Vulnerabilities
Misconfiguration
Compliance
CVE Vulnerabilities

CVE-2021-4185

Loop with Unreachable Exit Condition ('Infinite Loop')

Published: Dec 30, 2021 | Modified: Nov 03, 2025
CVSS 3.x
7.5
HIGH
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.x
5 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P
RedHat/V2
RedHat/V3
7.5 MODERATE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Ubuntu
MEDIUM
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Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2021-4185
CWEhttps://cwe.mitre.org/data/definitions/835.html

Infinite loop in the RTMPT 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

Weakness

The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop.

Affected Software

NameVendorStart VersionEnd Version
WiresharkWireshark3.4.0 (including)3.4.11 (excluding)
WiresharkWireshark3.6.0 (including)3.6.0 (including)
WiresharkUbuntuesm-apps/bionic*
WiresharkUbuntuesm-apps/xenial*
WiresharkUbuntuesm-infra-legacy/trusty*
WiresharkUbuntuhirsute*
WiresharkUbuntuimpish*
WiresharkUbuntukinetic*
WiresharkUbuntulunar*
WiresharkUbuntumantic*
WiresharkUbuntutrusty*
WiresharkUbuntutrusty/esm*
WiresharkUbuntuupstream*
WiresharkUbuntuxenial*

References

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