Vulnerability · Published Dec 11, 2020 · Assigned by GitLab
CVE-2020-26421
Medium 4.2
In plain English
A medium-severity security flaw in Wireshark from The Wireshark Foundation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.5% (higher than 85% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)4.2Medium
Exploit odds (30 days)2.5%top 14.9% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
Crash in USB HID protocol dissector and possibly other dissectors in Wireshark 3.4.0 and 3.2.0 to 3.2.8 allows denial of service via packet injection or crafted capture file.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.20 | wireshark | 3.4.1-r0 | ALPINE-CVE-2020-26421 |
| Alpine:v3.21 | wireshark | 3.4.1-r0 | ALPINE-CVE-2020-26421 |
| Alpine:v3.22 | wireshark | 3.4.1-r0 | ALPINE-CVE-2020-26421 |
| Alpine:v3.23 | wireshark | 3.4.1-r0 | ALPINE-CVE-2020-26421 |
| Alpine:v3.24 | wireshark | 3.4.1-r0 | ALPINE-CVE-2020-26421 |
| Debian:12 | wireshark | 3.4.1-1 | DEBIAN-CVE-2020-26421 |
| Debian:13 | wireshark | 3.4.1-1 | DEBIAN-CVE-2020-26421 |
| Debian:14 | wireshark | 3.4.1-1 | DEBIAN-CVE-2020-26421 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| The Wireshark Foundation | Wireshark | 3.4.0>= 3.2.0 to < 3.2.9 |
References
- https://www.wireshark.org/security/wnpa-sec-2020-17.html x_refsource_MISC
- https://gitlab.com/wireshark/wireshark/-/issues/16958 x_refsource_MISC
- https://gitlab.com/gitlab-org/cves/-/blob/master/2020/CVE-2020-26421.json x_refsource_CONFIRM
- GLSA-202101-12 vendor-advisory, x_refsource_GENTOO
- [debian-lts-announce] 20210206 [SECURITY] [DLA 2547-1] wireshark security update mailing-list, x_refsource_MLIST
- FEDORA-2021-f3011da665 vendor-advisory, x_refsource_FEDORA
- FEDORA-2021-138674557c vendor-advisory, x_refsource_FEDORA
- https://www.oracle.com/security-alerts/cpuApr2021.html x_refsource_MISC