CVE-2021-39920 : NULL pointer exception in the IPPUSB dissector in Wireshark 3.4.0 to 3.4.9 allow

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

Published 2021-11-18 19:15:08

Updated 2022-10-28 20:09:38

Source GitLab Inc.

View at NVD, CVE.org

Vulnerability category: Denial of service

Products affected by CVE-2021-39920

Wireshark » Wireshark
Versions from including (>=) 3.4.0 and before (<) 3.4.10
cpe:2.3:a:wireshark:wireshark:*:*:*:*:*:*:*:*
Matching versions
Fedoraproject » Fedora » Version: 34
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
Matching versions
Fedoraproject » Fedora » Version: 35
cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
Matching versions

EPSS FAQ

0.40%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 73 %

Percentile, the proportion of vulnerabilities that are scored at or less

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
5.0	MEDIUM	AV:N/AC:L/Au:N/C:N/I:N/A:P	10.0	2.9	NIST
Access Vector: Network Access Complexity: Low Authentication: None Confidentiality Impact: None Integrity Impact: None Availability Impact: Partial
7.5	HIGH	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	3.9	3.6	GitLab Inc.
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: None Integrity: None Availability: High
7.5	HIGH	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	3.9	3.6	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: None Integrity: None Availability: High

CWE-476 NULL Pointer Dereference

The product dereferences a pointer that it expects to be valid but is NULL.

Assigned by: nvd@nist.gov (Primary)

https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/YEWTIRMC2MFQBZ2O5M4CJHJM4JPBHLXH/

[SECURITY] Fedora 34 Update: wireshark-3.6.0-1.fc34 - package-announce - Fedora Mailing-Lists
Mailing List;Third Party Advisory

CVEs referencing this url
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/A6AJFIYIHS3TYDD2EBYBJ5KKE52X34BJ/

[SECURITY] Fedora 35 Update: wireshark-3.6.0-1.fc35 - package-announce - Fedora Mailing-Lists
Mailing List;Third Party Advisory

CVEs referencing this url
https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39920.json

2021/CVE-2021-39920.json · master · GitLab.org / cves · GitLab
Third Party Advisory
https://www.wireshark.org/security/wnpa-sec-2021-15.html

Wireshark · wnpa-sec-2021-15 · IPPUSB dissector crash
Vendor Advisory
https://gitlab.com/wireshark/wireshark/-/issues/17705

Fuzz job crash output: fuzz-2021-11-01-6716.pcap (#17705) · Issues · Wireshark Foundation / wireshark · GitLab
Exploit;Issue Tracking;Third Party Advisory
https://security.gentoo.org/glsa/202210-04

Wireshark: Multiple Vulnerabilities (GLSA 202210-04) — Gentoo security
Third Party Advisory

CVEs referencing this url
https://www.debian.org/security/2021/dsa-5019

Debian -- Security Information -- DSA-5019-1 wireshark
Third Party Advisory

CVEs referencing this url

Jump to