CVE-2019-14751
unknown
CVSS v3
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CVSS v4 NEW
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VIR risk
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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.
Predictions
Exploit likelihood
30%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
Debian Fixed 5 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 3.4.5-1 |
| sid | Fixed | 3.4.5-1 |
| forky | Fixed | 3.4.5-1 |
| bullseye | Fixed | 3.4.5-1 |
| bookworm | Fixed | 3.4.5-1 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2019-14751
- https://github.com/nltk/nltk/commit/f59d7ed8df2e0e957f7f247fe218032abdbe9a10
- https://github.com/advisories/GHSA-mr7p-25v2-35wr
- https://github.com/mssalvatore/CVE-2019-14751_PoC
- https://github.com/nltk/nltk
- https://github.com/nltk/nltk/blob/3.4.5/ChangeLog
- https://github.com/pypa/advisory-database/tree/main/vulns/nltk/PYSEC-2019-106.yaml
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QI4IJGLZQ5S7C5LNRNROHAO2P526XE3D
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZGZSSEJH7RHH3RBUEVWWYT75QU67J7SE
- https://salvatoresecurity.com/zip-slip-in-nltk-cve-2019-14751
- http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00054.html
- http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00001.html
- https://salvatoresecurity.com/zip-slip-in-nltk-cve-2019-14751/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZGZSSEJH7RHH3RBUEVWWYT75QU67J7SE/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QI4IJGLZQ5S7C5LNRNROHAO2P526XE3D/
- https://security-tracker.debian.org/tracker/CVE-2019-14751
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.