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CVSS: 7.8EPSS: 0%CPEs: 192EXPL: 0

08 Sep 2009 — The IAX2 protocol implementation in Asterisk Open Source 1.2.x before 1.2.35, 1.4.x before 1.4.26.2, 1.6.0.x before 1.6.0.15, and 1.6.1.x before 1.6.1.6; Business Edition B.x.x before B.2.5.10, C.2.x before C.2.4.3, and C.3.x before C.3.1.1; and s800i 1.3.x before 1.3.0.3 allows remote attackers to cause a denial of service (call-number exhaustion) by initiating many IAX2 message exchanges, a related issue to CVE-2008-3263. La implementación del protocolo IAX2 en Asterisk Open Source v1.2.x antes de v1.2.35... • http://downloads.asterisk.org/pub/security/AST-2009-006.html • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •

CVSS: 5.3EPSS: 0%CPEs: 150EXPL: 0

14 Jan 2009 — IAX2 in Asterisk Open Source 1.2.x before 1.2.31, 1.4.x before 1.4.23-rc4, and 1.6.x before 1.6.0.3-rc2; Business Edition A.x.x, B.x.x before B.2.5.7, C.1.x.x before C.1.10.4, and C.2.x.x before C.2.1.2.1; and s800i 1.2.x before 1.3.0 responds differently to a failed login attempt depending on whether the user account exists, which allows remote attackers to enumerate valid usernames. IAX2 en Asterisk Open Source v1.2.x anterior a v1.2.31, v1.4.x anterior a v1.4.23-rc4, y v1.6.x anterior a v1.6.0.3-rc2; Bus... • http://downloads.digium.com/pub/security/AST-2009-001.html • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •

CVSS: 7.5EPSS: 2%CPEs: 17EXPL: 0

17 Dec 2008 — Asterisk Open Source 1.2.26 through 1.2.30.3 and Business Edition B.2.3.5 through B.2.5.5, when realtime IAX2 users are enabled, allows remote attackers to cause a denial of service (crash) via authentication attempts involving (1) an unknown user or (2) a user using hostname matching. Asterisk Open Source 1.2.26 hasta 1.2.30.3 y Business Edition B.2.3.5 hasta B.2.5.5, cuando los usuarios realtime IAX2 son habilitados, permite a los atacantes remotos causar una denegación de servicio (caída) a través de int... • http://downloads.digium.com/pub/security/AST-2008-012.html • CWE-287: Improper Authentication •

CVSS: 7.8EPSS: 11%CPEs: 122EXPL: 0

24 Jul 2008 — The FWDOWNL firmware-download implementation in Asterisk Open Source 1.0.x, 1.2.x before 1.2.30, and 1.4.x before 1.4.21.2; Business Edition A.x.x, B.x.x before B.2.5.4, and C.x.x before C.1.10.3; AsteriskNOW; Appliance Developer Kit 0.x.x; and s800i 1.0.x before 1.2.0.1 allows remote attackers to cause a denial of service (traffic amplification) via an IAX2 FWDOWNL request. La implementación FWDOWNL firmware-download en Asterisk Open Source 1.0.x, 1.2.x antes de 1.2.30 y 1.4.x antes de 1.4.21.2; Business E... • http://downloads.digium.com/pub/security/AST-2008-011.html • CWE-287: Improper Authentication •

CVSS: 7.5EPSS: 8%CPEs: 53EXPL: 1

04 Jun 2008 — Asterisk Open Source 1.0.x and 1.2.x before 1.2.29 and Business Edition A.x.x and B.x.x before B.2.5.3, when pedantic parsing (aka pedanticsipchecking) is enabled, allows remote attackers to cause a denial of service (daemon crash) via a SIP INVITE message that lacks a From header, related to invocations of the ast_uri_decode function, and improper handling of (1) an empty const string and (2) a NULL pointer. Asterisk Open Source 1.0.x y 1.2.x anterior 1.2.29 y Business Edition A.x.x y B.x.x anterior B.2.5.... • https://www.exploit-db.com/exploits/5749 • CWE-20: Improper Input Validation •

CVSS: 7.5EPSS: 1%CPEs: 137EXPL: 0

23 Apr 2008 — The IAX2 channel driver (chan_iax2) in Asterisk 1.2 before revision 72630 and 1.4 before revision 65679, when configured to allow unauthenticated calls, sends "early audio" to an unverified source IP address of a NEW message, which allows remote attackers to cause a denial of service (traffic amplification) via a spoofed NEW message. El IAX2 channel driver (chan_iax2) en Asterisk 1.2 anterior a la revisión 72630 y 1.4 anterior a la revisión 65679, cuando está configurado para permitir llamadas sin autentica... • http://bugs.digium.com/view.php?id=10078 • CWE-16: Configuration •

CVSS: 7.5EPSS: 3%CPEs: 145EXPL: 0

23 Apr 2008 — The IAX2 channel driver (chan_iax2) in Asterisk Open Source 1.0.x, 1.2.x before 1.2.28, and 1.4.x before 1.4.19.1; Business Edition A.x.x, B.x.x before B.2.5.2, and C.x.x before C.1.8.1; AsteriskNOW before 1.0.3; Appliance Developer Kit 0.x.x; and s800i before 1.1.0.3, when configured to allow unauthenticated calls, does not verify that an ACK response contains a call number matching the server's reply to a NEW message, which allows remote attackers to cause a denial of service (traffic amplification) via a... • http://bugs.digium.com/view.php?id=10078 • CWE-287: Improper Authentication •

CVSS: 9.8EPSS: 20%CPEs: 8EXPL: 3

24 Mar 2008 — Multiple buffer overflows in Asterisk Open Source 1.4.x before 1.4.18.1 and 1.4.19-rc3, Open Source 1.6.x before 1.6.0-beta6, Business Edition C.x.x before C.1.6.1, AsteriskNOW 1.0.x before 1.0.2, Appliance Developer Kit before 1.4 revision 109386, and s800i 1.1.x before 1.1.0.2 allow remote attackers to (1) write a zero to an arbitrary memory location via a large RTP payload number, related to the ast_rtp_unset_m_type function in main/rtp.c; or (2) write certain integers to an arbitrary memory location via... • https://www.exploit-db.com/exploits/31440 • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •

CVSS: 9.1EPSS: 0%CPEs: 109EXPL: 0

20 Mar 2008 — Unspecified vulnerability in Asterisk Open Source 1.2.x before 1.2.27, 1.4.x before 1.4.18.1 and 1.4.19-rc3; Business Edition A.x.x, B.x.x before B.2.5.1, and C.x.x before C.1.6.2; AsteriskNOW 1.0.x before 1.0.2; Appliance Developer Kit before 1.4 revision 109393; and s800i 1.0.x before 1.1.0.2; allows remote attackers to access the SIP channel driver via a crafted From header. Vulnerabilidad no especificada en Asterisk Open Source versiones 1.2.x anteriores a 1.2.27, 1.4.x anteriores a 1.4.18.1 y 1.4.19-rc... • http://downloads.digium.com/pub/security/AST-2008-003.html • CWE-264: Permissions, Privileges, and Access Controls •

CVSS: 9.8EPSS: 2%CPEs: 5EXPL: 0

20 Mar 2008 — Format string vulnerability in Asterisk Open Source 1.6.x before 1.6.0-beta6 might allow remote attackers to execute arbitrary code via logging messages that are not properly handled by (1) the ast_verbose logging API call, or (2) the astman_append function. Vulnerabilidad de cadena de formato en Asterisk Open Source versiones 1.6.x anteriores a 1.6.0-beta6 permite a atacantes remotos ejecutar código de su elección mediante la utilización de mensajes de eventos que no son manejados adecuadamente por (1) la ... • http://downloads.digium.com/pub/security/AST-2008-004.html • CWE-134: Use of Externally-Controlled Format String •