Vulnerability · Published Feb 20, 2020 · Assigned by mitre
CVE-2020-9283
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 21.1% (higher than 98% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code. Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)7.5High
Exploit odds (30 days)21.1%top 2.4% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack tooling1Public PoC
Official description
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 & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | golang-go.crypto | 1:0.0~git20200221.2aa609c-1 | DEBIAN-CVE-2020-9283 |
| Debian:13 | golang-go.crypto | 1:0.0~git20200221.2aa609c-1 | DEBIAN-CVE-2020-9283 |
| Debian:14 | golang-go.crypto | 1:0.0~git20200221.2aa609c-1 | DEBIAN-CVE-2020-9283 |
| Go | golang.org/x/crypto | 0.0.0-20200220183623-bac4c82f6975 | GHSA-ffhg-7mh4-33c4 |
| Go | golang.org/x/crypto | 0.0.0-20200220183623-bac4c82f6975 | GO-2020-0012 |
Affected products (as reported)
References
- https://groups.google.com/forum/#%21topic/golang-announce/3L45YRc91SY
- http://packetstormsecurity.com/files/156480/Go-SSH-0.0.2-Denial-Of-Service.html
- [debian-lts-announce] 20201007 [SECURITY] [DLA 2402-1] golang-go.crypto security update mailing-list
- [debian-lts-announce] 20201116 [SECURITY] [DLA 2453-1] restic security update mailing-list
- [debian-lts-announce] 20201118 [SECURITY] [DLA 2455-1] packer security update mailing-list
- [debian-lts-announce] 20230616 [SECURITY] [DLA 3455-1] golang-go.crypto security update mailing-list