high7.5
CVE-2021-40524
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 denia…
Impact
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 products
| Vendor | Product | Affected versions |
|---|---|---|
| Pureftpd | Pure-Ftpd | from 1.0.23 before 1.0.50 |
Weakness classification
References
- NVD record
- CVE.org record
- https://github.com/jedisct1/pure-ftpd/commit/37ad222868e52271905b94afea4fc780d83294b4
- https://github.com/jedisct1/pure-ftpd/compare/1.0.49...1.0.50
- https://github.com/jedisct1/pure-ftpd/pull/158
- https://github.com/jedisct1/pure-ftpd/commit/37ad222868e52271905b94afea4fc780d83294b4
- https://github.com/jedisct1/pure-ftpd/compare/1.0.49...1.0.50
- https://github.com/jedisct1/pure-ftpd/pull/158
- https://lists.debian.org/debian-lts-announce/2025/11/msg00003.html