Vulnerability · Published Sep 6, 2022 · Assigned by mitre
CVE-2021-43565
High 7.5
In plain English
A high-severity security flaw in the golang-go.crypto package (Debian). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.2% (higher than 68% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)7.5High
Exploit odds (30 days)1.2%top 31.9% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
The x/crypto/ssh package before 0.0.0-20211202192323-5770296d904e of golang.org/x/crypto allows an attacker to panic an SSH server.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | golang-go.crypto | 1:0.0~git20211202.5770296-1 | DEBIAN-CVE-2021-43565 |
| Debian:13 | golang-go.crypto | 1:0.0~git20211202.5770296-1 | DEBIAN-CVE-2021-43565 |
| Debian:14 | golang-go.crypto | 1:0.0~git20211202.5770296-1 | DEBIAN-CVE-2021-43565 |
| Go | golang.org/x/crypto | 0.0.0-20211202192323-5770296d904e | GO-2022-0968 |
| Go | golang.org/x/crypto | 0.0.0-20211202192323-5770296d904e | GHSA-gwc9-m7rh-j2ww |
| Ubuntu:25.10 | golang-go.crypto | no fix listed | UBUNTU-CVE-2021-43565 |
| Ubuntu:26.10 | golang-go.crypto | no fix listed | UBUNTU-CVE-2021-43565 |
Affected products (as reported)
References
- https://groups.google.com/forum/#%21forum/golang-announce x_refsource_MISC
- https://groups.google.com/g/golang-announce/c/2AR1sKiM-Qs x_refsource_CONFIRM