CVE-2018-16839

Publication date 31 October 2018

Last updated 25 August 2025

Ubuntu priority

Why this priority?

Cvss 3 Severity Score

Score breakdown

Description

Curl versions 7.33.0 through 7.61.1 are vulnerable to a buffer overrun in the SASL authentication code that may lead to denial of service.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
curl	18.10 cosmic	Fixed 7.61.0-1ubuntu2.2
	18.04 LTS bionic	Fixed 7.58.0-2ubuntu3.5
	16.04 LTS xenial	Fixed 7.47.0-1ubuntu2.11
	14.04 LTS trusty	Fixed 7.35.0-1ubuntu2.19

Notes

mdeslaur

introduced by https://github.com/curl/curl/commit/c56f9797e7feb7c2dc

Severity score breakdown

Parameter	Value
Base score	9.8 · Critical
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
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-3805-1
curl vulnerabilities
31 October 2018

Other references