PT-2021-6885 · Wireshark+5 · Wireshark+5

Published 2021-11-23 · Updated 2025-06-04 · CVE-2021-4185

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions Wireshark versions 3.4.0 through 3.4.10 Wireshark version 3.6.0

Description The issue is related to an infinite loop in the RTMPT dissector, which can lead to a denial of service. This can be achieved via packet injection or a crafted capture file. A remote attacker can exploit this issue by sending specially crafted packets, resulting in a denial of service.

Recommendations For Wireshark versions 3.4.0 through 3.4.10, consider disabling the RTMPT dissector as a temporary workaround until a patch is available. For Wireshark version 3.6.0, consider disabling the RTMPT dissector as a temporary workaround until a patch is available. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

DoS

Infinite Loop

Weakness Enumeration

CWE-835

Related Identifiers

ALT-PU-2022-1005

ALT-PU-2022-1096

ALT-PU-2022-1368

ALT-PU-2022-1599

AZL-7420

BDU:2022-02437

CVE-2021-4185

DLA-2967-1

DLA-3906-1

MGASA-2022-0004

OESA-2022-1610

OPENSUSE-SU-2022:0375-1

OPENSUSE-SU-2022_0375-1

OPENSUSE-SU-2024:11703-1

SUSE-SU-2022:0375-1

USN-7552-1

Affected Products

Alt Linux

Astra Linux

Linuxmint

Suse

Ubuntu

Wireshark

References · 71

• 🔥 https://gitlab.com/wireshark/wireshark/-/issues/17745 · Exploit
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Q6XGBKWSQFCVYUN4ZK3O3NJIFP3OAFVT · Vendor Advisory
• https://osv.dev/vulnerability/USN-7552-1 · Vendor Advisory
• https://advisories.mageia.org/MGASA-2022-0004.html · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2022:0375-1 · Vendor Advisory
• https://osv.dev/vulnerability/MGASA-2022-0004 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R5AEK3XTOIOGCGUILUFISMGX54YJXWGJ · Vendor Advisory
• https://ubuntu.com/security/CVE-2022-0582 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2021-4185 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2021-4185 · Security Note
• https://ubuntu.com/security/CVE-2021-39929 · Vendor Advisory
• https://ubuntu.com/security/CVE-2022-0581 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-4185 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-22207 · Security Note
• https://bdu.fstec.ru/vul/2022-02437 · Security Note