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CVSS: 5.3EPSS: 0%CPEs: 146EXPL: 0

An issue was discovered in Asterisk Open Source 11.x before 11.25.1, 13.x before 13.13.1, and 14.x before 14.2.1 and Certified Asterisk 11.x before 11.6-cert16 and 13.x before 13.8-cert4. The chan_sip channel driver has a liberal definition for whitespace when attempting to strip the content between a SIP header name and a colon character. Rather than following RFC 3261 and stripping only spaces and horizontal tabs, Asterisk treats any non-printable ASCII character as if it were whitespace. This means that headers such as Contact\x01: will be seen as a valid Contact header. This mostly does not pose a problem until Asterisk is placed in tandem with an authenticating SIP proxy. • http://downloads.asterisk.org/pub/security/AST-2016-009.html http://www.securityfocus.com/bid/94789 http://www.securitytracker.com/id/1037408 • CWE-285: Improper Authorization •

CVSS: 7.5EPSS: 1%CPEs: 9EXPL: 0

An issue was discovered in Asterisk Open Source 13.12.x and 13.13.x before 13.13.1 and 14.x before 14.2.1. If an SDP offer or answer is received with the Opus codec and with the format parameters separated using a space the code responsible for parsing will recursively call itself until it crashes. This occurs as the code does not properly handle spaces separating the parameters. This does NOT require the endpoint to have Opus configured in Asterisk. This also does not require the endpoint to be authenticated. • http://downloads.asterisk.org/pub/security/AST-2016-008-13.diff http://downloads.asterisk.org/pub/security/AST-2016-008-14.diff http://downloads.asterisk.org/pub/security/AST-2016-008.html http://www.securityfocus.com/bid/94792 http://www.securitytracker.com/id/1037407 https://issues.asterisk.org/jira/browse/ASTERISK-26579 • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •

CVSS: 7.5EPSS: 4%CPEs: 113EXPL: 0

chain_sip in Asterisk Open Source 11.x before 11.23.1 and 13.x 13.11.1 and Certified Asterisk 11.6 before 11.6-cert15 and 13.8 before 13.8-cert3 allows remote attackers to cause a denial of service (port exhaustion). chain_sip en Asterisk Open Source 11.x en versiones anteriores a 11.23.1 y 13.x 13.11.1 y Certified Asterisk 11.6 en versiones anteriores a 11.6-cert15 y 13.8 en versiones anteriores a 13.8-cert3 permite a atacantes remotos provocar una denegación de servicio (agotamiento portuario) • http://downloads.asterisk.org/pub/security/AST-2016-007.html http://www.debian.org/security/2016/dsa-3700 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=838832 https://bugzilla.redhat.com/show_bug.cgi?id=1374733 https://issues.asterisk.org/jira/browse/ASTERISK-26272 • CWE-399: Resource Management Errors •

CVSS: 6.5EPSS: 0%CPEs: 288EXPL: 0

Asterisk Open Source 1.8.x, 11.x before 11.21.1, 12.x, and 13.x before 13.7.1 and Certified Asterisk 1.8.28, 11.6 before 11.6-cert12, and 13.1 before 13.1-cert3 allow remote authenticated users to cause a denial of service (uninitialized pointer dereference and crash) via a zero length error correcting redundancy packet for a UDPTL FAX packet that is lost. Asterisk Open Source 1.8.x, 11.x en versiones anteriores a 11.21.1, 12.x y 13.x en versiones anteriores a 13.7.1 y Certified Asterisk 1.8.28, 11.6 en versiones anteriores a 11.6-cert12 y 13.1 en versiones anteriores a 13.1-cert3 permiten a usuarios remotos autenticados causar una denegación de servicio (referencia a puntero no inicializado y caída) a través de un error de longitud cero corrigiendo la redundancia de paquetes para un paquete UDPTL FAX que se ha perdido. • http://downloads.asterisk.org/pub/security/AST-2016-003.html http://www.debian.org/security/2016/dsa-3700 http://www.securitytracker.com/id/1034931 •

CVSS: 7.1EPSS: 2%CPEs: 290EXPL: 1

chan_sip in Asterisk Open Source 1.8.x, 11.x before 11.21.1, 12.x, and 13.x before 13.7.1 and Certified Asterisk 1.8.28, 11.6 before 11.6-cert12, and 13.1 before 13.1-cert3, when the timert1 sip.conf configuration is set to a value greater than 1245, allows remote attackers to cause a denial of service (file descriptor consumption) via vectors related to large retransmit timeout values. chan_sip en Asterisk Open Source 1.8.x, 11.x en versiones anteriores a 11.21.1, 12.x y 13.x en versiones anteriores a 13.7.1 y Certified Asterisk 1.8.28, 11.6 en versiones anteriores a 11.6-cert12 y 13.1 en versiones anteriores a 13.1-cert3, cuando la configuración de timert1 en sip.conf se establece en un valor mayor que 1245, permite a atacantes remotos causar una denegación de servicio (consumo de descriptor de archivo) a través de vectores relacionados con valores de caducidad de retransmisión grandes. • http://downloads.asterisk.org/pub/security/AST-2016-002.html http://lists.fedoraproject.org/pipermail/package-announce/2016-February/177409.html http://lists.fedoraproject.org/pipermail/package-announce/2016-February/177422.html http://www.debian.org/security/2016/dsa-3700 http://www.securityfocus.com/bid/82651 http://www.securitytracker.com/id/1034930 • CWE-191: Integer Underflow (Wrap or Wraparound) •