#VU52777 Code Injection in composer - CVE-2021-29472
Published: April 30, 2021
Vulnerability identifier: #VU52777
Vulnerability risk: High
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2021-29472
CWE-ID: CWE-94
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
composer
composer
Software vendor:
getcomposer.org
getcomposer.org
Description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to improper input validation of URLs for Mercurial repositories in the root composer.json and package source download URLs. A remote attacker can inject a specially crafted URL that will allow command execution in the HgDriver if hg/Mercurial is installed on the system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Remediation
Install updates from vendor's website.