CVE-2021-46837
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
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. El fallo es producido porque se presenta una operación de append relativa a la topología activa, pero debería ser en cambio una operación de replace
CVSS Scores
SSVC
- Decision:-
Timeline
- 2022-08-30 CVE Reserved
- 2022-08-30 CVE Published
- 2024-07-16 EPSS Updated
- 2024-08-04 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-476: NULL Pointer Dereference
CAPEC
References (3)
| URL | Tag | Source |
|---|---|---|
| https://lists.debian.org/debian-lts-announce/2022/11/msg00021.html | Mailing List |
|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://downloads.asterisk.org/pub/security/AST-2021-006.html | 2023-01-28 | |
| https://www.debian.org/security/2022/dsa-5285 | 2023-01-28 |
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Asterisk Search vendor "Asterisk" | Certified Asterisk Search vendor "Asterisk" for product "Certified Asterisk" | 16.8.0 Search vendor "Asterisk" for product "Certified Asterisk" and version "16.8.0" | - |
Affected
| ||||||
| Asterisk Search vendor "Asterisk" | Certified Asterisk Search vendor "Asterisk" for product "Certified Asterisk" | 16.8.0 Search vendor "Asterisk" for product "Certified Asterisk" and version "16.8.0" | cert1 |
Affected
| ||||||
| Asterisk Search vendor "Asterisk" | Certified Asterisk Search vendor "Asterisk" for product "Certified Asterisk" | 16.8.0 Search vendor "Asterisk" for product "Certified Asterisk" and version "16.8.0" | cert2 |
Affected
| ||||||
| Asterisk Search vendor "Asterisk" | Certified Asterisk Search vendor "Asterisk" for product "Certified Asterisk" | 16.8.0 Search vendor "Asterisk" for product "Certified Asterisk" and version "16.8.0" | cert3 |
Affected
| ||||||
| Asterisk Search vendor "Asterisk" | Certified Asterisk Search vendor "Asterisk" for product "Certified Asterisk" | 16.8.0 Search vendor "Asterisk" for product "Certified Asterisk" and version "16.8.0" | cert4 |
Affected
| ||||||
| Asterisk Search vendor "Asterisk" | Certified Asterisk Search vendor "Asterisk" for product "Certified Asterisk" | 16.8.0 Search vendor "Asterisk" for product "Certified Asterisk" and version "16.8.0" | cert5 |
Affected
| ||||||
| Asterisk Search vendor "Asterisk" | Certified Asterisk Search vendor "Asterisk" for product "Certified Asterisk" | 16.8.0 Search vendor "Asterisk" for product "Certified Asterisk" and version "16.8.0" | cert6 |
Affected
| ||||||
| Digium Search vendor "Digium" | Asterisk Search vendor "Digium" for product "Asterisk" | >= 16.0.0 < 16.16.2 Search vendor "Digium" for product "Asterisk" and version " >= 16.0.0 < 16.16.2" | - |
Affected
| ||||||
| Digium Search vendor "Digium" | Asterisk Search vendor "Digium" for product "Asterisk" | >= 17.0.0 < 17.9.3 Search vendor "Digium" for product "Asterisk" and version " >= 17.0.0 < 17.9.3" | - |
Affected
| ||||||
| Digium Search vendor "Digium" | Asterisk Search vendor "Digium" for product "Asterisk" | >= 18.0.0 < 18.2.2 Search vendor "Digium" for product "Asterisk" and version " >= 18.0.0 < 18.2.2" | - |
Affected
| ||||||
| Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 9.0 Search vendor "Debian" for product "Debian Linux" and version "9.0" | - |
Affected
| ||||||
| Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 10.0 Search vendor "Debian" for product "Debian Linux" and version "10.0" | - |
Affected
| ||||||
| Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 11.0 Search vendor "Debian" for product "Debian Linux" and version "11.0" | - |
Affected
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