Multiple vulnerabilities in Asterisk Open Source and Certified Asterisk

Published: 2022-04-19

Risk	High
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2022-26651 CVE-2022-26499
CWE-ID	CWE-89 CWE-918
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	Asterisk Open Source Server applications / Conferencing, Collaboration and VoIP solutions Certified Asterisk Server applications / Conferencing, Collaboration and VoIP solutions
Vendor	Digium (Linux Support Services)

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) SQL injection

EUVDB-ID: #VU62391

Risk: High

CVSSv3.1: 7.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-26651

CWE-ID: CWE-89 - Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary SQL queries in database.

The vulnerability exists due to insufficient sanitization of user-supplied data in func_odbc module. A remote non-attacker can send a specially crafted request to the affected application and execute arbitrary SQL commands within the application database.

Successful exploitation of this vulnerability may allow a remote attacker to read, delete, modify data in database and gain complete control over the affected application.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Asterisk Open Source: 16.0.0 - 19.3.1

Certified Asterisk: 16.3-cert1 - 16.8-cert13

External links

http://downloads.asterisk.org/pub/security/AST-2022-003.html

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Server-Side Request Forgery (SSRF)

EUVDB-ID: #VU62390

Risk: Medium

CVSSv3.1: 5.1 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-26499

CWE-ID: CWE-918 - Server-Side Request Forgery (SSRF)

Exploit availability: No

Description

The disclosed vulnerability allows a remote attacker to perform SSRF attacks.

The vulnerability exists due to insufficient validation of user-supplied input, if STIR/SHAKEN is used. A remote attacker can send a specially crafted HTTP request and trick the application to initiate requests to arbitrary systems.

Successful exploitation of this vulnerability may allow a remote attacker gain access to sensitive data, located in the local network or send malicious requests to other servers from the vulnerable system.