CVE-2016-1979

Publication date 13 March 2016

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

Use-after-free vulnerability in the PK11_ImportDERPrivateKeyInfoAndReturnKey function in Mozilla Network Security Services (NSS) before 3.21.1, as used in Mozilla Firefox before 45.0, allows remote attackers to cause a denial of service or possibly have unspecified other impact via crafted key data with DER encoding.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
firefox	17.04 zesty	Not affected
	16.10 yakkety	Not affected
	16.04 LTS xenial	Not affected
	15.10 wily	Fixed 44.0.2+build1-0ubuntu0.15.10.1
	14.04 LTS trusty	Fixed 44.0.2+build1-0ubuntu0.14.04.1
	12.04 LTS precise	Fixed 44.0.2+build1-0ubuntu0.12.04.1
nss	17.04 zesty	Not affected
	16.10 yakkety	Not affected
	16.04 LTS xenial	Not affected
	15.10 wily	Not affected
	14.04 LTS trusty	Not affected
	12.04 LTS precise	Not affected
thunderbird	17.04 zesty	Fixed 1:38.8.0+build1-0ubuntu1
	16.10 yakkety	Fixed 1:38.8.0+build1-0ubuntu1
	16.04 LTS xenial	Fixed 1:38.8.0+build1-0ubuntu0.16.04.1
	15.10 wily	Fixed 1:38.8.0+build1-0ubuntu0.15.10.1
	14.04 LTS trusty	Fixed 1:38.8.0+build1-0ubuntu0.14.04.1
	12.04 LTS precise	Fixed 1:38.8.0+build1-0ubuntu0.12.04.1

Notes

mdeslaur

fix was actually in 3.21, not in 3.21.1 as mentioned

Patch details

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

Package	Patch details
nss	Upstream: http://hg.mozilla.org/projects/nss/rev/7033b1193c94

Severity score breakdown

Parameter	Value
Base score	8.8 · High
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	Required
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References

Related Ubuntu Security Notices (USN)

USN-2973-1
Thunderbird vulnerabilities
19 May 2016