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

CVSS v3.0 7.5 HIGH
CVSS v2.0 5.0 MEDIUM

7.5^/10

CVSS v3.0 : HIGH

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

5.0^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

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 Patch Third Party Advisory
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

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Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:wireshark:wireshark::::::::
	cpe:2.3:a:wireshark:wireshark::::::::

Configuration 2 (hide)

OR	cpe:2.3:o:fedoraproject:fedora:34:::::::*
	cpe:2.3:o:fedoraproject:fedora:35:::::::*

Configuration 3 (hide)

cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

Information

Published : 2021-11-19 09:15

Updated : 2022-10-16 10:15

NVD link : CVE-2021-39921

Mitre link : CVE-2021-39921

JSON object : View

CWE

CWE-476

NULL Pointer Dereference

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Products Affected

debian

debian_linux

fedoraproject

fedora

wireshark

wireshark

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