CVSS: 4.3EPSS: 0%CPEs: 101EXPL: 0CVE-2020-9488 – log4j: improper validation of certificate with host mismatch in SMTP appender
https://notcve.org/view.php?id=CVE-2020-9488
27 Apr 2020 — Improper validation of certificate with host mismatch in Apache Log4j SMTP appender. This could allow an SMTPS connection to be intercepted by a man-in-the-middle attack which could leak any log messages sent through that appender. Fixed in Apache Log4j 2.12.3 and 2.13.1 Validación incorrecta del certificado con desajuste de host en el apéndice SMTP de Apache Log4j. Esto podría permitir que una conexión SMTPS fuera interceptada por un ataque de tipo man-in-the-middle que podría filtrar cualquier mensaje de ... • https://issues.apache.org/jira/browse/LOG4J2-2819 • CWE-295: Improper Certificate Validation •
CVSS: 7.5EPSS: 60%CPEs: 38EXPL: 2CVE-2020-1967 – Segmentation fault in SSL_check_chain
https://notcve.org/view.php?id=CVE-2020-1967
21 Apr 2020 — 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 ver... • https://packetstorm.news/files/id/157527 • CWE-476: NULL Pointer Dereference •
CVSS: 5.9EPSS: 5%CPEs: 180EXPL: 0CVE-2019-1559 – 0-byte record padding oracle
https://notcve.org/view.php?id=CVE-2019-1559
26 Feb 2019 — If an application encounters a fatal protocol error and then calls SSL_shutdown() twice (once to send a close_notify, and once to receive one) then OpenSSL can respond differently to the calling application if a 0 byte record is received with invalid padding compared to if a 0 byte record is received with an invalid MAC. If the application then behaves differently based on that in a way that is detectable to the remote peer, then this amounts to a padding oracle that could be used to decrypt data. In order ... • http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00041.html • CWE-203: Observable Discrepancy CWE-325: Missing Cryptographic Step •
CVSS: 7.5EPSS: 60%CPEs: 18EXPL: 4CVE-2017-3730 – Bad (EC)DHE parameters cause a client crash
https://notcve.org/view.php?id=CVE-2017-3730
26 Jan 2017 — In OpenSSL 1.1.0 before 1.1.0d, if a malicious server supplies bad parameters for a DHE or ECDHE key exchange then this can result in the client attempting to dereference a NULL pointer leading to a client crash. This could be exploited in a Denial of Service attack. En OpenSSL versión 1.1.0 anterior a 1.1.0d, si un servidor malicioso suministra parámetros incorrectos para un intercambio de claves DHE o ECDHE, entonces esto puede resultar en que el cliente intente desreferenciar un puntero NULL que conduce ... • https://packetstorm.news/files/id/140804 • CWE-476: NULL Pointer Dereference •