CVE-2021-44790
Published: 20 December 2021
A carefully crafted request body can cause a buffer overflow in the mod_lua multipart parser (r:parsebody() called from Lua scripts). The Apache httpd team is not aware of an exploit for the vulnerabilty though it might be possible to craft one. This issue affects Apache HTTP Server 2.4.51 and earlier.
Notes
| Author | Note |
|---|---|
| mdeslaur | Fixed by r1896039 in 2.4.x |
| sbeattie | mod_lua is not runtime enabled with Apache's package config in Ubuntu by default. |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
apache2 Launchpad, Ubuntu, Debian |
bionic |
Released
(2.4.29-1ubuntu4.21)
|
| focal |
Released
(2.4.41-4ubuntu3.9)
|
|
| hirsute |
Released
(2.4.46-4ubuntu1.5)
|
|
| impish |
Released
(2.4.48-3.1ubuntu3.2)
|
|
| jammy |
Released
(2.4.52-1ubuntu1)
|
|
| trusty |
Released
(2.4.7-1ubuntu4.22+esm3)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
|
| upstream |
Released
(2.4.52)
|
|
| xenial |
Released
(2.4.18-2ubuntu3.17+esm4)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
|
|
Patches: upstream: https://svn.apache.org/viewvc?view=revision&revision=1896039 upstream: https://github.com/apache/httpd/commit/07b9768cef6a224d256358c404c6ed5622d8acce |
||
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 |