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AUSCERT External Security Bulletin Redistribution
ESB-2023.0917
USN-5869-1: HAProxy vulnerability
16 February 2023
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AusCERT Security Bulletin Summary
---------------------------------
Product: HAProxy
Publisher: Ubuntu
Operating System: Ubuntu
Resolution: Patch/Upgrade
CVE Names: CVE-2023-25725
Original Bulletin:
https://ubuntu.com/security/notices/USN-5869-1
Comment: CVSS (Max): 7.5 CVE-2023-25725 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N)
CVSS Source: Red Hat
Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
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USN-5869-1: HAProxy vulnerability
14 February 2023
HAProxy could allow unintended access to network services.
Reduce your security exposure
Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and
Universe repositories, and it is free for up to five machines.
Learn more about Ubuntu Pro
Releases
o Ubuntu 22.10
o Ubuntu 22.04 LTS
o Ubuntu 20.04 LTS
o Ubuntu 18.04 LTS
Packages
o haproxy - fast and reliable load balancing reverse proxy
Details
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.
Reduce your security exposure
Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and
Universe repositories, and it is free for up to five machines.
Learn more about Ubuntu Pro
Update instructions
The problem can be corrected by updating your system to the following package
versions:
Ubuntu 22.10
o haproxy - 2.4.18-1ubuntu1.2
Ubuntu 22.04
o haproxy - 2.4.18-0ubuntu1.2
Ubuntu 20.04
o haproxy - 2.0.29-0ubuntu1.3
Ubuntu 18.04
o haproxy - 1.8.8-1ubuntu0.13
In general, a standard system update will make all the necessary changes.
References
o CVE-2023-25725
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