CVE-2021-26712
Gentoo Linux Security Advisory 202412-03
Severity Score
7.5
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
0
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
Incorrect access controls in res_srtp.c in Sangoma Asterisk 13.38.1, 16.16.0, 17.9.1, and 18.2.0 and Certified Asterisk 16.8-cert5 allow a remote unauthenticated attacker to prematurely terminate secure calls by replaying SRTP packets.
Los controles de acceso incorrectos en el archivo res_srtp.c en Sangoma Asterisk versiones 13.38.1, 16.16.0, 17.9.1 y 18.2.0 y Certified Asterisk 16.8-cert5, permite a un atacante remoto no autenticado finalizar prematuramente llamadas seguras al reproducir paquetes SRTP
An unauthenticated remote attacker could replay SRTP packets which could cause an Asterisk instance configured without strict RTP validation to tear down calls prematurely.
*Credits:
N/A
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Authentication
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:-
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2021-02-05 CVE Reserved
- 2021-02-18 CVE Published
- 2024-08-03 CVE Updated
- 2025-06-03 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
CAPEC
References (5)
| URL | Tag | Source |
|---|---|---|
| http://packetstormsecurity.com/files/161473/Asterisk-Project-Security-Advisory-AST-2021-003.html | Third Party Advisory |
|
| http://seclists.org/fulldisclosure/2021/Feb/59 | Mailing List |
|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://issues.asterisk.org/jira/browse/ASTERISK-29260 | 2021-02-24 |
| URL | Date | SRC |
|---|---|---|
| https://downloads.asterisk.org/pub/security | 2021-02-24 | |
| https://downloads.asterisk.org/pub/security/AST-2021-003.html | 2021-02-24 |
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Digium Search vendor "Digium" | Asterisk Search vendor "Digium" for product "Asterisk" | >= 13.0.0 <= 13.38.2 Search vendor "Digium" for product "Asterisk" and version " >= 13.0.0 <= 13.38.2" | - |
Affected
| ||||||
| Digium Search vendor "Digium" | Asterisk Search vendor "Digium" for product "Asterisk" | >= 16.0.0 < 16.16.1 Search vendor "Digium" for product "Asterisk" and version " >= 16.0.0 < 16.16.1" | - |
Affected
| ||||||
| Digium Search vendor "Digium" | Asterisk Search vendor "Digium" for product "Asterisk" | >= 17.0.0 < 17.9.2 Search vendor "Digium" for product "Asterisk" and version " >= 17.0.0 < 17.9.2" | - |
Affected
| ||||||
| Digium Search vendor "Digium" | Asterisk Search vendor "Digium" for product "Asterisk" | >= 18.0 < 18.2.1 Search vendor "Digium" for product "Asterisk" and version " >= 18.0 < 18.2.1" | - |
Affected
| ||||||
| Digium Search vendor "Digium" | Certified Asterisk Search vendor "Digium" for product "Certified Asterisk" | 16.8 Search vendor "Digium" for product "Certified Asterisk" and version "16.8" | - |
Affected
| ||||||
| Digium Search vendor "Digium" | Certified Asterisk Search vendor "Digium" for product "Certified Asterisk" | 16.8 Search vendor "Digium" for product "Certified Asterisk" and version "16.8" | cert1-rc1 |
Affected
| ||||||
| Digium Search vendor "Digium" | Certified Asterisk Search vendor "Digium" for product "Certified Asterisk" | 16.8 Search vendor "Digium" for product "Certified Asterisk" and version "16.8" | cert1-rc2 |
Affected
| ||||||
| Digium Search vendor "Digium" | Certified Asterisk Search vendor "Digium" for product "Certified Asterisk" | 16.8 Search vendor "Digium" for product "Certified Asterisk" and version "16.8" | cert1-rc3 |
Affected
| ||||||
| Digium Search vendor "Digium" | Certified Asterisk Search vendor "Digium" for product "Certified Asterisk" | 16.8 Search vendor "Digium" for product "Certified Asterisk" and version "16.8" | cert1-rc4 |
Affected
| ||||||
| Digium Search vendor "Digium" | Certified Asterisk Search vendor "Digium" for product "Certified Asterisk" | 16.8 Search vendor "Digium" for product "Certified Asterisk" and version "16.8" | cert2 |
Affected
| ||||||
| Digium Search vendor "Digium" | Certified Asterisk Search vendor "Digium" for product "Certified Asterisk" | 16.8 Search vendor "Digium" for product "Certified Asterisk" and version "16.8" | cert3 |
Affected
| ||||||
| Digium Search vendor "Digium" | Certified Asterisk Search vendor "Digium" for product "Certified Asterisk" | 16.8 Search vendor "Digium" for product "Certified Asterisk" and version "16.8" | cert4 |
Affected
| ||||||
| Digium Search vendor "Digium" | Certified Asterisk Search vendor "Digium" for product "Certified Asterisk" | 16.8 Search vendor "Digium" for product "Certified Asterisk" and version "16.8" | cert4-rc1 |
Affected
| ||||||
| Digium Search vendor "Digium" | Certified Asterisk Search vendor "Digium" for product "Certified Asterisk" | 16.8 Search vendor "Digium" for product "Certified Asterisk" and version "16.8" | cert4-rc2 |
Affected
| ||||||
| Digium Search vendor "Digium" | Certified Asterisk Search vendor "Digium" for product "Certified Asterisk" | 16.8 Search vendor "Digium" for product "Certified Asterisk" and version "16.8" | cert4-rc3 |
Affected
| ||||||
| Digium Search vendor "Digium" | Certified Asterisk Search vendor "Digium" for product "Certified Asterisk" | 16.8 Search vendor "Digium" for product "Certified Asterisk" and version "16.8" | cert4-rc4 |
Affected
| ||||||
| Digium Search vendor "Digium" | Certified Asterisk Search vendor "Digium" for product "Certified Asterisk" | 16.8 Search vendor "Digium" for product "Certified Asterisk" and version "16.8" | cert5 |
Affected
| ||||||