high7.5Public exploit code
CVE-2020-9283
Improper Verification of Cryptographic Signature in golang.org/x/crypto
Public exploit code
Working exploit or proof of concept code has been published for this vulnerability. Treat unpatched systems as at risk.
- Go SSH servers 0.0.2 - Denial of Service (PoC)2020-02-24 · dos · linux
Impact
golang.org/x/crypto before v0.0.0-20200220183623-bac4c82f6975 for Go allows a panic during signature verification in the golang.org/x/crypto/ssh package. A client can attack an SSH server that accepts public keys. Also, a server can attack any SSH client.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| go | golang.org/x/crypto | < 0.0.0-20200220183623-bac4c82f6975 | 0.0.0-20200220183623-bac4c82f6975 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Golang | Package Ssh | Version 0.0.0-20200220183623-bac4c82f6975 |
| Debian | Debian Linux | Version 9.0 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- http://packetstormsecurity.com/files/156480/Go-SSH-0.0.2-Denial-Of-Service.html
- https://groups.google.com/forum/#%21topic/golang-announce/3L45YRc91SY
- https://lists.debian.org/debian-lts-announce/2020/10/msg00014.html
- https://lists.debian.org/debian-lts-announce/2020/11/msg00027.html
- https://lists.debian.org/debian-lts-announce/2020/11/msg00031.html
- https://lists.debian.org/debian-lts-announce/2023/06/msg00017.html
- https://github.com/advisories/GHSA-ffhg-7mh4-33c4
- https://nvd.nist.gov/vuln/detail/CVE-2020-9283
- https://github.com/golang/crypto/commit/bac4c82f69751a6dd76e702d54b3ceb88adab236
- https://groups.google.com/forum/#!topic/golang-announce/3L45YRc91SY
- https://www.exploit-db.com/exploits/48121
- https://go.dev/cl/220357
- https://go.googlesource.com/crypto/+/bac4c82f69751a6dd76e702d54b3ceb88adab236
- https://groups.google.com/g/golang-announce/c/3L45YRc91SY
- https://pkg.go.dev/vuln/GO-2020-0012