CVE-2016-1938

Publication date 26 January 2016

Last updated 24 July 2024

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

6.5 · Medium

Score breakdown

The s_mp_div function in lib/freebl/mpi/mpi.c in Mozilla Network Security Services (NSS) before 3.21, as used in Mozilla Firefox before 44.0, improperly divides numbers, which might make it easier for remote attackers to defeat cryptographic protection mechanisms by leveraging use of the (1) mp_div or (2) mp_exptmod function.

Status

Package Ubuntu Release Status
firefox 17.04 zesty
Fixed 44.0+build3-0ubuntu1
16.10 yakkety
Fixed 44.0+build3-0ubuntu1
16.04 LTS xenial
Fixed 44.0+build3-0ubuntu1
15.10 wily
Fixed 44.0+build3-0ubuntu0.15.10.1
15.04 vivid
Fixed 44.0+build3-0ubuntu0.15.04.1
14.04 LTS trusty
Fixed 44.0+build3-0ubuntu0.14.04.1
12.04 LTS precise
Fixed 44.0+build3-0ubuntu0.12.04.1
nss 17.04 zesty
Not affected
16.10 yakkety
Not affected
16.04 LTS xenial
Not affected
15.10 wily
Fixed 2:3.21-0ubuntu0.15.10.1
15.04 vivid Ignored end of life
14.04 LTS trusty
Fixed 2:3.21-0ubuntu0.14.04.1
12.04 LTS precise
Fixed 2:3.21-0ubuntu0.12.04.1
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
15.04 vivid Ignored end of life
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

Patch details

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

Package Patch details
nss

Severity score breakdown

Parameter Value
Base score 6.5 · Medium
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality Low
Integrity impact Low
Availability impact None
Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

References

Related Ubuntu Security Notices (USN)

Other references