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AUSCERT External Security Bulletin Redistribution
ESB-2019.4099
USN-4174-1: HAproxy vulnerability
6 November 2019
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AusCERT Security Bulletin Summary
---------------------------------
Product: HAproxy
Publisher: Ubuntu
Operating System: Ubuntu
UNIX variants (UNIX, Linux, OSX)
Impact/Access: Increased Privileges -- Remote/Unauthenticated
Unauthorised Access -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2019-18277
Original Bulletin:
https://usn.ubuntu.com/4174-1/
Comment: This advisory references vulnerabilities in products which run on
platforms other than Ubuntu. It is recommended that administrators
running HAproxy check for an updated version of the software for
their operating system.
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USN-4174-1: HAproxy vulnerability
5 November 2019
haproxy vulnerability
A security issue affects these releases of Ubuntu and its derivatives:
o Ubuntu 19.10
o Ubuntu 19.04
o Ubuntu 18.04 LTS
o Ubuntu 16.04 LTS
Summary
HAproxy would allow unintended access if ii received specially crafted HTTP
request.
Software Description
o haproxy - fast and reliable load balancing reverse proxy
Details
It was discovered that HAproxy incorrectly handled certain HTTP requests. An
attacker could possibly use this issue to a privilege escalation (Request
Smuggling).
Update instructions
The problem can be corrected by updating your system to the following package
versions:
Ubuntu 19.10
haproxy - 2.0.5-1ubuntu0.2
Ubuntu 19.04
haproxy - 1.8.19-1ubuntu1.2
Ubuntu 18.04 LTS
haproxy - 1.8.8-1ubuntu0.7
Ubuntu 16.04 LTS
haproxy - 1.6.3-1ubuntu0.3
To update your system, please follow these instructions: https://
wiki.ubuntu.com/Security/Upgrades .
In general, a standard system update will make all the necessary changes.
References
o CVE-2019-18277
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