CVE-2023-45287

A flaw was found in the Golang crypto/tls standard library. In previous versions, the package was vulnerable to a Timing Side Channel attack by observing the time it took for RSA-based TLS key exchanges, which was not constant. This flaw allows a malicious user to gather information from the environment.

The identified flaw in the Golang crypto/tls library, is assessed as a moderate severity issue rather than important due to several mitigating factors. Although the vulnerability exposes a Timing Side Channel, potentially allowing information retrieval through RSA-based TLS key exchanges, its exploitation demands significant access and expertise. Additionally, while earlier versions implemented RSA blinding to counter timing attacks, the removal of PKCS#1 padding may still leak timing data. However, the practicality of exploiting this flaw is limited, and the transition to a fully constant time RSA implementation in Go 1.20 significantly bolsters security, reducing the risk posed by timing side channels.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

No current mitigation is available for this vulnerability.