Description
In Pure-FTPd 1.0.49, a stack exhaustion issue was discovered in the listdir function in ls.c.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 13 | pure-ftpd | 1.0.49-2 | — |
| Debian 12 | pure-ftpd | 1.0.49-2 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | pure-ftpd | No fix yet | — |
| Ubuntu 16.04 LTS | pure-ftpd | No fix yet | — |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | pure-ftpd | 1.0.50-1.1 | openSUSE-SU-2024:11773-1 |
Automated scanner template
A ready-made Nuclei template detects this vulnerability automatically. Vulnerabilities with public scanner templates are typically probed across the internet soon after the template appears — exposed systems should be patched first.
- Pure-FTPd < 1.0.50 - DoS via Resource Exhaustion network/cves/2019/CVE-2019-20176.yaml
Source: projectdiscovery/nuclei-templates (MIT) — updated daily. Only links are listed.
Advisories 1
- openSUSE-SU-2024:11773-1 pure-ftpd-1.0.50-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
References
- https://github.com/jedisct1/pure-ftpd/commit/aea56f4bcb9948d456f3fae4d044fd3fa2e19706
- FEDORA-2020-74b71e5873 vendor-advisory
- FEDORA-2020-85fa9f07f4 vendor-advisory