5.5

CVE-2016-2178: canonical ubuntu_linux Observable Discrepancy

Modified
AliasesALPINE-CVE-2016-2178UBUNTU-CVE-2016-2178DEBIAN-CVE-2016-2178
Published 20-06-2016Last modified 05-08-2024

Vulnerability summary

CVE-2016-2178 is a medium (CVSS 5.5) Observable Discrepancy vulnerability in canonical ubuntu_linux. EPSS estimates a 1.24% chance of exploitation in the next 30 days, higher than 69.2% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
1.24%
0%100%
Low · 0.00 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 18 · Related 10
DLA-637-1DSA-3673-1MGASA-2016-0338MGASA-2016-0408OPENSUSE-SU-2024:11127-1RHSA-2016:1940

Timeline

  1. 20-06-2016
    PublishedVulnerability first disclosed.
  2. 05-08-2024
    Last modifiedVulnerability information updated.

Description

The dsa_sign_setup function in crypto/dsa/dsa_ossl.c in OpenSSL through 1.0.2h does not properly ensure the use of constant-time operations, which makes it easier for local users to discover a DSA private key via a timing side-channel attack.

CVSS metrics

6 scores · 4 sources · 3 versions

EPSS trend

Probability

1.24%

Chance of exploitation in the next 30 days

Percentile

69%

Versus all other CVEs

30-day change

No change 0.00 pp

From 1.24% 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: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Debian2 products
Oracle2 products
Alpine1 product
  • openssl< 1.0.2h-r1
Canonical1 product
Nodejs1 product
  • node.js≥ 0.10.0, < 0.10.47 | ≥ 0.12.0, < 0.12.16 | ≥ 4.0.0, ≤ 4.1.2 | ≥ 4.2.0, < 4.6.0 | ≥ 5.0.0, < 6.7.0
Openssl1 product
  • opensslEOL1.0.1 | 1.0.1a | 1.0.1b | 1.0.1c | 1.0.1d | 1.0.1e | 1.0.1f | 1.0.1g | 1.0.1h | 1.0.1i | 1.0.1j | 1.0.1k | 1.0.1l | 1.0.1m | 1.0.1n | 1.0.1o | 1.0.1p | 1.0.1q | 1.0.1r | 1.0.1s | 1.0.1t | 1.0.2 | 1.0.2a | 1.0.2b | 1.0.2c | 1.0.2d | 1.0.2e | 1.0.2f | 1.0.2g | 1.0.2h
Suse1 product
Ubuntu1 product
  • openssl< 1.0.1f-1ubuntu2.20 | < 1.0.2g-1ubuntu4.4

8 vendors · 10 products

References

77 links
Show all 77 references