CVE-2020-35652

Severity Score

6.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

An issue was discovered in res_pjsip_diversion.c in Sangoma Asterisk before 13.38.0, 14.x through 16.x before 16.15.0, 17.x before 17.9.0, and 18.x before 18.1.0. A crash can occur when a SIP message is received with a History-Info header that contains a tel-uri, or when a SIP 181 response is received that contains a tel-uri in the Diversion header.

Se detectó un problema en el archivo res_pjsip_diversion.c en Sangoma Asterisk versiones anteriores a 13.38.0, versiones 14.x hasta 16.x versiones anteriores a 16.15.0, versiones 17.x anteriores a 17.9.0 y versiones 18.x anteriores a 18.1.0. Puede ocurrir un bloqueo cuando es recibido un mensaje SIP con un encabezado History-Info que contiene un tel-uri, o cuando es recibida una respuesta SIP 181 que contiene un tel-uri en el encabezado Diversion

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

Single

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-12-23 CVE Reserved
2021-01-29 CVE Published
2023-10-02 EPSS Updated
2024-08-04 CVE Updated
2024-08-04 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

CAPEC

References (4)

URL	Tag	Source

URL	Date	SRC
https://issues.asterisk.org/jira/browse/ASTERISK-29191	2024-08-04

URL	Date	SRC

URL	Date	SRC
https://downloads.asterisk.org/pub/security/AST-2020-003.html	2021-02-04
https://downloads.asterisk.org/pub/security/AST-2020-004.html	2021-02-04
https://issues.asterisk.org/jira/browse/ASTERISK-29219	2021-02-04

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"				< 13.38.0 Search vendor "Digium" for product "Asterisk" and version " < 13.38.0"		-		Affected
Digium Search vendor "Digium"		Asterisk Search vendor "Digium" for product "Asterisk"				>= 14.0 < 16.15.0 Search vendor "Digium" for product "Asterisk" and version " >= 14.0 < 16.15.0"		-		Affected
Digium Search vendor "Digium"		Asterisk Search vendor "Digium" for product "Asterisk"				>= 17.0 < 17.9.0 Search vendor "Digium" for product "Asterisk" and version " >= 17.0 < 17.9.0"		-		Affected
Digium Search vendor "Digium"		Asterisk Search vendor "Digium" for product "Asterisk"				>= 18.0 < 18.1.0 Search vendor "Digium" for product "Asterisk" and version " >= 18.0 < 18.1.0"		-		Affected