SB2019120225 - OS Command Injection in asterisk (Alpine package)

Description

This security bulletin contains information about 1 vulnerability.

1) OS Command Injection (CVE-ID: CVE-2019-18610)

CWE-ID: CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber

The vulnerability allows a remote attacker to execute arbitrary shell commands on the target system.

The vulnerability exists due to improper input validation in the "manager.c" module. A remote authenticated Asterisk Manager Interface (AMI) user without “system” authorization can use a specially crafted “Originate” AMI request to execute arbitrary system commands.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Remediation

Install update from vendor's website.

References

• https://git.alpinelinux.org/aports/commit/?id=25ffac29e0a3e87794220e04795def02f66a3e81
• https://git.alpinelinux.org/aports/commit/?id=38664bd7a807d4b24c0e0482bdb1c041e783469e
• https://git.alpinelinux.org/aports/commit/?id=6a36d2a527e316e6506513ef5e5c60b2934f0962