CVE-2016-1938 Weak cryptography in n/a

What is CVE-2016-1938?

CVE-2016-1938 is a medium-severity vulnerability in Mozilla Firefox, published on 31 Jan 2016. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official 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.

Weakness: CWE-310

Which versions are affected by CVE-2016-1938?

It affects 4 products.

Products include Mozilla Firefox, Mozilla Nss, Opensuse Leap, Opensuse Opensuse.

How do I fix CVE-2016-1938?

Upgrade to a fixed version.

Is CVE-2016-1938 being exploited?

There is no known exploitation of CVE-2016-1938 in the wild and no public exploit code.

Other vulnerabilities in Mozilla Firefox

• CVE-2019-11708 Mozilla Firefox and Thunderbird Sandbox Escape Exploited Critical 10.0
• CVE-2010-3765 Mozilla Multiple Products Remote Code Execution Exploited Critical 9.8
• CVE-2022-26486 Mozilla Firefox Use-After-Free Exploited Critical 9.6
• CVE-2022-26485 Mozilla Firefox Use-After-Free Exploited High 8.8
• CVE-2019-11707 Mozilla Firefox and Thunderbird Type Confusion Exploited High 8.8

All Mozilla Firefox vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2016-1938, DLA-427-1, GHSA-xp2m-37gc-hr6h, UBUNTU-CVE-2016-1938, USN-2903-1.