Operating System:

[Ubuntu]

Published:

05 December 2019

Protect yourself against future threats.

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2019.4559
                     USN-4212-1: HAProxy vulnerability
                              5 December 2019

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           HAProxy
Publisher:         Ubuntu
Operating System:  Ubuntu
Impact/Access:     Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2019-19330  

Reference:         ESB-2019.4516

Original Bulletin: 
   https://usn.ubuntu.com/4212-1/

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USN-4212-1: HAProxy vulnerability
4 December 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

Summary

HAProxy could be made to execute arbitrary code if it received a specially
crafted HTTP/2 header.

Software Description

  o haproxy - fast and reliable load balancing reverse proxy

Details

Tim DA1/4sterhus discovered that HAProxy incorrectly handled certain HTTP/2
headers. An attacker could possibly use this issue to execute arbitrary code
through CRLF injection.

Update instructions

The problem can be corrected by updating your system to the following package
versions:

Ubuntu 19.10
    haproxy - 2.0.5-1ubuntu0.3
Ubuntu 19.04
    haproxy - 1.8.19-1ubuntu1.3
Ubuntu 18.04 LTS
    haproxy - 1.8.8-1ubuntu0.9

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-2019-19330

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===========================================================================
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