CVE-2023-0836
Published: 27 March 2023
An information leak vulnerability was discovered in HAProxy 2.1, 2.2 before 2.2.27, 2.3, 2.4 before 2.4.21, 2.5 before 2.5.11, 2.6 before 2.6.8, 2.7 before 2.7.1. There are 5 bytes left uninitialized in the connection buffer when encoding the FCGI_BEGIN_REQUEST record. Sensitive data may be disclosed to configured FastCGI backends in an unexpected way.
Priority
Status
| Package | Release | Status |
|---|---|---|
|
haproxy Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(code not present)
|
| focal |
Not vulnerable
(code not present)
|
|
| jammy |
Released
(2.4.18-0ubuntu1.3)
|
|
| kinetic |
Released
(2.4.18-1ubuntu1.3)
|
|
| lunar |
Not vulnerable
(2.6.9-1ubuntu1)
|
|
| trusty |
Ignored
(end of standard support)
|
|
| upstream |
Released
(2.6.8-1)
|
|
| xenial |
Not vulnerable
(code not present)
|
|
|
Patches: upstream: https://git.haproxy.org/?p=haproxy.git;a=commit;h=2e6bf0a2722866ae0128a4392fa2375bd1f03ff8 upstream: https://git.haproxy.org/?p=haproxy-2.6.git;a=commit;h=f988992d16f45ef03d5bbb024a1042ed8123e4c5 upstream: https://git.haproxy.org/?p=haproxy-2.2.git;a=commit;h=18575ba4e5057afdb80cc06135272889ae1fa2d1 |
||
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.5 |
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | None |
| Availability impact | None |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |