CVE-2016-3959: n/a vulnerability

CVE-2016-3959: 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...

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.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 6, 2024, 00:10 UTC (UTC+00:00)

Security readout for executives and security teams

Some Go programs built with vulnerable Go releases could be forced into an infinite loop when handling a malicious DSA public key. The business impact is denial of service, not data theft, and mainly affects services that process untrusted client certificates or SSH public keys. Exposure is most likely in legacy Go-built services that validate untrusted DSA public keys, especially mutual TLS endpoints using client certificates or SSH servers/libraries built with affected Go releases. Treat as a moderate availability risk for legacy Go services. Prioritize internet-facing authentication endpoints and managed SSH or mTLS services first, especially where outdated binaries may remain after toolchain patching. Mitigation focus: Upgrade Go to 1.5.4, 1.6.1, or later supported releases.; Rebuild statically linked Go services after upgrading the toolchain.; Apply relevant vendor updates for packaged Go runtimes or applications..

Prepared: Jun 13, 2026, 14:22 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: May 23, 2016, 19:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

0Timeline events

0ADP providers

3Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5
https://go-review.googlesource.com/#/c/21533/CVE reference · x_refsource_CONFIRM
[golang-announce] 20160412 [security] Go 1.6.1 and 1.5.4 are releasedCVE reference · mailing-list, x_refsource_MLIST

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

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