Vulnerability · Published Nov 18, 2021 · Assigned by GitLab
CVE-2021-39928
High 7.5
In plain English
A high-severity security flaw in Wireshark from Wireshark Foundation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 5.9% (higher than 93% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)5.9%top 6.7% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
NULL pointer exception in the IEEE 802.11 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
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.20 | wireshark | 3.4.11-r0 | ALPINE-CVE-2021-39928 |
| Alpine:v3.21 | wireshark | 3.4.11-r0 | ALPINE-CVE-2021-39928 |
| Alpine:v3.22 | wireshark | 3.4.11-r0 | ALPINE-CVE-2021-39928 |
| Alpine:v3.23 | wireshark | 3.4.11-r0 | ALPINE-CVE-2021-39928 |
| Alpine:v3.24 | wireshark | 3.4.11-r0 | ALPINE-CVE-2021-39928 |
| Debian:12 | wireshark | 3.6.0-1 | DEBIAN-CVE-2021-39928 |
| Debian:13 | wireshark | 3.6.0-1 | DEBIAN-CVE-2021-39928 |
| Debian:14 | wireshark | 3.6.0-1 | DEBIAN-CVE-2021-39928 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Wireshark Foundation | Wireshark | >=3.4.0, <3.4.10>=3.2.0, <3.2.18 |
References
- https://www.wireshark.org/security/wnpa-sec-2021-13.html
- https://gitlab.com/wireshark/wireshark/-/issues/17704
- https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39928.json
- FEDORA-2021-97bd631e0a vendor-advisory
- FEDORA-2021-3747cf6107 vendor-advisory
- DSA-5019 vendor-advisory
- [debian-lts-announce] 20211226 [SECURITY] [DLA 2849-1] wireshark security update mailing-list
- GLSA-202210-04 vendor-advisory