Vulnerability · Published Dec 30, 2021 · Assigned by GitLab
CVE-2021-4186
Medium 6.3
In plain English
A medium-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 2.3% (higher than 83% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)6.3Medium
Exploit odds (30 days)2.3%top 16.6% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
Crash in the Gryphon dissector in Wireshark 3.4.0 to 3.4.10 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-2021-4186 |
| Alpine:v3.21 | wireshark | 3.4.11-r0 | ALPINE-CVE-2021-4186 |
| Alpine:v3.22 | wireshark | 3.4.11-r0 | ALPINE-CVE-2021-4186 |
| Alpine:v3.23 | wireshark | 3.4.11-r0 | ALPINE-CVE-2021-4186 |
| Alpine:v3.24 | wireshark | 3.4.11-r0 | ALPINE-CVE-2021-4186 |
| Debian:12 | wireshark | 3.6.0-1 | DEBIAN-CVE-2021-4186 |
| Debian:13 | wireshark | 3.6.0-1 | DEBIAN-CVE-2021-4186 |
| Debian:14 | wireshark | 3.6.0-1 | DEBIAN-CVE-2021-4186 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Wireshark Foundation | Wireshark | >=3.4.0, <3.4.10 |
References
- https://www.wireshark.org/security/wnpa-sec-2021-16.html
- https://gitlab.com/wireshark/wireshark/-/issues/17737
- https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-4186.json
- FEDORA-2022-a3d70b50f0 vendor-advisory
- FEDORA-2022-1daf93c51d vendor-advisory
- FEDORA-2022-30411cb3c4 vendor-advisory
- FEDORA-2022-48b86d586f vendor-advisory
- GLSA-202210-04 vendor-advisory
- https://lists.debian.org/debian-lts-announce/2024/09/msg00049.html