CVE-2021-26691
Published: 10 June 2021
In Apache HTTP Server versions 2.4.0 to 2.4.46 a specially crafted SessionHeader sent by an origin server could cause a heap overflow
Priority
Status
| Package | Release | Status |
|---|---|---|
|
apache2 Launchpad, Ubuntu, Debian |
bionic |
Released
(2.4.29-1ubuntu4.16)
|
| focal |
Released
(2.4.41-4ubuntu3.3)
|
|
| groovy |
Released
(2.4.46-1ubuntu1.2)
|
|
| hirsute |
Released
(2.4.46-4ubuntu1.1)
|
|
| impish |
Released
(2.4.46-4ubuntu2)
|
|
| jammy |
Released
(2.4.46-4ubuntu2)
|
|
| trusty |
Released
(2.4.7-1ubuntu4.22+esm1)
|
|
| upstream |
Released
(2.4.46-6)
|
|
| xenial |
Released
(2.4.18-2ubuntu3.17+esm1)
|
|
|
Patches: upstream: https://github.com/apache/httpd/commit/7e09dd714fc62c08c5b0319ed7b9702594faf49b |
||
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 9.8 |
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | High |
| Availability impact | High |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
References
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-26691
- https://httpd.apache.org/security/vulnerabilities_24.html#CVE-2021-26691
- https://lists.apache.org/thread.html/r50cae1b71f1e7421069036b213c26da7d8f47dd59874e3bd956959fe@%3Cannounce.httpd.apache.org%3E
- http://www.openwall.com/lists/oss-security/2021/06/10/7
- https://ubuntu.com/security/notices/USN-4994-1
- https://ubuntu.com/security/notices/USN-4994-2
- NVD
- Launchpad
- Debian