VYPR
← All advisories
Unrated severityNVD Advisory· Published Dec 5, 2023· Updated Feb 13, 2025

Before Go 1.20, the RSA based key exchange methods in crypto/tls may exhibit a timing side channel

CVE-2023-45287

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

42

Patches

Vulnerability mechanics

References

6

News mentions

0

No linked articles in our index yet.