VulnerabilityModified
CVE-2019-14751
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.
HIGH 7.5EPSS 5.67%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (5.67%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.0
- 7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- EPSS
- 5.67% probability · 93th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-22
- Affected
- nltk/nltk
- Source
- cve@mitre.org
References
- http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00054.html
- http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00001.html
- https://github.com/mssalvatore/CVE-2019-14751_PoCExploit, Patch, Third Party Advisory
- https://github.com/nltk/nltk/blob/3.4.5/ChangeLogRelease Notes
- https://github.com/nltk/nltk/commit/f59d7ed8df2e0e957f7f247fe218032abdbe9a10Patch
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QI4IJGLZQ5S7C5LNRNROHAO2P526XE3D/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZGZSSEJH7RHH3RBUEVWWYT75QU67J7SE/
- https://salvatoresecurity.com/zip-slip-in-nltk-cve-2019-14751/Exploit, Patch, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00054.html
- http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00001.html
- https://github.com/mssalvatore/CVE-2019-14751_PoCExploit, Patch, Third Party Advisory
- https://github.com/nltk/nltk/blob/3.4.5/ChangeLogRelease Notes
- https://github.com/nltk/nltk/commit/f59d7ed8df2e0e957f7f247fe218032abdbe9a10Patch
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QI4IJGLZQ5S7C5LNRNROHAO2P526XE3D/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZGZSSEJH7RHH3RBUEVWWYT75QU67J7SE/
- https://salvatoresecurity.com/zip-slip-in-nltk-cve-2019-14751/Exploit, Patch, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.