CVE-2016-3959

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.

Category

7.5
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 3.35% Top 15%
Vendor Advisory redhat.com Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory opensuse.org Vendor Advisory fedoraproject.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.openwall.com/lists/oss-security/2016/04/05/2 mailing list
https://go-review.googlesource.com/#/c/21533/
http://rhn.redhat.com/errata/RHSA-2016-1538.html vendor advisory
http://lists.fedoraproject.org/pipermail/package-announce/2016-April/182526.html vendor advisory
https://groups.google.com/forum/#%21topic/golang-announce/9eqIHqaWvck mailing list
http://lists.fedoraproject.org/pipermail/package-announce/2016-April/183106.html vendor advisory
http://lists.opensuse.org/opensuse-updates/2016-05/msg00077.html vendor advisory
http://www.openwall.com/lists/oss-security/2016/04/05/1 mailing list
http://lists.fedoraproject.org/pipermail/package-announce/2016-April/183137.html vendor advisory

Frequently Asked Questions

What is the severity of CVE-2016-3959?
CVE-2016-3959 has been scored as a high severity vulnerability.
How to fix CVE-2016-3959?
To fix CVE-2016-3959, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2016-3959 being actively exploited in the wild?
It is possible that CVE-2016-3959 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~3% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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