| Name | CVE-2020-9274 |
| Description | An issue was discovered in Pure-FTPd 1.0.49. An uninitialized pointer vulnerability has been detected in the diraliases linked list. When the *lookup_alias(const char alias) or print_aliases(void) function is called, they fail to correctly detect the end of the linked list and try to access a non-existent list member. This is related to init_aliases in diraliases.c. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-2123-1 |
| Debian Bugs | 952666 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| pure-ftpd (PTS) | buster | 1.0.47-3 | vulnerable |
| bullseye | 1.0.49-4.1 | fixed |
| bookworm | 1.0.50-2.1 | fixed |
| sid, trixie | 1.0.50-2.2 | fixed |
The information below is based on the following data on fixed versions.
Notes
[buster] - pure-ftpd <no-dsa> (Minor issue)
[stretch] - pure-ftpd <no-dsa> (Minor issue)
https://github.com/jedisct1/pure-ftpd/commit/8d0d42542e2cb7a56d645fbe4d0ef436e38bcefa
though the CVE description does not specifically say, the issue seems to be an
out-of-bounds memory read which may result in information disclosure;
probably not the end of the world, but it is made worse by use of the rather
unsafe strcmp() instead of strncmp() in the vulnerable functions