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Vulnerability · Published Dec 30, 2021 · Assigned by GitLab

CVE-2021-4184

High 7.5

In plain English

A high-severity security flaw in Wireshark from Wireshark Foundation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 4.1% (higher than 91% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.5High
Exploit odds (30 days)4.1%top 9.3% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official description

Infinite loop in the BitTorrent DHT dissector in Wireshark 3.6.0 and 3.4.0 to 3.4.10 allows denial of service via packet injection or crafted capture file

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Alpine:v3.20wireshark3.4.11-r0ALPINE-CVE-2021-4184
Alpine:v3.21wireshark3.4.11-r0ALPINE-CVE-2021-4184
Alpine:v3.22wireshark3.4.11-r0ALPINE-CVE-2021-4184
Alpine:v3.23wireshark3.4.11-r0ALPINE-CVE-2021-4184
Alpine:v3.24wireshark3.4.11-r0ALPINE-CVE-2021-4184
Debian:12wireshark3.6.2-1DEBIAN-CVE-2021-4184
Debian:13wireshark3.6.2-1DEBIAN-CVE-2021-4184
Debian:14wireshark3.6.2-1DEBIAN-CVE-2021-4184
Ubuntu:22.04:LTSwireshark3.6.2-2UBUNTU-CVE-2021-4184
Ubuntu:24.04:LTSwireshark4.2.2-1.1build3UBUNTU-CVE-2021-4184

Affected products (as reported)

VendorProductVersions
Wireshark Foundation Wireshark =3.6.0>=3.4.0, <3.4.10

References