What’s Vulnerable › Vulnerabilities

CVE-2020-3812

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2020-05-26 · updated 2026-06-17
• Weakness: CWE-269

Description

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.

Affected products

• Canonical Ubuntu Linux: 20.04
• Debian Linux: 8.0, 9.0, 10.0
• Netqmail: 1.06

References

• https://bugs.debian.org/961060
• https://lists.debian.org/debian-lts-announce/2020/06/msg00002.html
• https://usn.ubuntu.com/4556-1/
• https://www.debian.org/security/2020/dsa-4692
• https://www.openwall.com/lists/oss-security/2020/05/19/8
• https://bugs.debian.org/961060
• https://lists.debian.org/debian-lts-announce/2020/06/msg00002.html
• https://usn.ubuntu.com/4556-1/
• https://www.debian.org/security/2020/dsa-4692
• https://www.openwall.com/lists/oss-security/2020/05/19/8

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