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
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.004 (34.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 34th percentile — 34.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Netqmail — versions 1.06
- Canonical Ubuntu Linux — versions 20.04
- Debian Linux — versions 8.0, 9.0, 10.0
- Debian Netqmail — versions 1.06
Weakness classification (CWE)
References
- www.openwall.com/lists/oss-security/2020/05/19/8 (Exploit, Patch, Mailing List, Third Party Advisory)
- bugs.debian.org/961060 (Third Party Advisory, Issue Tracking)
- www.debian.org/security/2020/dsa-4692 (Third Party Advisory)
- lists.debian.org/debian-lts-announce/2020/06/msg00002.html (mailing-list, Mailing List, Third Party Advisory)
- usn.ubuntu.com/4556-1/ (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.