CVSS: 10.0EPSS: 6%CPEs: 61EXPL: 0CVE-2016-0705 – OpenSSL: Double-free in DSA code
https://notcve.org/view.php?id=CVE-2016-0705
Double free vulnerability in the dsa_priv_decode function in crypto/dsa/dsa_ameth.c in OpenSSL 1.0.1 before 1.0.1s and 1.0.2 before 1.0.2g allows remote attackers to cause a denial of service (memory corruption) or possibly have unspecified other impact via a malformed DSA private key. Vulnerabilidad de liberación doble en la función dsa_priv_decode en crypto/dsa/dsa_ameth.c en OpenSSL 1.0.1 en versiones anteriores a 1.0.1s y 1.0.2 en versiones anteriores a 1.0.2g permite a atacantes remotos causar una denegación de servicio (corrupción de memoria) o posiblemente tener otro impacto no especificado a través de una clave DSA privada malformada. A double-free flaw was found in the way OpenSSL parsed certain malformed DSA (Digital Signature Algorithm) private keys. An attacker could create specially crafted DSA private keys that, when processed by an application compiled against OpenSSL, could cause the application to crash. • http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10759 http://lists.fedoraproject.org/pipermail/package-announce/2016-March/178358.html http://lists.fedoraproject.org/pipermail/package-announce/2016-March/178817.html http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00001.html http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00002.html http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00003.html http://lists.opensuse.org/opensuse-security-announce/2016-03/ •
CVSS: 5.1EPSS: 0%CPEs: 40EXPL: 0CVE-2016-0702 – OpenSSL: Side channel attack on modular exponentiation
https://notcve.org/view.php?id=CVE-2016-0702
The MOD_EXP_CTIME_COPY_FROM_PREBUF function in crypto/bn/bn_exp.c in OpenSSL 1.0.1 before 1.0.1s and 1.0.2 before 1.0.2g does not properly consider cache-bank access times during modular exponentiation, which makes it easier for local users to discover RSA keys by running a crafted application on the same Intel Sandy Bridge CPU core as a victim and leveraging cache-bank conflicts, aka a "CacheBleed" attack. La función MOD_EXP_CTIME_COPY_FROM_PREBUF en crypto/bn/bn_exp.c en OpenSSL 1.0.1 en versiones anteriores a 1.0.1s y 1.0.2 en versiones anteriores a 1.0.2g no considera correctamente las veces que se accede al cache-bank durante la exponenciación modular, lo que facilita a usuarios locales descubrir las claves RSA ejecutando una aplicación manipulada en el mismo núcleo de la CPU Intel Sandy Bridge como víctima y aprovechándose de los conflictos del cache-bank, también conocida como un ataque "CacheBleed". A side-channel attack was found that makes use of cache-bank conflicts on the Intel Sandy-Bridge microarchitecture. An attacker who has the ability to control code in a thread running on the same hyper-threaded core as the victim's thread that is performing decryption, could use this flaw to recover RSA private keys. • http://cachebleed.info http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10759 http://lists.fedoraproject.org/pipermail/package-announce/2016-March/178358.html http://lists.fedoraproject.org/pipermail/package-announce/2016-March/178817.html http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00001.html http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00002.html http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00003.html http://lists.opensuse.org/opensuse- • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •
CVSS: 5.9EPSS: 0%CPEs: 44EXPL: 0CVE-2016-0703 – openssl: Divide-and-conquer session key recovery in SSLv2
https://notcve.org/view.php?id=CVE-2016-0703
The get_client_master_key function in s2_srvr.c in the SSLv2 implementation in OpenSSL before 0.9.8zf, 1.0.0 before 1.0.0r, 1.0.1 before 1.0.1m, and 1.0.2 before 1.0.2a accepts a nonzero CLIENT-MASTER-KEY CLEAR-KEY-LENGTH value for an arbitrary cipher, which allows man-in-the-middle attackers to determine the MASTER-KEY value and decrypt TLS ciphertext data by leveraging a Bleichenbacher RSA padding oracle, a related issue to CVE-2016-0800. La función get_client_master_key en s2_srvr.c en la implementación de SSLv2 en OpenSSL en versiones anteriores a 0.9.8zf, 1.0.0 en versiones anteriores a 1.0.0r, 1.0.1 en versiones anteriores a 1.0.1m y 1.0.2 en versiones anteriores a 1.0.2a acepta un valor CLIENT-MASTER-KEY CLEAR-KEY-LENGTH distinto de cero para un cifrado arbitrario, lo que permite a atacantes man-in-the-middle determinar el valor MASTER-KEY y descifrar datos de texto cifrados con TLS aprovechándose de un Bleichenbacher RSA padding oracle, un caso relacionado con CVE-2016-0800. It was discovered that the SSLv2 servers using OpenSSL accepted SSLv2 connection handshakes that indicated non-zero clear key length for non-export cipher suites. An attacker could use this flaw to decrypt recorded SSLv2 sessions with the server by using it as a decryption oracle. • http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10759 http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00001.html http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00002.html http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00003.html http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00004.html http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00006.html http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00007.h • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •
CVSS: 5.9EPSS: 1%CPEs: 44EXPL: 0CVE-2016-0704 – openssl: SSLv2 Bleichenbacher protection overwrites wrong bytes for export ciphers
https://notcve.org/view.php?id=CVE-2016-0704
An oracle protection mechanism in the get_client_master_key function in s2_srvr.c in the SSLv2 implementation in OpenSSL before 0.9.8zf, 1.0.0 before 1.0.0r, 1.0.1 before 1.0.1m, and 1.0.2 before 1.0.2a overwrites incorrect MASTER-KEY bytes during use of export cipher suites, which makes it easier for remote attackers to decrypt TLS ciphertext data by leveraging a Bleichenbacher RSA padding oracle, a related issue to CVE-2016-0800. Un mecanismo de protección oracle en la función get_client_master_key en s2_srvr.c en la implementación de SSLv2 en OpenSSL en versiones anteriores a 0.9.8zf, 1.0.0 en versiones anteriores a 1.0.0r, 1.0.1 en versiones anteriores a 1.0.1m y 1.0.2 en versiones anteriores a 1.0.2a sobrescribe MASTER-KEY bytes incorrectos durante el uso de suites de cifrado de exportación, lo que facilita a atacantes remotos el descifrado de datos de texto cifrados con TLS aprovechándose de un Bleichenbacher RSA padding oracle, un caso relacionado con CVE-2016-0800. It was discovered that the SSLv2 protocol implementation in OpenSSL did not properly implement the Bleichenbacher protection for export cipher suites. An attacker could use a SSLv2 server using OpenSSL as a Bleichenbacher oracle. • http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10759 http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00001.html http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00002.html http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00003.html http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00004.html http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00006.html http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00007.h • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •
CVSS: 7.5EPSS: 6%CPEs: 40EXPL: 0CVE-2016-0797 – OpenSSL: BN_hex2bn/BN_dec2bn NULL pointer deref/heap corruption
https://notcve.org/view.php?id=CVE-2016-0797
Multiple integer overflows in OpenSSL 1.0.1 before 1.0.1s and 1.0.2 before 1.0.2g allow remote attackers to cause a denial of service (heap memory corruption or NULL pointer dereference) or possibly have unspecified other impact via a long digit string that is mishandled by the (1) BN_dec2bn or (2) BN_hex2bn function, related to crypto/bn/bn.h and crypto/bn/bn_print.c. Múltiples desbordamientos de entero en OpenSSL 1.0.1 en versiones anteriores a 1.0.1s y 1.0.2 en versiones anteriores a 1.0.2g permiten a atacantes remotos causar una denegación de servicio (corrupción de memoria dinámica o referencia a puntero NULL) o posiblemente tener otro impacto no especificado a través de una cadena de dígitos de gran tamaño que no es manejada correctamente por la función (1) BN_dec2bn o (2) BN_hex2bn, relacionada con crypto/bn/bn.h y crypto/bn/bn_print.c. An integer overflow flaw, leading to a NULL pointer dereference or a heap-based memory corruption, was found in the way some BIGNUM functions of OpenSSL were implemented. Applications that use these functions with large untrusted input could crash or, potentially, execute arbitrary code. • http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10759 http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00001.html http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00002.html http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00003.html http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00004.html http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00005.html http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00006.h •