6.5

CVE-2018-18508: mozilla network_security_services NULL Pointer Dereference

CVSS: 6.5v3.1MediumModified
AliasesUBUNTU-CVE-2018-18508USN-3898-1DEBIAN-CVE-2018-18508
Published 22-10-2020Last modified 05-08-2024
Open JSON

Vulnerability summary

CVE-2018-18508 is a medium (CVSS 6.5) NULL Pointer Dereference vulnerability in mozilla network_security_services. EPSS estimates a 1.97% chance of exploitation in the next 30 days, higher than 80% of scored vulnerabilities.

Overall risk
26/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.5/10
010
Medium · v3.1 (NVD)
EPSS score
1.97%
0%100%
Low · +0.01 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 5 · Related 2
DLA-1704-1DLA-2388-1OPENSUSE-SU-2020:0008-1RHSA-2019:1951SUSE-SU-2019:3395-1

Timeline

  1. 22-10-2020
    PublishedVulnerability first disclosed.
  2. 05-08-2024
    Last modifiedVulnerability information updated.

Description

In Network Security Services (NSS) before 3.36.7 and before 3.41.1, a malformed signature can cause a crash due to a null dereference, resulting in a Denial of Service.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

1.97%

Chance of exploitation in the next 30 days

Percentile

80%

Versus all other CVEs

30-day change

+0.01 pp

From 1.96% on 18-09-2026

18-09-202618-10-2026
EPSS score
1.97%

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

Siemens8 products
Mozilla2 products
Debian1 product
  • nss< 2:3.42.1-1
Ubuntu1 product
  • nss< 2:3.28.4-0ubuntu0.14.04.5 | < 2:3.28.4-0ubuntu0.16.04.5 | < 2:3.35-2ubuntu2.2

4 vendors · 12 products

References

10 links