CVE-2017-5334

Publication date 11 January 2017

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

Double free vulnerability in the gnutls_x509_ext_import_proxy function in GnuTLS before 3.3.26 and 3.5.x before 3.5.8 allows remote attackers to have unspecified impact via crafted policy language information in an X.509 certificate with a Proxy Certificate Information extension.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
gnutls26	19.04 disco	Not in release
	18.10 cosmic	Not in release
	18.04 LTS bionic	Not in release
	17.10 artful	Not in release
	17.04 zesty	Not in release
	16.10 yakkety	Not in release
	16.04 LTS xenial	Not in release
	14.04 LTS trusty	Not affected
	12.04 LTS precise	Not affected
gnutls28	19.04 disco	Fixed 3.5.6-4ubuntu3
	18.10 cosmic	Fixed 3.5.6-4ubuntu3
	18.04 LTS bionic	Fixed 3.5.6-4ubuntu3
	17.10 artful	Fixed 3.5.6-4ubuntu3
	17.04 zesty	Fixed 3.5.6-4ubuntu3
	16.10 yakkety	Fixed 3.5.3-5ubuntu1.1
	16.04 LTS xenial	Fixed 3.4.10-4ubuntu1.2
	14.04 LTS trusty	Not in release
	12.04 LTS precise	Ignored end of life

Notes

mdeslaur

looks like this was introduced by https://gitlab.com/gnutls/gnutls/commit/2bd323f728d75c44a2d7398503178b75e5b63263

Patch details

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

Package	Patch details
gnutls28	Upstream: c5aaa48 Upstream: bbfd47d

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-3183-1
GnuTLS vulnerabilities
1 February 2017