GO-2021-0227

vendorUSosv

Panic on crafted authentication request message in golang.org/x/crypto/ssh

view advisory published 2022-02-17Licence: per source

Clients can cause a panic in SSH servers. An attacker can craft an authentication request message for the “gssapi-with-mic” method which will cause NewServerConn to panic via a nil pointer dereference if ServerConfig.GSSAPIWithMICConfig is nil.

describes (1)

Related CVEs.

ID	severity	EPSS	exploitable	published
CVE-2020-29652US	high7.5	3.18% (88th)	—	2020-12-17
A nil pointer dereference in the golang.org/x/crypto/ssh component through v0.0.0-20201203163018-be400aefbc4c for Go allows remote attackers to cause a denial of service against SS…

references

External citations — patches, advisories, analysis.

https://go.dev/cl/278852FIX
https://go.googlesource.com/crypto/+/8b5274cf687fd9316b4108863654cc57385531e8FIX
https://groups.google.com/g/golang-announce/c/ouZIlBimOsE?pli=1WEB

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