ELA-1566-1 pure-ftpd security update

multiple vulnerabilities

2025-11-03
Packagepure-ftpd
Version1.0.47-3+deb10u1 (buster)
Related CVEs CVE-2019-20176 CVE-2020-9274 CVE-2020-9365 CVE-2021-40524


Multiple vulnerabilities were discovered in pure-ftpd, a secure and efficient FTP server, that could lead to data corruption, information disclosure or program crash.

CVE-2019-20176:

Stack exhaustion in the listdir function in ls.c.

CVE-2020-9274:

Uninitialized pointer in the diraliases linked list.

CVE-2020-9365:

Out-of-bounds (OOB) read in the pure_strcmp function in utils.c.

CVE-2021-40524:

Incorrect max_filesize quota mechanism in the server allows adversaries to
upload files of unbounded size.


For Debian 10 buster, these problems have been fixed in version 1.0.47-3+deb10u1.

We recommend that you upgrade your pure-ftpd packages.

Further information about Extended LTS security advisories can be found in the dedicated section of our website.