Privilege escalation in Netqmail
CVE-2020-3812
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.
Vulnerability class: Privilege Escalation
EPSS: 0.004 (34.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
Affected products
- Netqmail — versions 1.06
- Canonical Ubuntu_linux — versions 20.04
- Debian Debian_linux — versions 8.0, 9.0, 10.0
- Debian Netqmail — versions 1.06
Weakness classification (CWE)
References
- security@debian.org (Exploit, Patch, Mailing List, Third Party Advisory, x_refsource_MISC)
- security@debian.org (Third Party Advisory, x_refsource_MISC, Issue Tracking)
- security@debian.org (Third Party Advisory, x_refsource_MISC)
- security@debian.org (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
- security@debian.org (x_refsource_UBUNTU, vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-3812?
- CVE-2020-3812 is a medium-severity vulnerability in Netqmail, classified under Improper Privilege Management. CVSS score: 5.5/10. Published 2020-05-26.
- How severe is CVE-2020-3812?
- Medium severity. CVSS v3 base score is 5.5 out of 10.