CVE-2020-1967: fallo en OpenSSL
Segmentation fault in SSL_check_chain
Publicada el · Actualizada el
15Vexday Risk Score
Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.
ssvc Trackepss 53%
probabilidad de explotación
53%top 1% de las CVE
explotación observada
noninguna fuente lo reporta
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).
Productos afectados
OpenSSL · OpenSSLCVEs relacionadas — OpenSSL
En el mismo producto, de las más peligrosas a las menos.
CVE-2022-2068CRITICALThe c_rehash script allows command injectionEPSS 95.4%CVE-2022-3786HIGHX.509 Email Address Variable Length Buffer OverflowEPSS 92.5%CVE-2022-3602HIGHX.509 Email Address 4-byte Buffer OverflowEPSS 90.8%CVE-2021-3711—SM2 Decryption Buffer OverflowEPSS 87.8%CVE-2022-1292CRITICALThe c_rehash script allows command injectionEPSS 82.6%CVE-2023-2650MEDIUMPossible DoS translating ASN.1 object identifiersEPSS 75.1%
Referencias
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00004.htmlhttp://lists.opensuse.org/opensuse-security-announce/2020-07/msg00011.htmlhttp://packetstormsecurity.com/files/157527/OpenSSL-signature_algorithms_cert-Denial-Of-Service.htmlhttp://seclists.org/fulldisclosure/2020/May/5https://github.com/irsl/CVE-2020-1967https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=eb563247aef3e83dda7679c43f9649270462e5b1https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44440https://lists.apache.org/thread.html/r66ea9c436da150683432db5fbc8beb8ae01886c6459ac30c2cea7345%40%3Cdev.tomcat.apache.org%3Ehttps://lists.apache.org/thread.html/r94d6ac3f010a38fccf4f432b12180a13fa1cf303559bd805648c9064%40%3Cdev.tomcat.apache.org%3Ehttps://lists.apache.org/thread.html/r9a41e304992ce6aec6585a87842b4f2e692604f5c892c37e3b0587ee%40%3Cdev.tomcat.apache.org%3Ehttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DDHOAATPWJCXRNFMJ2SASDBBNU5RJONY/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EXDDAOWSAIEFQNBHWYE6PPYFV4QXGMCD/