | buster | 2.4.38-3+deb10u8 | fixed |
| buster (security) | 2.4.38-3+deb10u10 | fixed |
| bullseye | 2.4.56-1~deb11u2 | fixed |
| bullseye (security) | 2.4.56-1~deb11u1 | fixed |
| bookworm | 2.4.57-2 | fixed |
| sid, trixie | 2.4.58-1 | fixed |
The information below is based on the following data on fixed versions.
Notes
https://httpd.apache.org/security/vulnerabilities_24.html#CVE-2021-26690
https://github.com/apache/httpd/commit/67bd9bfe6c38831e14fe7122f1d84391472498f8