#VU22198 OS Command Injection in pacman - CVE-2019-18183
Published: October 23, 2019
Vulnerability identifier: #VU22198
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2019-18183
CWE-ID: CWE-78
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
pacman
pacman
Software vendor:
Arch Linux
Arch Linux
Description
The vulnerability allows a remote attacker to execute arbitrary shell commands on the target system.
The vulnerability exists due to improper input validation within the the apply_deltas() function in lib/libalpm/sync.c file in pacman. A remote attacker can trick the victim to enable a non-default delta feature, retrieve an attacker-controlled crafted database and package and execute arbitrary OS commands on the system with privileges of the current user.
Remediation
Install updates from vendor's website.