Server or client applications that call the SSL_check_chain() function during or after a TLS 1.3 handshake may crash due to a NULL pointer dereference as a result of incorrect handling of the "signature_algorithms_cert" TLS extension. The crash occurs if an invalid or unrecognised signature algorithm is received from the peer. This could be exploited by a malicious peer in a Denial of Service attack. OpenSSL version 1.1.1d, 1.1.1e, and 1.1.1f are affected by this issue. This issue did not affect OpenSSL versions prior to 1.1.1d. Fixed in OpenSSL 1.1.1g (Affected 1.1.1d-1.1.1f).
Metrics
Affected Vendors & Products
References
History
No history.
MITRE
Status: PUBLISHED
Assigner: openssl
Published: 2020-04-21T13:45:15.136203Z
Updated: 2024-09-17T03:13:46.200Z
Reserved: 2019-12-03T00:00:00
Link: CVE-2020-1967
Vulnrichment
No data.
NVD
Status : Modified
Published: 2020-04-21T14:15:11.287
Modified: 2024-11-21T05:11:45.023
Link: CVE-2020-1967
Redhat