- Vulnerability/
- USN-5869-1
USN-5869-1: HAProxy vulnerability
First published: Tue Feb 14 2023(Updated: )
Bahruz Jabiyev, Anthony Gavazzi, Engin Kirda, Kaan Onarlioglu, Adi Peleg, and Harvey Tuch discovered that HAProxy incorrectly handled empty header names. A remote attacker could possibly use this issue to manipulate headers and bypass certain authentication checks and restrictions.
| Affected Software | Affected Version | How to fix |
|---|---|---|
| All of | ||
| ubuntu/haproxy | <2.4.18-1ubuntu1.2 | 2.4.18-1ubuntu1.2 |
| Ubuntu | =22.10 | |
| All of | ||
| ubuntu/haproxy | <2.4.18-0ubuntu1.2 | 2.4.18-0ubuntu1.2 |
| Ubuntu | =22.04 | |
| All of | ||
| ubuntu/haproxy | <2.0.29-0ubuntu1.3 | 2.0.29-0ubuntu1.3 |
| Ubuntu | =20.04 | |
| All of | ||
| ubuntu/haproxy | <1.8.8-1ubuntu0.13 | 1.8.8-1ubuntu0.13 |
| Ubuntu | =18.04 |
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Reference Links
- https://ubuntu.com/security/CVE-2023-25725
- https://ubuntu.com/security/notices/USN-7135-1
- https://launchpad.net/ubuntu/+source/haproxy/2.4.18-1ubuntu1.2
- https://launchpad.net/ubuntu/+source/haproxy/2.4.18-0ubuntu1.2
- https://launchpad.net/ubuntu/+source/haproxy/2.0.29-0ubuntu1.3
- https://launchpad.net/ubuntu/+source/haproxy/1.8.8-1ubuntu0.13
- https://ubuntu.com/security/notices/USN-5869-1 (Advisory)
Frequently Asked Questions
What is the severity of USN-5869-1?
USN-5869-1 is considered a moderate severity vulnerability that allows remote attackers to manipulate headers.
How do I fix USN-5869-1?
To fix USN-5869-1, upgrade HAProxy to the specified remedial version for your Ubuntu distribution.
Which versions are affected by USN-5869-1?
USN-5869-1 affects HAProxy versions earlier than 2.4.18-1ubuntu1.2, 2.4.18-0ubuntu1.2, 2.0.29-0ubuntu1.3, and 1.8.8-1ubuntu0.13 on specific Ubuntu releases.
What can attackers do with USN-5869-1?
An attacker can potentially exploit USN-5869-1 to manipulate HTTP headers and bypass authentication checks.
Is there a specific workaround for USN-5869-1?
There is no specific workaround; the recommended action is to update to the patched versions of HAProxy.
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