CVSS 3.1 Score 5.3 of 10 (medium)


Published Aug 2, 2023
Updated: Nov 25, 2023
CWE ID 400


CVE-2023-29409 is a cyber vulnerability that affects multiple products, including d5jgGL, d5jgGK, d5jgGN, and others. It is caused by extremely large RSA keys in certificate chains, leading to significant CPU usage during signature verification. The issue has been addressed by restricting the size of RSA keys transmitted during handshakes to <= 8192 bits. Currently, there are only three certificates with larger keys in circulation, but they are test certificates not actively deployed. While there might be larger keys in use in private PKIs, the focus is on the web PKI to enhance default safety for users of crypto/tls. The vulnerability has a risk score of 34 and a base severity rating of MEDIUM.

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