GHSA-gwc9-m7rh-j2ww

ghsaUSosv

x/crypto/ssh vulnerable to panic via malformed packets

view advisory published 2022-09-07Licence: CC-BY-4.0

The x/crypto/ssh package before 0.0.0-20211202192323-5770296d904e of golang.org/x/crypto allows an unauthenticated attacker to panic an SSH server. When using AES-GCM or ChaCha20Poly1305, consuming a malformed packet which contains an empty plaintext causes a panic.

describes (1)

Related CVEs.

ID	severity	EPSS	exploitable	published
CVE-2021-43565US	high7.5	1.12% (66th)	—	2022-09-06
The x/crypto/ssh package before 0.0.0-20211202192323-5770296d904e of golang.org/x/crypto allows an attacker to panic an SSH server.

references

External citations — patches, advisories, analysis.

https://go.dev/cl/368814WEB
https://go.dev/issues/49932WEB
https://groups.google.com/forum/#!forum/golang-announceWEB
https://groups.google.com/g/golang-announce/c/2AR1sKiM-QsWEB
https://nvd.nist.gov/vuln/detail/CVE-2021-43565ADVISORY
https://pkg.go.dev/vuln/GO-2022-0968WEB

scry

Advisories like this name the exposed products attackers go after on your perimeter. See what is exposed on your perimeter with a free passive scan.

Free scan