CVE-2017-7507

Publication date 9 June 2017

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

GnuTLS version 3.5.12 and earlier is vulnerable to a NULL pointer dereference while decoding a status response TLS extension with valid contents. This could lead to a crash of the GnuTLS server application.

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
gnutls28	19.04 disco	Fixed 3.5.8-6ubuntu1
	18.10 cosmic	Fixed 3.5.8-6ubuntu1
	18.04 LTS bionic	Fixed 3.5.8-6ubuntu1
	17.10 artful	Fixed 3.5.8-6ubuntu1
	17.04 zesty	Fixed 3.5.6-4ubuntu4.1
	16.10 yakkety	Fixed 3.5.3-5ubuntu1.2
	16.04 LTS xenial	Fixed 3.4.10-4ubuntu1.3
	14.04 LTS trusty	Not in release

Patch details

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

Package	Patch details
gnutls28	Upstream: 4c4d352 Upstream: 3efb6c5 Upstream: e1d6c59 Upstream: 9d95c91 Upstream: 023a20d Upstream: 3ade67e

Severity score breakdown

Parameter	Value
Base score	7.5 · High
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	High
Vector	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

Related Ubuntu Security Notices (USN)

USN-3318-1
GnuTLS vulnerabilities
13 June 2017