CVSS: 6.8EPSS: 39%CPEs: 45EXPL: 0CVE-2015-1791 – OpenSSL: Race condition handling NewSessionTicket
https://notcve.org/view.php?id=CVE-2015-1791
Race condition in the ssl3_get_new_session_ticket function in ssl/s3_clnt.c in OpenSSL before 0.9.8zg, 1.0.0 before 1.0.0s, 1.0.1 before 1.0.1n, and 1.0.2 before 1.0.2b, when used for a multi-threaded client, allows remote attackers to cause a denial of service (double free and application crash) or possibly have unspecified other impact by providing a NewSessionTicket during an attempt to reuse a ticket that had been obtained earlier. Condición de carrera en la función ssl3_get_new_session_ticket en ssl/s3_clnt.c en OpenSSL anterior a 0.9.8zg, 1.0.0 anterior a 1.0.0s, 1.0.1 anterior a 1.0.1n, y 1.0.2 anterior a 1.0.2b, cuando utilizado para un cliente multi-hilo, permite a atacantes remotos causar una denegación de servicio (liberación doble y caída de aplicación) o posiblemente tener otro impacto no especificado mediante la provisión de un NewSessionTicket durante un intento de reutilizar un ticket que se había conseguido anteriormente. A race condition was found in the session handling code of OpenSSL. This issue could possibly cause a multi-threaded TLS/SSL client using OpenSSL to double free session ticket data and crash. • http://fortiguard.com/advisory/openssl-vulnerabilities-june-2015 http://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2015-008.txt.asc http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10694 http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10733 http://lists.apple.com/archives/security-announce/2015/Aug/msg00001.html http://lists.fedoraproject.org/pipermail/package-announce/2015-June/160436.html http://lists.fedoraproject.org/pipermail/package-announce/2015-June/160647.html http& • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') •
CVSS: 5.0EPSS: 43%CPEs: 45EXPL: 0CVE-2015-1790 – OpenSSL: PKCS7 crash with missing EnvelopedContent
https://notcve.org/view.php?id=CVE-2015-1790
The PKCS7_dataDecodefunction in crypto/pkcs7/pk7_doit.c in OpenSSL before 0.9.8zg, 1.0.0 before 1.0.0s, 1.0.1 before 1.0.1n, and 1.0.2 before 1.0.2b allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via a PKCS#7 blob that uses ASN.1 encoding and lacks inner EncryptedContent data. La función PKCS7_dataDecode en crypto/pkcs7/pk7_doit.c en OpenSSL anterior a 0.9.8zg, 1.0.0 anterior a 1.0.0s, 1.0.1 anterior a 1.0.1n, y 1.0.2 anterior a 1.0.2b permite a atacantes remotos causar una denegación de servicio (referencia a puntero nulo y caída de aplicación) a través de un blob PKCS#7 que utiliza la codificación ASN.1 y al que le faltan datos EncryptedContent internos. A NULL pointer dereference was found in the way OpenSSL handled certain PKCS#7 inputs. An attacker able to make an application using OpenSSL verify, decrypt, or parse a specially crafted PKCS#7 input could cause that application to crash. TLS/SSL clients and servers using OpenSSL were not affected by this flaw. • http://fortiguard.com/advisory/openssl-vulnerabilities-june-2015 http://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2015-008.txt.asc http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10694 http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10733 http://lists.apple.com/archives/security-announce/2015/Aug/msg00001.html http://lists.fedoraproject.org/pipermail/package-announce/2015-June/160436.html http://lists.fedoraproject.org/pipermail/package-announce/2015-June/160647.html http& •
CVSS: 7.5EPSS: 29%CPEs: 46EXPL: 0CVE-2015-1789 – OpenSSL: out-of-bounds read in X509_cmp_time
https://notcve.org/view.php?id=CVE-2015-1789
The X509_cmp_time function in crypto/x509/x509_vfy.c in OpenSSL before 0.9.8zg, 1.0.0 before 1.0.0s, 1.0.1 before 1.0.1n, and 1.0.2 before 1.0.2b allows remote attackers to cause a denial of service (out-of-bounds read and application crash) via a crafted length field in ASN1_TIME data, as demonstrated by an attack against a server that supports client authentication with a custom verification callback. La función X509_cmp_time en crypto/x509/x509_vfy.c en OpenSSL anterior a 0.9.8zg, 1.0.0 anterior a 1.0.0s, 1.0.1 anterior a 1.0.1n, y 1.0.2 anterior a 1.0.2b permite a atacantes remotos causar una denegación de servicio (lectura fuera de rango y caída de aplicación) a través de un campo de longitud manipulado en datos ASN1_TIME, tal y como fue demostrado mediante un ataque sobre un servidor que soporta la autenticación de clientes con una rellamada de verificación personalizada. An out-of-bounds read flaw was found in the X509_cmp_time() function of OpenSSL, which is used to test the expiry dates of SSL/TLS certificates. An attacker could possibly use a specially crafted SSL/TLS certificate or CRL (Certificate Revocation List), which when parsed by an application would cause that application to crash. • http://fortiguard.com/advisory/openssl-vulnerabilities-june-2015 http://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2015-008.txt.asc http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10694 http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10733 http://lists.apple.com/archives/security-announce/2015/Aug/msg00001.html http://lists.fedoraproject.org/pipermail/package-announce/2015-June/160436.html http://lists.fedoraproject.org/pipermail/package-announce/2015-June/160647.html http& • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer CWE-125: Out-of-bounds Read •
CVSS: 4.3EPSS: 56%CPEs: 45EXPL: 0CVE-2015-1788
https://notcve.org/view.php?id=CVE-2015-1788
The BN_GF2m_mod_inv function in crypto/bn/bn_gf2m.c in OpenSSL before 0.9.8s, 1.0.0 before 1.0.0e, 1.0.1 before 1.0.1n, and 1.0.2 before 1.0.2b does not properly handle ECParameters structures in which the curve is over a malformed binary polynomial field, which allows remote attackers to cause a denial of service (infinite loop) via a session that uses an Elliptic Curve algorithm, as demonstrated by an attack against a server that supports client authentication. La función BN_GF2m_mod_inv en crypto/bn/bn_gf2m.c en OpenSSL anterior a 0.9.8s, 1.0.0 anterior a 1.0.0e, 1.0.1 anterior a 1.0.1n, y 1.0.2 anterior a 1.0.2b no maneja correctamente las estructuras ECParameters en las cuales la curva está por un campo polinomio binario malformado, lo que permite a atacantes remotos causar una denegación de servicio (bucle infinito) a través de una sesión que utiliza un algoritmo Elliptic Curve, tal y como fue demostrado mediante un ataque sobre un servidor que soporta la autenticación de clientes. • http://fortiguard.com/advisory/2015-07-09-cve-2015-1793-openssl-alternative-chains-certificate-forgery http://fortiguard.com/advisory/openssl-vulnerabilities-june-2015 http://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2015-008.txt.asc http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10694 http://lists.apple.com/archives/security-announce/2015/Aug/msg00001.html http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00023.html http://lists.opensuse.org/opensuse-security-announce&#x • CWE-399: Resource Management Errors •
CVSS: 4.3EPSS: 97%CPEs: 42EXPL: 0CVE-2015-4000 – LOGJAM: TLS connections which support export grade DHE key-exchange are vulnerable to MITM attacks
https://notcve.org/view.php?id=CVE-2015-4000
The TLS protocol 1.2 and earlier, when a DHE_EXPORT ciphersuite is enabled on a server but not on a client, does not properly convey a DHE_EXPORT choice, which allows man-in-the-middle attackers to conduct cipher-downgrade attacks by rewriting a ClientHello with DHE replaced by DHE_EXPORT and then rewriting a ServerHello with DHE_EXPORT replaced by DHE, aka the "Logjam" issue. El protocolo TLS 1.2 y anteriores, cuando una suite de cifrado DHE_EXPORT está habilitada en un servidor pero no en un cliente, no transporta una elección DHE_EXPORT, lo que permite a atacantes man-in-the-middle realizar ataques de degradación del cifrado mediante la rescritura de un ClientHello con DHE remplazado por DHE_EXPORT y posteriormente la rescritura de un ServerHello con DHE_EXPORT remplazado por DHE, también conocido como el problema 'Logjam'. A flaw was found in the way the TLS protocol composes the Diffie-Hellman exchange (for both export and non-export grade cipher suites). An attacker could use this flaw to downgrade a DHE connection to use export-grade key sizes, which could then be broken by sufficient pre-computation. This can lead to a passive man-in-the-middle attack in which the attacker is able to decrypt all traffic. • http://aix.software.ibm.com/aix/efixes/security/sendmail_advisory2.asc http://fortiguard.com/advisory/2015-07-09-cve-2015-1793-openssl-alternative-chains-certificate-forgery http://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2015-008.txt.asc http://h20564.www2.hpe.com/hpsc/doc/public/display?docId=emr_na-c04876402 http://h20564.www2.hpe.com/hpsc/doc/public/display?docId=emr_na-c04949778 http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10681 http://kb.juniper.net/InfoC • CWE-310: Cryptographic Issues CWE-327: Use of a Broken or Risky Cryptographic Algorithm •