#VU59053 Code Injection in Logback - CVE-2021-42550
Published: December 19, 2021
Vulnerability identifier: #VU59053
Vulnerability risk: Medium
CVSSv4.0: 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:Green
CVE-ID: CVE-2021-42550
CWE-ID: CWE-94
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Logback
Logback
Software vendor:
QOS.ch
QOS.ch
Description
The vulnerability allows a remote user to execute arbitrary code on the target system.
The vulnerability exists due to improper input validation. A remote user can send a specially crafted request to the application and execute arbitrary code on the target system by tricking the application to load a malicious configuration from a remote LDAP server.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Remediation
Install updates from vendor's website.