CVSS: 7.5EPSS: 0%CPEs: 31EXPL: 5CVE-2023-49786 – Asterisk susceptible to Denial of Service via DTLS Hello packets during call initiation
https://notcve.org/view.php?id=CVE-2023-49786
Asterisk is an open source private branch exchange and telephony toolkit. In Asterisk prior to versions 18.20.1, 20.5.1, and 21.0.1; as well as certified-asterisk prior to 18.9-cert6; Asterisk is susceptible to a DoS due to a race condition in the hello handshake phase of the DTLS protocol when handling DTLS-SRTP for media setup. This attack can be done continuously, thus denying new DTLS-SRTP encrypted calls during the attack. Abuse of this vulnerability may lead to a massive Denial of Service on vulnerable Asterisk servers for calls that rely on DTLS-SRTP. Commit d7d7764cb07c8a1872804321302ef93bf62cba05 contains a fix, which is part of versions 18.20.1, 20.5.1, 21.0.1, amd 18.9-cert6. • http://packetstormsecurity.com/files/176251/Asterisk-20.1.0-Denial-Of-Service.html http://seclists.org/fulldisclosure/2023/Dec/24 http://www.openwall.com/lists/oss-security/2023/12/15/7 https://github.com/EnableSecurity/advisories/tree/master/ES2023-01-asterisk-dtls-hello-race https://github.com/asterisk/asterisk/commit/d7d7764cb07c8a1872804321302ef93bf62cba05 https://github.com/asterisk/asterisk/security/advisories/GHSA-hxj9-xwr8-w8pq https://lists.debian.org/debian-lts-announce/2023/12/msg00019.html • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') CWE-703: Improper Check or Handling of Exceptional Conditions •
CVSS: 8.2EPSS: 0%CPEs: 31EXPL: 0CVE-2023-37457 – Asterisk's PJSIP_HEADER dialplan function can overwrite memory/cause crash when using 'update'
https://notcve.org/view.php?id=CVE-2023-37457
Asterisk is an open source private branch exchange and telephony toolkit. In Asterisk versions 18.20.0 and prior, 20.5.0 and prior, and 21.0.0; as well as ceritifed-asterisk 18.9-cert5 and prior, the 'update' functionality of the PJSIP_HEADER dialplan function can exceed the available buffer space for storing the new value of a header. By doing so this can overwrite memory or cause a crash. This is not externally exploitable, unless dialplan is explicitly written to update a header based on data from an outside source. If the 'update' functionality is not used the vulnerability does not occur. • https://github.com/asterisk/asterisk/commit/a1ca0268254374b515fa5992f01340f7717113fa https://github.com/asterisk/asterisk/security/advisories/GHSA-98rc-4j27-74hh https://lists.debian.org/debian-lts-announce/2023/12/msg00019.html • CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') •
CVSS: 7.5EPSS: 0%CPEs: 31EXPL: 0CVE-2023-49294 – Asterisk Path Traversal vulnerability
https://notcve.org/view.php?id=CVE-2023-49294
Asterisk is an open source private branch exchange and telephony toolkit. In Asterisk prior to versions 18.20.1, 20.5.1, and 21.0.1, as well as certified-asterisk prior to 18.9-cert6, it is possible to read any arbitrary file even when the `live_dangerously` is not enabled. This allows arbitrary files to be read. Asterisk versions 18.20.1, 20.5.1, and 21.0.1, as well as certified-asterisk prior to 18.9-cert6, contain a fix for this issue. Asterisk es un conjunto de herramientas de telefonía y centralita privada de código abierto. • https://github.com/asterisk/asterisk/blob/master/main/manager.c#L3757 https://github.com/asterisk/asterisk/commit/424be345639d75c6cb7d0bd2da5f0f407dbd0bd5 https://github.com/asterisk/asterisk/security/advisories/GHSA-8857-hfmw-vg8f https://lists.debian.org/debian-lts-announce/2023/12/msg00019.html • CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') •
CVSS: 4.9EPSS: 0%CPEs: 6EXPL: 0CVE-2022-42706
https://notcve.org/view.php?id=CVE-2022-42706
An issue was discovered in Sangoma Asterisk through 16.28, 17 and 18 through 18.14, 19 through 19.6, and certified through 18.9-cert1. GetConfig, via Asterisk Manager Interface, allows a connected application to access files outside of the asterisk configuration directory, aka Directory Traversal. Se descubrió un problema en Sangoma Asterisk hasta 16.28, 17 y 18 hasta 18.14, 19 hasta 19.6 y se certificó hasta 18.9-cert1. GetConfig, a través de la interfaz de Asterisk Manager, permite que una aplicación conectada acceda a archivos fuera del directorio de configuración de Asterisk, aka como Directory Traversal. • https://downloads.asterisk.org/pub/security/AST-2022-009.html https://lists.debian.org/debian-lts-announce/2023/02/msg00029.html https://www.debian.org/security/2023/dsa-5358 • CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') •
CVSS: 6.5EPSS: 0%CPEs: 13EXPL: 0CVE-2021-46837
https://notcve.org/view.php?id=CVE-2021-46837
res_pjsip_t38 in Sangoma Asterisk 16.x before 16.16.2, 17.x before 17.9.3, and 18.x before 18.2.2, and Certified Asterisk before 16.8-cert7, allows an attacker to trigger a crash by sending an m=image line and zero port in a response to a T.38 re-invite initiated by Asterisk. This is a re-occurrence of the CVE-2019-15297 symptoms but not for exactly the same reason. The crash occurs because there is an append operation relative to the active topology, but this should instead be a replace operation. La función res_pjsip_t38 en Sangoma Asterisk versiones 16.x anteriores a 16.16.2, 17.x anteriores a 17.9.3, y 18.x anteriores a 18.2.2, y Certified Asterisk anteriores a 16.8-cert7, permite a un atacante desencadenar un fallo mediante el envío de una línea m=image y un puerto cero en una respuesta a una Re invitación T.38 iniciada por Asterisk. Se trata de una reaparición de los síntomas de la CVE-2019-15297 pero no exactamente por el mismo motivo. • https://downloads.asterisk.org/pub/security/AST-2021-006.html https://lists.debian.org/debian-lts-announce/2022/11/msg00021.html https://www.debian.org/security/2022/dsa-5285 • CWE-476: NULL Pointer Dereference •