CVE Vulnerability

CVE-2021-39921

NULL pointer exception in the Modbus dissector in Wireshark 3.4.0 to 3.4.9 and 3.2.0 to 3.2.17 allows denial of service via packet injection or crafted capture file

5 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 10 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

Scope

7.5 /10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://www.wireshark.org/security/wnpa-sec-2021-14.html Vendor Advisory
https://gitlab.com/wireshark/wireshark/-/issues/17703 Exploit Issue Tracking
https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39921.json Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/A6AJFIYIHS3TYDD2EBYBJ5KKE52X34BJ/ Mailing List Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/YEWTIRMC2MFQBZ2O5M4CJHJM4JPBHLXH/ Mailing List Third Party Advisory
https://www.debian.org/security/2021/dsa-5019 Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/12/msg00015.html Mailing List Third Party Advisory
https://security.gentoo.org/glsa/202210-04 Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:wireshark:wireshark:*:*:*:*:*:*:*:*
cpe:2.3:a:wireshark:wireshark:*:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
Information

Published : 2021-11-19 05:15

Updated : 2022-10-28 08:09

NVD link : CVE-2021-39921

Mitre link : CVE-2021-39921

Products Affected
No products.
CWE
CWE-476