GHSA-33qr-2xwr-95pw
GitHub Security Advisory
⚠ Unreviewed
HIGH
Has CVE
Advisory Details
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.
Related CVEs
Key Information
7.5
/10
Dataset
Last updated: July 18, 2025 6:27 AM
Data from GitHub Advisory Database. This information is provided for research and educational purposes.