The Verify function in crypto/dsa/dsa.go in Go before 1.5.4 and 1.6.x before 1.6.1 does…
Priority MEDIUM 40CWE-20Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Partial Red Hat: 1 fixed, 1 without a fix
Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat.
Summary
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.
Why it matters now
EPSS 0.04358 91st percentileScored 2026-11-07
Fix Partial Red Hat: 1 advisoryRed Hat: 1 fixed, 1 without a fix
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 6
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:opensuse:leap:42.1:*:*:*:*:*:*:* | 42.1 | Vulnerable | openSUSE |
| cpe:2.3:a:golang:go:1.6:*:*:*:*:*:*:* | 1.6 | Vulnerable | Go standard library |
| cpe:2.3:o:fedoraproject:fedora:22:*:*:*:*:*:*:* | 22 | Vulnerable | Fedoraproject |
| cpe:2.3:o:fedoraproject:fedora:23:*:*:*:*:*:*:* | 23 | Vulnerable | Fedoraproject |
| cpe:2.3:o:fedoraproject:fedora:24:*:*:*:*:*:*:* | 24 | Vulnerable | Fedoraproject |
| cpe:2.3:a:golang:go:*:*:*:*:*:*:*:* | up to 1.5 | Vulnerable | Go standard library |
- cpe:2.3:o:opensuse:leap:42.1:*:*:*:*:*:*:* Versions 42.1 Vulnerable ·openSUSE
- cpe:2.3:a:golang:go:1.6:*:*:*:*:*:*:* Versions 1.6 Vulnerable ·Go standard library
- cpe:2.3:o:fedoraproject:fedora:22:*:*:*:*:*:*:* Versions 22 Vulnerable ·Fedoraproject
- cpe:2.3:o:fedoraproject:fedora:23:*:*:*:*:*:*:* Versions 23 Vulnerable ·Fedoraproject
- cpe:2.3:o:fedoraproject:fedora:24:*:*:*:*:*:*:* Versions 24 Vulnerable ·Fedoraproject
- cpe:2.3:a:golang:go:*:*:*:*:*:*:*:* Versions up to 1.5 Vulnerable ·Go standard library
Remediation
Red Hat 1 advisory
- RHSA-2016:1538 Released 2016-08-02 · Red Hat rating Moderategolang security, bug fix, and enhancement update
- Red Hat Enterprise Linux Server Optional (v. 7) golang-1.6.3-1.el7_2.1, golang-bin-1.6.3-1.el7_2.1, golang-docs-1.6.3-1.el7_2.1 +3
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat OpenShift Enterprise 3 | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux Server Optional (v. 7) | Fixed | RHSA-2016:1538 |
Timeline
- 2026-10-02 Threatist record created from CVE-2016-3959
- 2026-10-03 Alias added: GHSA-w7w7-9368-hffm
References
Advisory 5
Sources
- CVE-2016-3959 · CVE Program
- CVE-2016-3959 · NVD
- FIRST EPSS
- GHSA-w7w7-9368-hffm · GitHub Advisory Database · CC BY 4.0
- CVE-2016-3959 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences