Information disclosure in netqmail and Debian Linux - CVE-2020-3812
Published: May 26, 2020 / Updated: August 8, 2020
Vulnerability identifier: #VU34381
CSH Severity: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2020-3812
CWE-ID: CWE-200
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
netqmail
Debian Linux
netqmail
Debian Linux
Software vendor:
qmail
Debian
qmail
Debian
Description
The vulnerability allows a local authenticated user to gain access to sensitive information.
qmail-verify as used in netqmail 1.06 is prone to an information disclosure vulnerability. A local attacker can test for the existence of files and directories anywhere in the filesystem because qmail-verify runs as root and tests for the existence of files in the attacker's home directory, without dropping its privileges first.
Remediation
Install update from vendor's website.