Denial of Service Vulnerability in Wireshark by The Wireshark Foundation
CVE-2021-4182

7.5HIGH

Key Information:

Vendor

Wireshark
Status
Wireshark
Vendor
CVE Published:
30 December 2021

What is CVE-2021-4182?

A vulnerability in Wireshark allows a denial of service due to a crash in the RFC 7468 dissector. This can be triggered by packet injection or by using a crafted capture file, potentially disrupting network analysis operations for users on affected versions.

Affected Version(s)

Wireshark =3.6.0 = 3.6.0

Wireshark >=3.4.0, <3.4.10 < 3.4.0, 3.4.10

References

https://www.wireshark.org/security/wnpa-sec-2021-20.html
https://gitlab.com/wireshark/wireshark/-/issues/17801
https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE...

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

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CVE-2021-4182 : Denial of Service Vulnerability in Wireshark by The Wireshark Foundation