7.5

CVE-2016-3959: fedoraproject fedora Improper Input Validation

Modified
AliasesMGASA-2016-0207UBUNTU-CVE-2016-3959GO-2022-0166
Published 23-05-2016Last modified 06-08-2024

Vulnerability summary

CVE-2016-3959 is a high (CVSS 7.5) Improper Input Validation vulnerability in fedoraproject fedora. EPSS estimates a 4.36% chance of exploitation in the next 30 days, higher than 91.2% of scored vulnerabilities.

Priority
Prioritisesevere

Severe, CVSS 7.5 (NVD); no exploitation reported by the 5 checked sources; EPSS 4% (FIRST, 03-11-2026)

Source freshness unavailable

How is this decided?
CVSS score
7.5/10
010
High · v3.0 (NVD)
EPSS score
4.36%
0%100%
Low · -0.06 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 6 · Related 5
OPENSUSE-SU-2024:10028-1OPENSUSE-SU-2024:10803-1OPENSUSE-SU-2024:10804-1OPENSUSE-SU-2024:10805-1OPENSUSE-SU-2024:10812-1RHSA-2016:1538

Timeline

  1. 23-05-2016
    PublishedVulnerability first disclosed.
  2. 06-08-2024
    Last modifiedVulnerability information updated.

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.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

4.36%

Chance of exploitation in the next 30 days

Percentile

91%

Versus all other CVEs

30-day change

Decrease -0.06 pp

From 4.42% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Fedoraproject1 product
Go1 product
  • stdlib≥ 1.6.0-0, < 1.6.1
Golang1 product
  • go1.6 | ≤ 1.5
Mageia1 product
  • golang< 1.6.2-7.mga5
Opensuse1 product
Ubuntu1 product
  • golang-1.6< 1.6.1-0ubuntu1

6 vendors · 6 products

References

20 links
Show all 20 references