Main Vulnerability Database Vulnerabilities #VU53976

Infinite loop in Wireshark - CVE-2021-22222

Published: June 9, 2021

Vulnerability identifier: #VU53976

CSH Severity: Medium

CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2021-22222

CWE-ID: CWE-835

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to infinite loop within the DVB-S2-BB dissector. A remote attacker can consume all available system resources and cause denial of service conditions.

Affected software

Wireshark
Arch Linux
Gentoo Linux
wireshark (Debian package)

How to mitigate CVE-2021-22222

Install updates from vendor's website.

Wireshark - update to 3.4.6
wireshark (Debian package) - update to 3.4.10-0+deb11u1

External References

https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22222.json
https://www.wireshark.org/security/wnpa-sec-2021-05.html
https://gitlab.com/wireshark/wireshark/-/merge_requests/3130

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