CVE-2020-35776
Severity Score
6.5
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
1
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
A buffer overflow in res_pjsip_diversion.c in Sangoma Asterisk versions 13.38.1, 16.15.1, 17.9.1, and 18.1.1 allows remote attacker to crash Asterisk by deliberately misusing SIP 181 responses.
Un desbordamiento del búfer en el archivo res_pjsip_diversion.c en Sangoma Asterisk versiones 13.38.1, 16.15.1, 17.9.1 y 18.1.1, permite a un atacante remoto bloquear Asterisk al hacer un uso inapropiado deliberadamente de las respuestas SIP 181
*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
- 2020-12-29 CVE Reserved
- 2021-02-18 CVE Published
- 2023-11-04 EPSS Updated
- 2024-08-04 CVE Updated
- 2024-08-04 First Exploit
- ---------- Exploited in Wild
- ---------- KEV Due Date
CWE
- CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
CAPEC
References (5)
| URL | Tag | Source |
|---|---|---|
| http://seclists.org/fulldisclosure/2021/Feb/57 | Mailing List |
|
| URL | Date | SRC |
|---|---|---|
| https://issues.asterisk.org/jira/browse/ASTERISK-29227 | 2024-08-04 |
| URL | Date | SRC |
|---|---|---|
| http://packetstormsecurity.com/files/161470/Asterisk-Project-Security-Advisory-AST-2021-001.html | 2021-02-24 |
| URL | Date | SRC |
|---|---|---|
| https://downloads.asterisk.org/pub/security/AST-2021-001.html | 2021-02-24 | |
| https://issues.asterisk.org | 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 <= 13.38.1 Search vendor "Digium" for product "Asterisk" and version " >= 13.0.0 <= 13.38.1" | - |
Affected
| ||||||
| Digium Search vendor "Digium" | Asterisk Search vendor "Digium" for product "Asterisk" | >= 16.0.0 <= 16.15.1 Search vendor "Digium" for product "Asterisk" and version " >= 16.0.0 <= 16.15.1" | - |
Affected
| ||||||
| Digium Search vendor "Digium" | Asterisk Search vendor "Digium" for product "Asterisk" | >= 17.0.0 <= 17.9.1 Search vendor "Digium" for product "Asterisk" and version " >= 17.0.0 <= 17.9.1" | - |
Affected
| ||||||
| Digium Search vendor "Digium" | Asterisk Search vendor "Digium" for product "Asterisk" | >= 18.0 <= 18.1.1 Search vendor "Digium" for product "Asterisk" and version " >= 18.0 <= 18.1.1" | - |
Affected
| ||||||