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CVSS: 6.5EPSS: 0%CPEs: 4EXPL: 1

29 Jan 2021 — An issue was discovered in res_pjsip_diversion.c in Sangoma Asterisk before 13.38.0, 14.x through 16.x before 16.15.0, 17.x before 17.9.0, and 18.x before 18.1.0. A crash can occur when a SIP message is received with a History-Info header that contains a tel-uri, or when a SIP 181 response is received that contains a tel-uri in the Diversion header. Se detectó un problema en el archivo res_pjsip_diversion.c en Sangoma Asterisk versiones anteriores a 13.38.0, versiones 14.x hasta 16.x versiones anteriores a ... • https://downloads.asterisk.org/pub/security/AST-2020-003.html •

CVSS: 7.5EPSS: 64%CPEs: 7EXPL: 3

22 Feb 2018 — A Buffer Overflow issue was discovered in Asterisk through 13.19.1, 14.x through 14.7.5, and 15.x through 15.2.1, and Certified Asterisk through 13.18-cert2. When processing a SUBSCRIBE request, the res_pjsip_pubsub module stores the accepted formats present in the Accept headers of the request. This code did not limit the number of headers it processed, despite having a fixed limit of 32. If more than 32 Accept headers were present, the code would write outside of its memory and cause a crash. Se ha descub... • https://packetstorm.news/files/id/146577 • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •

CVSS: 7.5EPSS: 88%CPEs: 15EXPL: 2

02 Dec 2017 — An issue was discovered in chan_skinny.c in Asterisk Open Source 13.18.2 and older, 14.7.2 and older, and 15.1.2 and older, and Certified Asterisk 13.13-cert7 and older. If the chan_skinny (aka SCCP protocol) channel driver is flooded with certain requests, it can cause the asterisk process to use excessive amounts of virtual memory, eventually causing asterisk to stop processing requests of any kind. Se ha descubierto un problema en chan_skinny.c en Asterisk Open Source en versiones 13.18.2 y anteriores, 1... • https://packetstorm.news/files/id/146299 • CWE-459: Incomplete Cleanup •

CVSS: 7.5EPSS: 0%CPEs: 189EXPL: 0

09 Oct 2017 — In Asterisk 11.x before 11.25.3, 13.x before 13.17.2, and 14.x before 14.6.2 and Certified Asterisk 11.x before 11.6-cert18 and 13.x before 13.13-cert6, insufficient RTCP packet validation could allow reading stale buffer contents and when combined with the "nat" and "symmetric_rtp" options allow redirecting where Asterisk sends the next RTCP report. En Asterisk enversiones 11.x anteriores a la 11.25.3, versiones 13.x anteriores a la 13.17.2 y versiones 14.x anteriores a la 14.6.2; y en Certified Asterisk e... • http://downloads.asterisk.org/pub/security/AST-2017-008.html • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •

CVSS: 9.8EPSS: 37%CPEs: 189EXPL: 0

02 Sep 2017 — In Asterisk 11.x before 11.25.2, 13.x before 13.17.1, and 14.x before 14.6.1 and Certified Asterisk 11.x before 11.6-cert17 and 13.x before 13.13-cert5, unauthorized command execution is possible. The app_minivm module has an "externnotify" program configuration option that is executed by the MinivmNotify dialplan application. The application uses the caller-id name and number as part of a built string passed to the OS shell for interpretation and execution. Since the caller-id name and number can come from... • http://downloads.asterisk.org/pub/security/AST-2017-006.html • CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') •

CVSS: 7.5EPSS: 0%CPEs: 189EXPL: 0

02 Sep 2017 — In res/res_rtp_asterisk.c in Asterisk 11.x before 11.25.2, 13.x before 13.17.1, and 14.x before 14.6.1 and Certified Asterisk 11.x before 11.6-cert17 and 13.x before 13.13-cert5, unauthorized data disclosure (media takeover in the RTP stack) is possible with careful timing by an attacker. The "strictrtp" option in rtp.conf enables a feature of the RTP stack that learns the source address of media for a session and drops any packets that do not originate from the expected address. This option is enabled by d... • http://downloads.asterisk.org/pub/security/AST-2017-005.html • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •

CVSS: 5.3EPSS: 1%CPEs: 146EXPL: 0

12 Dec 2016 — 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 ... • http://downloads.asterisk.org/pub/security/AST-2016-009.html • CWE-285: Improper Authorization •

CVSS: 7.5EPSS: 5%CPEs: 113EXPL: 0

26 Oct 2016 — 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) Multiple vu... • http://downloads.asterisk.org/pub/security/AST-2016-007.html • CWE-399: Resource Management Errors •

CVSS: 6.5EPSS: 6%CPEs: 288EXPL: 0

22 Feb 2016 — 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 ver... • http://downloads.asterisk.org/pub/security/AST-2016-003.html •

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

22 Feb 2016 — 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... • http://downloads.asterisk.org/pub/security/AST-2016-002.html • CWE-191: Integer Underflow (Wrap or Wraparound) •