CVE-2023-0056

Publication date 18 January 2023

Last updated 24 July 2024

Ubuntu priority

Cvss 3 Severity Score

An uncontrolled resource consumption vulnerability was discovered in HAProxy which could crash the service. This issue could allow an authenticated remote attacker to run a specially crafted malicious server in an OpenShift cluster. The biggest impact is to availability.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
haproxy	22.10 kinetic	Fixed 2.4.18-1ubuntu1.1
	22.04 LTS jammy	Fixed 2.4.18-0ubuntu1.1
	20.04 LTS focal	Fixed 2.0.29-0ubuntu1.1
	18.04 LTS bionic	Not affected
	16.04 LTS xenial	Not affected
	14.04 LTS trusty	Ignored end of standard support

Notes

mdeslaur

code in bionic and earlier is different, and there is no indication it is vulnerable to the same issue, and there is no reproducer for this, so marking as not-affected.

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
haproxy	Upstream: 827a629

Severity score breakdown

Parameter	Value
Base score	6.5 · Medium
Attack vector	Network
Attack complexity	Low
Privileges required	Low
User interaction	None
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	High
Vector	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References

Related Ubuntu Security Notices (USN)

USN-5819-1
HAProxy vulnerability
23 January 2023