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.)

Related CPE's

a

pureftpd

pure-ftpd

Vulnerable

References

https://github.com/jedisct1/pure-ftpd/commit/37ad222868e52271905b94afea4fc780d83294b4

PatchThird Party Advisory

https://github.com/jedisct1/pure-ftpd/compare/1.0.49...1.0.50

PatchThird Party Advisory

https://github.com/jedisct1/pure-ftpd/pull/158

ExploitThird Party Advisory

https://github.com/jedisct1/pure-ftpd/commit/37ad222868e52271905b94afea4fc780d83294b4

PatchThird Party Advisory

https://github.com/jedisct1/pure-ftpd/compare/1.0.49...1.0.50

PatchThird Party Advisory

https://github.com/jedisct1/pure-ftpd/pull/158

ExploitThird Party Advisory

https://lists.debian.org/debian-lts-announce/2025/11/msg00003.html

Weaknesses

[email protected]

Primary
CWE-434

CVSS impact metrics

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

7.5 · High

Information

Source identifier

[email protected]

Vulnerability status

Modified

Published

2021-09-05T17:15:15.080Z

4 years ago

Last modified

2025-11-04T00:15:31.910Z

3 months ago