qmail: qmail-verify as used in netqmail 1.06 is prone to an information disclosure vulnerability
CVE-2020-3812 is fixed in 2 products on 1 platform, first by qmail 1.06-6.2~deb10u1build0.18.04.1, released May 26, 2020. It is not reported as exploited. Patch Radar priority: Routine.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| qmail · Ubuntu 18.04.6 LTS (bionic) | 1.06-6.2~deb10u1build0.18.04.1 | qmail 1.06-6.2~deb10u1build0.18.04.1 | May 26, 2020 |
| qmail · Ubuntu 20.04 LTS (focal) | 1.06-6.2~deb10u1build0.20.04.1 | qmail 1.06-6.2~deb10u1build0.20.04.1 | May 26, 2020 |
| qmail-uids-gids · Ubuntu 18.04.6 LTS (bionic) | 1.06-6.2~deb10u1build0.18.04.1 | qmail-uids-gids 1.06-6.2~deb10u1build0.18.04.1 | May 26, 2020 |
| qmail-uids-gids · Ubuntu 20.04 LTS (focal) | 1.06-6.2~deb10u1build0.20.04.1 | qmail-uids-gids 1.06-6.2~deb10u1build0.20.04.1 | May 26, 2020 |
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