CVSS: 7.5EPSS: 8%CPEs: 38EXPL: 1CVE-2020-1967 – Segmentation fault in SSL_check_chain
https://notcve.org/view.php?id=CVE-2020-1967
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. • https://github.com/irsl/CVE-2020-1967 http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00004.html http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00011.html http://packetstormsecurity.com/files/157527/OpenSSL-signature_algorithms_cert-Denial-Of-Service.html http://seclists.org/fulldisclosure/2020/May/5 http://www.openwall.com/lists/oss-security/2020/04/22/2 https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=eb563247aef3e83dda7679c43f9649270462e5b1 https:/&# • CWE-476: NULL Pointer Dereference •
CVSS: 9.1EPSS: 0%CPEs: 1EXPL: 0CVE-2020-9432
https://notcve.org/view.php?id=CVE-2020-9432
openssl_x509_check_host in lua-openssl 0.7.7-1 mishandles X.509 certificate validation because it uses lua_pushboolean for certain non-boolean return values. openssl_x509_check_host en lua-openssl versión 0.7.7-1, maneja inapropiadamente la comprobación del certificado X.509 porque usa lua_pushboolean para determinados valores de retorno no booleanos. • https://github.com/zhaozg/lua-openssl/commit/a6dc186dd4b6b9e329a93cca3e7e3cfccfdf3cca • CWE-295: Improper Certificate Validation •
CVSS: 9.1EPSS: 0%CPEs: 1EXPL: 0CVE-2020-9433
https://notcve.org/view.php?id=CVE-2020-9433
openssl_x509_check_email in lua-openssl 0.7.7-1 mishandles X.509 certificate validation because it uses lua_pushboolean for certain non-boolean return values. openssl_x509_check_email en lua-openssl versión 0.7.7-1, maneja inapropiadamente la comprobación del certificado X.509 porque usa lua_pushboolean para determinados valores de retorno no booleanos. • https://github.com/zhaozg/lua-openssl/commit/a6dc186dd4b6b9e329a93cca3e7e3cfccfdf3cca • CWE-295: Improper Certificate Validation •
CVSS: 9.1EPSS: 0%CPEs: 1EXPL: 0CVE-2020-9434
https://notcve.org/view.php?id=CVE-2020-9434
openssl_x509_check_ip_asc in lua-openssl 0.7.7-1 mishandles X.509 certificate validation because it uses lua_pushboolean for certain non-boolean return values. openssl_x509_check_ip_asc en lua-openssl versión 0.7.7-1, maneja inapropiadamente la comprobación del certificado X.509 porque usa lua_pushboolean para determinados valores de retorno no booleanos. • https://github.com/zhaozg/lua-openssl/commit/a6dc186dd4b6b9e329a93cca3e7e3cfccfdf3cca • CWE-295: Improper Certificate Validation •
CVSS: 9.1EPSS: 0%CPEs: 7EXPL: 0CVE-2020-7043
https://notcve.org/view.php?id=CVE-2020-7043
An issue was discovered in openfortivpn 1.11.0 when used with OpenSSL before 1.0.2. tunnel.c mishandles certificate validation because hostname comparisons do not consider '\0' characters, as demonstrated by a good.example.com\x00evil.example.com attack. Se detectó un problema en openfortivpn versión 1.11.0, cuando se usaba con OpenSSL versiones anteriores a 1.0.2. en el archivo tunnel.c maneja inapropiadamente la comprobación del certificado porque las comparaciones hostname no consideran los caracteres "\0", como es demostrado por un ataque de good.example.com\x00evil.example.com. • http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00009.html http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00011.html https://github.com/adrienverge/openfortivpn/commit/6328a070ddaab16faaf008cb9a8a62439c30f2a8 https://github.com/adrienverge/openfortivpn/commit/cd9368c6a1b4ef91d77bb3fdbe2e5bc34aa6f4c4 https://github.com/adrienverge/openfortivpn/issues/536 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CKNKSGBVYGRRVRLFEFBEKUEJYJR5LWOF https://lists.fedoraproject.org/archives/l • CWE-295: Improper Certificate Validation •