high7.5
CVE-2020-29652
golang.org/x/crypto/ssh NULL Pointer Dereference vulnerability
Impact
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 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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| go | golang.org/x/crypto | < 0.0.0-20201216223049-8b5274cf687f | 0.0.0-20201216223049-8b5274cf687f |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Golang | Ssh | through 0.0.0-20201203163018-be400aefbc4c |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://go-review.googlesource.com/c/crypto/+/278852
- https://groups.google.com/g/golang-announce/c/ouZIlBimOsE?pli=1
- https://lists.apache.org/thread.html/r68032132c0399c29d6cdc7bd44918535da54060a10a12b1591328bff%40%3Cnotifications.skywalking.apache.org%3E
- https://github.com/advisories/GHSA-3vm4-22fp-5rfm
- https://nvd.nist.gov/vuln/detail/CVE-2020-29652
- https://lists.apache.org/thread.html/r68032132c0399c29d6cdc7bd44918535da54060a10a12b1591328bff@%3Cnotifications.skywalking.apache.org%3E
- https://go.dev/cl/278852
- https://go.googlesource.com/crypto/+/8b5274cf687fd9316b4108863654cc57385531e8
- https://pkg.go.dev/vuln/GO-2021-0227