CVE-2019-18790

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 channels/chan_sip.c in Sangoma Asterisk 13.x before 13.29.2, 16.x before 16.6.2, and 17.x before 17.0.1, and Certified Asterisk 13.21 before cert5. A SIP request can be sent to Asterisk that can change a SIP peer's IP address. A REGISTER does not need to occur, and calls can be hijacked as a result. The only thing that needs to be known is the peer's name; authentication details such as passwords do not need to be known. This vulnerability is only exploitable when the nat option is set to the default, or auto_force_rport.

Se ha descubierto un problema en channels/chan_sip.c en Sangoma Asterisk 13.x antes de 13.29.2, 16.x antes de 16.6.2, y 17.x antes de 17.0.1, y Certified Asterisk 13.21 antes de cert5. Una solicitud SIP puede ser enviada a Asterisk que puede cambiar la dirección IP de un peer SIP. Un REGISTRO no necesita ocurrir, y las llamadas pueden ser secuestradas como resultado. Lo único que se necesita conocer es el nombre del peer; los detalles de autenticación como las contraseñas no necesitan ser conocidos. Esta vulnerabilidad sólo es explotable cuando la opción nat está configurada por defecto, o auto_force_rport

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

None

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2019-11-06 CVE Reserved
2019-11-21 CVE Published
2024-08-05 CVE Updated
2024-11-15 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-862: Missing Authorization

CAPEC

References (4)

URL	Tag	Source
https://lists.debian.org/debian-lts-announce/2019/11/msg00038.html	Mailing List
https://lists.debian.org/debian-lts-announce/2022/04/msg00001.html	Mailing List

URL	Date	SRC

URL	Date	SRC
http://downloads.asterisk.org/pub/security/AST-2019-006.html	2022-05-13

URL	Date	SRC
https://www.asterisk.org/downloads/security-advisories	2022-05-13

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 < 13.29.2 Search vendor "Digium" for product "Asterisk" and version " >= 13.0.0 < 13.29.2"		-		Affected
Digium Search vendor "Digium"		Asterisk Search vendor "Digium" for product "Asterisk"				>= 16.0.0 < 16.6.2 Search vendor "Digium" for product "Asterisk" and version " >= 16.0.0 < 16.6.2"		-		Affected
Digium Search vendor "Digium"		Asterisk Search vendor "Digium" for product "Asterisk"				>= 17.0.0 < 17.0.1 Search vendor "Digium" for product "Asterisk" and version " >= 17.0.0 < 17.0.1"		-		Affected
Digium Search vendor "Digium"		Certified Asterisk Search vendor "Digium" for product "Certified Asterisk"				13.21.0 Search vendor "Digium" for product "Certified Asterisk" and version "13.21.0"		-		Affected
Digium Search vendor "Digium"		Certified Asterisk Search vendor "Digium" for product "Certified Asterisk"				13.21.0 Search vendor "Digium" for product "Certified Asterisk" and version "13.21.0"		cert1		Affected
Digium Search vendor "Digium"		Certified Asterisk Search vendor "Digium" for product "Certified Asterisk"				13.21.0 Search vendor "Digium" for product "Certified Asterisk" and version "13.21.0"		cert2		Affected
Digium Search vendor "Digium"		Certified Asterisk Search vendor "Digium" for product "Certified Asterisk"				13.21.0 Search vendor "Digium" for product "Certified Asterisk" and version "13.21.0"		cert3		Affected
Digium Search vendor "Digium"		Certified Asterisk Search vendor "Digium" for product "Certified Asterisk"				13.21.0 Search vendor "Digium" for product "Certified Asterisk" and version "13.21.0"		cert4		Affected
Digium Search vendor "Digium"		Certified Asterisk Search vendor "Digium" for product "Certified Asterisk"				13.21.0 Search vendor "Digium" for product "Certified Asterisk" and version "13.21.0"		rc1		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				8.0 Search vendor "Debian" for product "Debian Linux" and version "8.0"		-		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