CVE-2018-19115

Publication date 8 November 2018

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

keepalived before 2.0.7 has a heap-based buffer overflow when parsing HTTP status codes resulting in DoS or possibly unspecified other impact, because extract_status_code in lib/html.c has no validation of the status code and instead writes an unlimited amount of data to the heap.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
keepalived	19.04 disco	Not affected
	18.10 cosmic	Fixed 1:1.3.9-1ubuntu1.1
	18.04 LTS bionic	Fixed 1:1.3.9-1ubuntu0.18.04.2
	16.04 LTS xenial	Fixed 1:1.2.24-1ubuntu0.16.04.2
	14.04 LTS trusty	Fixed 1:1.2.7-1ubuntu1+esm1

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Patch details

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

Package	Patch details
keepalived	Upstream: f280156

Severity score breakdown

CVSS version: CVSS v3.0

Base score 9.8 · Critical

Base metrics

Parameter	Value
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality impact	High
Integrity impact	High
Availability impact	High

Scores

Parameter	Value
Base score	9.8 · Critical
Exploitability score	-
Impact score	-

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

Related Ubuntu Security Notices (USN)

USN-3995-1
Keepalived vulnerability
28 May 2019

USN-3995-2
Keepalived vulnerability
28 May 2019