CVSS 3.1
6.5 mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:HCVE-2021-34558
Medium (6.5). EPSS 7.0% chance of exploitation in the next 30 days. Fixed in stdlib 1.15.14, 1.16.6.
The crypto/tls package of Go through 1.16.5 does not properly assert that the type of public key in an X.509 certificate matches the expected type when doing a RSA based key exchange, allowing a malicious TLS server to cause a TLS client to panic.
Severity
- EPSS
- 7.0% chance of exploitation in the next 30 days; higher than 94% of CVEs (scores of 2026-10-31)
- CWE
- CWE-295
- Published
- Modified
- Record from
- the NVD, synced
Affected
- fedoraproject:fedora
- golang:go
- netapp:cloud_insights_telegraf
- netapp:storagegrid
- netapp:trident
- oracle:timesten_in-memory_database
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GO-2021-0243 | Go | stdlib | <1.15.14 >=1.16.0-0 <1.16.6 | 1.15.14, 1.16.6 |
References
- https://golang.org/doc/devel/release#go1.16.minor
- https://groups.google.com/g/golang-announce
- https://groups.google.com/g/golang-announce/c/n9FxMelZGAQ
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3BA7MFVXRBEKRTLSLYDICTYCGEMK2HZ7/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3XBQUFVI5TMV4KMKI7GKA223LHGPQISE/