7.5

CVE-2018-7421: wireshark Infinite Loop

CVSS: 7.5v3.1HighModified
AliasesUBUNTU-CVE-2018-7421DEBIAN-CVE-2018-7421
Published 23-02-2018Last modified 05-08-2024
Open JSON

Vulnerability summary

CVE-2018-7421 is a high (CVSS 7.5) Infinite Loop vulnerability in wireshark. EPSS estimates a 1.70% chance of exploitation in the next 30 days, higher than 76.8% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
40/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (NVD)
EPSS score
1.70%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference

Advisory lineage

Upstream 0 · Downstream 2 · Related 2
SUSE-SU-2018:0811-1SUSE-SU-2018:0867-1

Timeline

  1. 23-02-2018
    PublishedVulnerability first disclosed.
  2. 05-08-2024
    Last modifiedVulnerability information updated.

Description

In Wireshark 2.2.0 to 2.2.12 and 2.4.0 to 2.4.4, the DMP dissector could go into an infinite loop. This was addressed in epan/dissectors/packet-dmp.c by correctly supporting a bounded number of Security Categories for a DMP Security Classification.

CVSS metrics

5 scores · 3 sources · 3 versions

EPSS trend

Probability

1.70%

Chance of exploitation in the next 30 days

Percentile

77%

Versus all other CVEs

30-day change

0.00 pp

From 1.70% on 19-09-2026

19-09-202619-10-2026
EPSS score
1.70%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (bugs.wireshark.org)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Debian1 product
  • wireshark< 2.4.5-1
Ubuntu1 product
  • wireshark< 2.6.3-1~ubuntu14.04.1 | < 2.6.3-1~ubuntu16.04.1 | < 2.6.3-1~ubuntu18.04.1
Wireshark1 product
  • wireshark≥ 2.2.0, ≤ 2.2.12 | ≥ 2.4.0, ≤ 2.4.4

3 vendors · 3 products

References

9 links