CVE-2023-25725
Publication date 14 February 2023
Last updated 24 July 2024
Ubuntu priority
HAProxy before 2.7.3 may allow a bypass of access control because HTTP/1 headers are inadvertently lost in some situations, aka "request smuggling." The HTTP header parsers in HAProxy may accept empty header field names, which could be used to truncate the list of HTTP headers and thus make some headers disappear after being parsed and processed for HTTP/1.0 and HTTP/1.1. For HTTP/2 and HTTP/3, the impact is limited because the headers disappear before being parsed and processed, as if they had not been sent by the client. The fixed versions are 2.7.3, 2.6.9, 2.5.12, 2.4.22, 2.2.29, and 2.0.31.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| haproxy | 24.04 LTS noble |
Fixed 2.6.9-1ubuntu1
|
| 22.04 LTS jammy |
Fixed 2.4.18-0ubuntu1.2
|
|
| 20.04 LTS focal |
Fixed 2.0.29-0ubuntu1.3
|
|
| 18.04 LTS bionic |
Fixed 1.8.8-1ubuntu0.13
|
|
| 16.04 LTS xenial |
Vulnerable
|
|
| 14.04 LTS trusty | Ignored |
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score |
9.1 · Critical
|
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | High |
| Availability impact | High |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H |
References
Related Ubuntu Security Notices (USN)
- USN-5869-1
- HAProxy vulnerability
- 14 February 2023