CVE-2020-1967 log

Source
Severity High
Remote Yes
Type Denial of service
Description
A NULL pointer dereference has been found in OpenSSL versions 1.1.1d, 1.1.1e and 1.1.1f. 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.
Group Package Affected Fixed Severity Status Ticket
AVG-1142 lib32-openssl 1.1.1.f-1 1.1.1.g-1 High Fixed
AVG-1139 openssl 1.1.1.f-1 1.1.1.g-1 High Fixed
Date Advisory Group Package Severity Description
22 Apr 2020 ASA-202004-19 AVG-1142 lib32-openssl High denial of service
21 Apr 2020 ASA-202004-18 AVG-1139 openssl High denial of service
References
https://www.openssl.org/news/secadv/20200421.txt
https://github.com/openssl/openssl/commit/eb563247aef3e83dda7679c43f9649270462e5b1