5.7

CVE-2018-16869: nettle_project nettle Observable Discrepancy

CVSS: 5.7v3.1MediumModified
AliasesMGASA-2019-0024SUSE-SU-2018:4193-1UBUNTU-CVE-2018-16869
Published 03-12-2018Last modified 05-08-2024
Open JSON

Vulnerability summary

CVE-2018-16869 is a medium (CVSS 5.7) Observable Discrepancy vulnerability in nettle_project nettle. EPSS estimates a 1.49% chance of exploitation in the next 30 days, higher than 73.7% of scored vulnerabilities.

Overall risk
23/100
0100
Low · default modelHow is this calculated?
CVSS score
5.7/10
010
Medium · v3.1 (NVD)
EPSS score
1.49%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 1 · Related 1
USN-4990-1

Timeline

  1. 03-12-2018
    PublishedVulnerability first disclosed.
  2. 05-08-2024
    Last modifiedVulnerability information updated.

Description

A Bleichenbacher type side-channel based padding oracle attack was found in the way nettle handles endian conversion of RSA decrypted PKCS#1 v1.5 data. An attacker who is able to run a process on the same physical core as the victim process, could use this flaw extract plaintext or in some cases downgrade any TLS connections to a vulnerable server.

CVSS metrics

7 scores · 4 sources · 3 versions

EPSS trend

Probability

1.49%

Chance of exploitation in the next 30 days

Percentile

74%

Versus all other CVEs

30-day change

0.00 pp

From 1.49% on 18-09-2026

18-09-202618-10-2026
EPSS score
1.49%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Suse2 products
  • libnettle&distro=SUSE Linux Enterprise Module for Basesystem 15< 3.4-4.3.1
  • libnettle&distro=SUSE Linux Enterprise Module for Desktop Applications 15< 3.4-4.3.1
[unknown]1 product
Debian1 product
  • nettle< 3.4.1~rc1-1
Mageia1 product
  • nettle< 3.4.1-1.mga6
Nettle_project1 product
Ubuntu1 product
  • nettleAll versions (No fix recorded) | < 3.4.1-0ubuntu0.18.04.1

6 vendors · 7 products

References

15 links
Show all 15 references