CVE-2016-1938

Publication date 26 January 2016

Last updated 25 August 2025

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

6.5 · Medium

Score breakdown

Description

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 in 44.0+build3-0ubuntu1
16.10 yakkety
Fixed in 44.0+build3-0ubuntu1
16.04 LTS xenial
Fixed in 44.0+build3-0ubuntu1
15.10 wily
Fixed in 44.0+build3-0ubuntu0.15.10.1
15.04 vivid
Fixed in 44.0+build3-0ubuntu0.15.04.1
14.04 LTS trusty
Fixed in 44.0+build3-0ubuntu0.14.04.1
12.04 LTS precise
Fixed in 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 in 2:3.21-0ubuntu0.15.10.1
15.04 vivid Ignored end of life
14.04 LTS trusty
Fixed in 2:3.21-0ubuntu0.14.04.1
12.04 LTS precise
Fixed in 2:3.21-0ubuntu0.12.04.1
thunderbird 17.04 zesty
Fixed in 1:38.8.0+build1-0ubuntu1
16.10 yakkety
Fixed in 1:38.8.0+build1-0ubuntu1
16.04 LTS xenial
Fixed in 1:38.8.0+build1-0ubuntu0.16.04.1
15.10 wily
Fixed in 1:38.8.0+build1-0ubuntu0.15.10.1
15.04 vivid Ignored end of life
14.04 LTS trusty
Fixed in 1:38.8.0+build1-0ubuntu0.14.04.1
12.04 LTS precise
Fixed in 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

CVSS version: CVSS v3.0

Base score 6.5 · Medium

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

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