CVE-2021-40524
HIGH7.5EPSS 30.2%pure-ftpd - security update
Published: 9/5/2021Modified: 4/28/2026
Description
In Pure-FTPd before 1.0.50, an incorrect max_filesize quota mechanism in the server allows attackers to upload files of unbounded size, which may lead to denial of service or a server hang. This occurs because a certain greater-than-zero test does not anticipate an initial -1 value. (Versions 1.0.23 through 1.0.49 are affected.)
Affected packages (2)
- Debian/pure-ftpdfrom 0, < 1.0.49-4.1+deb11u1
- Debian/pure-ftpdfrom 0, < 1.0.49-4.1+deb11u1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |