CVE-2016-3959

Name: CVE-2016-3959
Creator: NVD / NIST
Published: 2016-05-23T19:59:04.477+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 4.33%

Last modified Jun 17, 2026

CVE-2016-3959 is a vulnerability of currently unknown severity. The Verify function in crypto/dsa/dsa.go in Go before 1.5.4 and 1.6.x before 1.6.1 does not properly check parameters passed to the big integer library, which might allow remote attackers to cause a denial of service (infinite loop) via a crafted public key to a program that uses HTTPS client certificates or SSH server libraries.. EPSS estimates a 4.33% chance of exploitation in the next 30 days.

Description

The Verify function in crypto/dsa/dsa.go in Go before 1.5.4 and 1.6.x before 1.6.1 does not properly check parameters passed to the big integer library, which might allow remote attackers to cause a denial of service (infinite loop) via a crafted public key to a program that uses HTTPS client certificates or SSH server libraries.

Metrics

EPSS Probability

4.33%

89.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions
Opensuse	Leap	42.1
Golang	Go	1.6
Fedoraproject	Fedora	22
Fedoraproject	Fedora	23
Fedoraproject	Fedora	24
Golang	Go	<= 1.5

References

Timeline

Published: May 23, 2016
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2016-3959?

How severe is CVE-2016-3959?

Severity scoring for CVE-2016-3959 is pending analysis. The EPSS model estimates a 4.33% probability of exploitation in the next 30 days.

How do I fix CVE-2016-3959?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2016-3959?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST