CVE-2016-8616

Publication date 2 November 2016

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

A flaw was found in curl before version 7.51.0 When re-using a connection, curl was doing case insensitive comparisons of user name and password with the existing connections. This means that if an unused connection with proper credentials exists for a protocol that has connection-scoped credentials, an attacker can cause that connection to be reused if s/he knows the case-insensitive version of the correct password.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
curl	17.04 zesty	Fixed 7.50.1-1ubuntu2
	16.10 yakkety	Fixed 7.50.1-1ubuntu1.1
	16.04 LTS xenial	Fixed 7.47.0-1ubuntu2.2
	14.04 LTS trusty	Fixed 7.35.0-1ubuntu2.10
	12.04 LTS precise	Fixed 7.22.0-3ubuntu4.17

Severity score breakdown

Parameter	Value
Base score	5.9 · Medium
Attack vector	Network
Attack complexity	High
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	None
Integrity impact	High
Availability impact	None
Vector	CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

References

Related Ubuntu Security Notices (USN)

USN-3123-1
curl vulnerabilities
3 November 2016