CVSS: 7.5EPSS: 95%CPEs: 18EXPL: 2CVE-2017-3730 – Bad (EC)DHE parameters cause a client crash
https://notcve.org/view.php?id=CVE-2017-3730
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 a un bloqueo del cliente. Esto podría ser explotado en un ataque de denegación de servicio. • https://www.exploit-db.com/exploits/41192 https://github.com/guidovranken/CVE-2017-3730 http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html http://www.securityfocus.com/bid/95812 http://www.securitytracker.com/id/1037717 https://github.com/openssl/openssl/commit/efbe126e3ebb9123ac9d058aa2bb044261342aaa https://security.gentoo.org/glsa/201702-07 https://support.hpe.com/hpsc/doc/public/display?docLocale=en • CWE-476: NULL Pointer Dereference •
CVSS: 7.5EPSS: 73%CPEs: 3EXPL: 0CVE-2016-7053 – CMS Null dereference
https://notcve.org/view.php?id=CVE-2016-7053
In OpenSSL 1.1.0 before 1.1.0c, applications parsing invalid CMS structures can crash with a NULL pointer dereference. This is caused by a bug in the handling of the ASN.1 CHOICE type in OpenSSL 1.1.0 which can result in a NULL value being passed to the structure callback if an attempt is made to free certain invalid encodings. Only CHOICE structures using a callback which do not handle NULL value are affected. En OpenSSL 1.1.0 anterior a 1.1.0c, las aplicaciones que analizan estructuras CMS inválidas pueden dejar de dar servicio por una referencia a puntero nulo. Esto se produce por un fallo en la gestión del tipo ASN.1 CHOICE en OpenSSL 1.1.0, lo que puede derivar en que un valor NULL sea enviado a la devolución de la llamada si se intenta utilizar varias codificaciones inválidas. • http://www.securityfocus.com/bid/94244 http://www.securitytracker.com/id/1037261 https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03744en_us https://www.openssl.org/news/secadv/20161110.txt • CWE-476: NULL Pointer Dereference •
CVSS: 5.9EPSS: 0%CPEs: 7EXPL: 0CVE-2016-7055 – openssl: Carry propagating bug in Montgomery multiplication
https://notcve.org/view.php?id=CVE-2016-7055
There is a carry propagating bug in the Broadwell-specific Montgomery multiplication procedure in OpenSSL 1.0.2 and 1.1.0 before 1.1.0c that handles input lengths divisible by, but longer than 256 bits. Analysis suggests that attacks against RSA, DSA and DH private keys are impossible. This is because the subroutine in question is not used in operations with the private key itself and an input of the attacker's direct choice. Otherwise the bug can manifest itself as transient authentication and key negotiation failures or reproducible erroneous outcome of public-key operations with specially crafted input. Among EC algorithms only Brainpool P-512 curves are affected and one presumably can attack ECDH key negotiation. • http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html http://www.oracle.com/technetwork/security-advisory/cpujul2017-3236622.html http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html http://www.securityfocus.com/bid/94242 http://www.securitytracker.com/id/1037261 https://access.redhat.com/errata/RHSA-2018:2185 https://access.redhat.com/errata/RHSA-2018:2186 https://access.redhat.com/errata/RHSA-2018:2187 https://h20566.www2.hpe.com/hpsc/doc/public • CWE-682: Incorrect Calculation •
CVSS: 7.5EPSS: 88%CPEs: 3EXPL: 1CVE-2016-7054 – ChaCha20/Poly1305 heap-buffer-overflow
https://notcve.org/view.php?id=CVE-2016-7054
In OpenSSL 1.1.0 before 1.1.0c, TLS connections using *-CHACHA20-POLY1305 ciphersuites are susceptible to a DoS attack by corrupting larger payloads. This can result in an OpenSSL crash. This issue is not considered to be exploitable beyond a DoS. En OpenSSL 1.1.0 anterior a 1.1.0c, las conexiones TLS que utilizan *-CHACHA20-POLY1305 ciphersuites pueden ser víctimas de una denegación de servicio si se corrompe el payload. Esto puede derivar la caída de OpenSSL. • https://www.exploit-db.com/exploits/40899 http://www.securityfocus.com/bid/94238 http://www.securitytracker.com/id/1037261 https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03744en_us https://www.openssl.org/news/secadv/20161110.txt • CWE-284: Improper Access Control •
CVSS: 10.0EPSS: 91%CPEs: 1EXPL: 0CVE-2016-6309
https://notcve.org/view.php?id=CVE-2016-6309
statem/statem.c in OpenSSL 1.1.0a does not consider memory-block movement after a realloc call, which allows remote attackers to cause a denial of service (use-after-free) or possibly execute arbitrary code via a crafted TLS session. statem/statem.c en OpenSSL 1.1.0a no considera el movimiento de bloque de memoria después de una llamada realloc, lo que permite a atacantes remotos provocar una denegación de servicio (uso después de liberación de memoria) o posiblemente ejecutar código arbitrario a través de una sesión TLS manipulada. • http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10759 http://www-01.ibm.com/support/docview.wss?uid=swg21995039 http://www.oracle.com/technetwork/security-advisory/cpuapr2018-3678067.html http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html http://www.oracle.com/technetwork/security-advisory/cpujul2017-3236622.html http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html http://www.securityfocus.com/bid/93177 http://www.securitytracker.com/id/1036885 https • CWE-416: Use After Free •