CVSS: 7.5EPSS: 0%CPEs: 31EXPL: 6CVE-2023-49786 – Asterisk susceptible to Denial of Service via DTLS Hello packets during call initiation
https://notcve.org/view.php?id=CVE-2023-49786
14 Dec 2023 — 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 vulnerabl... • https://packetstorm.news/files/id/176251 • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') CWE-703: Improper Check or Handling of Exceptional Conditions •
CVSS: 8.5EPSS: 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
14 Dec 2023 — 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 out... • https://github.com/asterisk/asterisk/commit/a1ca0268254374b515fa5992f01340f7717113fa • CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') •
CVSS: 7.8EPSS: 0%CPEs: 31EXPL: 1CVE-2023-49294 – Asterisk Path Traversal vulnerability
https://notcve.org/view.php?id=CVE-2023-49294
14 Dec 2023 — 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 pri... • https://packetstorm.news/files/id/177819 • CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') •
CVSS: 6.1EPSS: 0%CPEs: 6EXPL: 0CVE-2022-42706 – Debian Security Advisory 5358-1
https://notcve.org/view.php?id=CVE-2022-42706
05 Dec 2022 — 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 cone... • https://downloads.asterisk.org/pub/security/AST-2022-009.html • CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') •
CVSS: 6.8EPSS: 0%CPEs: 13EXPL: 0CVE-2021-46837 – Debian Security Advisory 5285-1
https://notcve.org/view.php?id=CVE-2021-46837
30 Aug 2022 — 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 funci... • https://downloads.asterisk.org/pub/security/AST-2021-006.html • CWE-476: NULL Pointer Dereference •
CVSS: 9.8EPSS: 0%CPEs: 19EXPL: 0CVE-2022-23608 – Use after free in PJSIP
https://notcve.org/view.php?id=CVE-2022-23608
22 Feb 2022 — PJSIP is a free and open source multimedia communication library written in C language implementing standard based protocols such as SIP, SDP, RTP, STUN, TURN, and ICE. In versions up to and including 2.11.1 when in a dialog set (or forking) scenario, a hash key shared by multiple UAC dialogs can potentially be prematurely freed when one of the dialogs is destroyed . The issue may cause a dialog set to be registered in the hash table multiple times (with different hash keys) leading to undefined behavior su... • http://packetstormsecurity.com/files/166226/Asterisk-Project-Security-Advisory-AST-2022-005.html • CWE-416: Use After Free •
CVSS: 9.1EPSS: 0%CPEs: 19EXPL: 0CVE-2022-21723 – Out-of-bounds read in multipart parsing in PJSIP
https://notcve.org/view.php?id=CVE-2022-21723
27 Jan 2022 — PJSIP is a free and open source multimedia communication library written in C language implementing standard based protocols such as SIP, SDP, RTP, STUN, TURN, and ICE. In versions 2.11.1 and prior, parsing an incoming SIP message that contains a malformed multipart can potentially cause out-of-bound read access. This issue affects all PJSIP users that accept SIP multipart. The patch is available as commit in the `master` branch. There are no known workarounds. • http://packetstormsecurity.com/files/166227/Asterisk-Project-Security-Advisory-AST-2022-006.html • CWE-125: Out-of-bounds Read •
CVSS: 9.8EPSS: 0%CPEs: 20EXPL: 0CVE-2021-37706 – Potential integer underflow upon receiving STUN message in PJSIP
https://notcve.org/view.php?id=CVE-2021-37706
22 Dec 2021 — PJSIP is a free and open source multimedia communication library written in C language implementing standard based protocols such as SIP, SDP, RTP, STUN, TURN, and ICE. In affected versions if the incoming STUN message contains an ERROR-CODE attribute, the header length is not checked before performing a subtraction operation, potentially resulting in an integer underflow scenario. This issue affects all users that use STUN. A malicious actor located within the victim’s network may forge and send a speciall... • http://packetstormsecurity.com/files/166225/Asterisk-Project-Security-Advisory-AST-2022-004.html • CWE-191: Integer Underflow (Wrap or Wraparound) •
CVSS: 6.5EPSS: 0%CPEs: 7EXPL: 0CVE-2020-28242
https://notcve.org/view.php?id=CVE-2020-28242
06 Nov 2020 — An issue was discovered in Asterisk Open Source 13.x before 13.37.1, 16.x before 16.14.1, 17.x before 17.8.1, and 18.x before 18.0.1 and Certified Asterisk before 16.8-cert5. If Asterisk is challenged on an outbound INVITE and the nonce is changed in each response, Asterisk will continually send INVITEs in a loop. This causes Asterisk to consume more and more memory since the transaction will never terminate (even if the call is hung up), ultimately leading to a restart or shutdown of Asterisk. Outbound aut... • http://downloads.asterisk.org/pub/security/AST-2020-002.html • CWE-674: Uncontrolled Recursion •