| Name | CVE-2019-14751 |
| Description | NLTK Downloader before 3.4.5 is vulnerable to a directory traversal, allowing attackers to write arbitrary files via a ../ (dot dot slash) in an NLTK package (ZIP archive) that is mishandled during extraction. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 935201 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| nltk (PTS) | buster | 3.4-1 | vulnerable |
| bullseye | 3.5-1 | fixed |
| bookworm | 3.8-1 | fixed |
| sid, trixie | 3.8.1-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| nltk | source | (unstable) | 3.4.5-1 | low | | 935201 |
Notes
[buster] - nltk <no-dsa> (Minor issue)
[stretch] - nltk <no-dsa> (Minor issue)
[jessie] - nltk <no-dsa> (Minor issue; user has to configure a compromised server)
https://salvatoresecurity.com/zip-slip-in-nltk-cve-2019-14751/
https://github.com/nltk/nltk/commit/f59d7ed8df2e0e957f7f247fe218032abdbe9a10