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CVSS: 7.6EPSS: 95%CPEs: 3EXPL: 3

Multiple stack-based buffer overflows in the process_sdp function in chan_sip.c of the SIP channel T.38 SDP parser in Asterisk before 1.4.3 allow remote attackers to execute arbitrary code via a long (1) T38FaxRateManagement or (2) T38FaxUdpEC SDP parameter in an SIP message, as demonstrated using SIP INVITE. Múltiples desbordamientos de búfer basados en pila en la función process_sdp del chan_sip.c en el en el analizador sintáctico SIP channel T.38 del Asterisk, anterior al 1.4.3. permiten a atacantes remotos ejecutar código de su elección mediante un parámetro largo (1) T38FaxRateManagement o (2) T38FaxUdpEC SDP en el mensaje SIP, como lo demostrado usando SIP INVITE. • https://www.exploit-db.com/exploits/29900 https://www.exploit-db.com/exploits/29901 http://secunia.com/advisories/24977 http://securityreason.com/securityalert/2645 http://www.asterisk.org/files/ASA-2007-010.pdf http://www.osvdb.org/35368 http://www.securityfocus.com/archive/1/466883/100/0/threaded http://www.securityfocus.com/archive/1/472804/100/0/threaded http://www.securityfocus.com/bid/23648 http://www.securitytracker.com/id?1017951 http://www.securitytracker.com •

CVSS: 7.5EPSS: 3%CPEs: 1EXPL: 0

The Asterisk Extension Language (AEL) in pbx/pbx_ael.c in Asterisk does not properly generate extensions, which allows remote attackers to execute arbitrary extensions and have an unknown impact by specifying an invalid extension in a certain form. El Lenguaje de Extensión de Asterisk (AEL) en pbx/pbx_ael.c de Asterisk no genera extensiones apropiadamente, lo cual permite a atacantes remotos ejecutar extensiones de su elección y tener un impacto desconocido especificando una extensión inválida en formularios concretos. • http://bugs.digium.com/view.php?id=9316 http://secunia.com/advisories/24694 http://secunia.com/advisories/25582 http://svn.digium.com/view/asterisk?rev=59073&view=rev http://www.novell.com/linux/security/advisories/2007_34_asterisk.html http://www.securityfocus.com/bid/23155 http://www.vupen.com/english/advisories/2007/1123 •

CVSS: 7.8EPSS: 93%CPEs: 37EXPL: 0

The handle_response function in chan_sip.c in Asterisk before 1.2.17 and 1.4.x before 1.4.2 allows remote attackers to cause a denial of service (crash) via a SIP Response code 0 in a SIP packet. La función handle_response en chan_sip.c de Asterisk before 1.2.17 y 1.4.x versiones anteriores a 1.4.2 permite a atacantes remotos provocar una denegación de servicio (caída) mediante una respuesta SIP código 0 en un paquete SIP. • http://bugs.digium.com/view.php?id=9313 http://secunia.com/advisories/24579 http://secunia.com/advisories/24719 http://secunia.com/advisories/25582 http://security.gentoo.org/glsa/glsa-200704-01.xml http://svn.digium.com/view/asterisk/trunk/channels/chan_sip.c?r1=58907&r2=59038 http://voipsa.org/pipermail/voipsec_voipsa.org/2007-March/002275.html http://www.asterisk.org/node/48338 http://www.novell.com/linux/security/advisories/2007_34_asterisk.html http://www.sec •

CVSS: 7.8EPSS: 40%CPEs: 4EXPL: 1

The channel driver in Asterisk before 1.2.17 and 1.4.x before 1.4.2 allows remote attackers to cause a denial of service (crash) via a SIP INVITE message with an SDP containing one valid and one invalid IP address. El controlador del canal en Asterisk en versiones anteriores a 1.2.17 y 1.4.x en versiones anteriores a 1.4.2 permite a atacantes remotos provocar una denegación de servicio (caída) a través de un mensaje SIP INVITE con un SDP que contiene una dirección IP válida y otra no válida. • https://www.exploit-db.com/exploits/3566 http://asterisk.org/node/48339 http://marc.info/?l=full-disclosure&m=117432783011737&w=2 http://secunia.com/advisories/24564 http://secunia.com/advisories/24719 http://secunia.com/advisories/25582 http://security.gentoo.org/glsa/glsa-200704-01.xml http://voipsa.org/pipermail/voipsec_voipsa.org/2007-March/002275.html http://www.debian.org/security/2007/dsa-1358 http://www.novell.com/linux/security/advisories/2007_34_asterisk.htm •