7.5

CVE-2021-40524

Exploit
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.)
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Pureftpd ≫ Pure-ftpd Version >= 1.0.23 < 1.0.50
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 4.29% 0.899
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 7.5 3.9 3.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
nvd@nist.gov 5 10 2.9
AV:N/AC:L/Au:N/C:N/I:N/A:P
CWE-434 Unrestricted Upload of File with Dangerous Type

The product allows the upload or transfer of dangerous file types that are automatically processed within its environment.

https://github.com/jedisct1/pure-ftpd/commit/37ad222868e52271905b94afea4fc780d83294b4
Patch
Third Party Advisory
https://github.com/jedisct1/pure-ftpd/compare/1.0.49...1.0.50
Patch
Third Party Advisory
https://github.com/jedisct1/pure-ftpd/pull/158
Third Party Advisory
Exploit
https://lists.debian.org/debian-lts-announce/2025/11/msg00003.html