Vulnerability Description
Before Go 1.20, the RSA based TLS key exchanges used the math/big library, which is not constant time. RSA blinding was applied to prevent timing attacks, but analysis shows this may not have been fully effective. In particular it appears as if the removal of PKCS#1 padding may leak timing information, which in turn could be used to recover session key bits. In Go 1.20, the crypto/tls library switched to a fully constant time RSA implementation, which we do not believe exhibits any timing side channels.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Golang | Go | < 1.20.0 |
Related Weaknesses (CWE)
References
- https://go.dev/cl/326012/26Issue Tracking
- https://go.dev/issue/20654Issue Tracking
- https://groups.google.com/g/golang-announce/c/QMK8IQALDvAMailing ListRelease Notes
- https://people.redhat.com/~hkario/marvin/Third Party Advisory
- https://pkg.go.dev/vuln/GO-2023-2375Vendor Advisory
- https://security.netapp.com/advisory/ntap-20240112-0005/
- https://go.dev/cl/326012/26Issue Tracking
- https://go.dev/issue/20654Issue Tracking
- https://groups.google.com/g/golang-announce/c/QMK8IQALDvAMailing ListRelease Notes
- https://people.redhat.com/~hkario/marvin/Third Party Advisory
- https://pkg.go.dev/vuln/GO-2023-2375Vendor Advisory
- https://security.netapp.com/advisory/ntap-20240112-0005/
FAQ
What is CVE-2023-45287?
CVE-2023-45287 is a vulnerability with a CVSS score of 7.5 (HIGH). Before Go 1.20, the RSA based TLS key exchanges used the math/big library, which is not constant time. RSA blinding was applied to prevent timing attacks, but analysis shows this may not have been ful...
How severe is CVE-2023-45287?
CVE-2023-45287 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2023-45287?
Check the references section above for vendor advisories and patch information. Affected products include: Golang Go.