Buffer Overflow Vulnerability in Wireshark Analyzers Affecting Multiple Versions
CVE-2021-39922

7.5HIGH

Key Information:

Vendor

Wireshark
Status
Wireshark
Vendor
CVE Published:
19 November 2021

What is CVE-2021-39922?

The buffer overflow vulnerability in the C12.22 dissector of Wireshark versions 3.2.0 to 3.2.17 and 3.4.0 to 3.4.9 enables attackers to execute denial of service attacks. This can be accomplished by sending specially crafted packets or using malformed capture files. When such packets are processed, they may overwrite memory space, leading to application crashes and potential data loss during network analysis operations. Users are recommended to upgrade to the latest patched versions to mitigate this vulnerability.

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Affected Version(s)

Wireshark >=3.4.0, <3.4.10 < 3.4.0, 3.4.10

Wireshark >=3.2.0, <3.2.18 < 3.2.0, 3.2.18

References

https://www.wireshark.org/security/wnpa-sec-2021-12.html
https://gitlab.com/wireshark/wireshark/-/issues/17636
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

Doneing
JSON
.