Staging Environment: Content and features may be unstable or change without notice.
Advisory details: github_osv / GHSA-mr7p-25v2-35wr
Advisory ID github_osv/GHSA-mr7p-25v2-35wr
Aliases CVE-2019-14751
Summary NLTK Vulnerable To Path Traversal 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.
Status Published
Exploitability 0.5
Weighted Severity 7.8
Risk 3.9
Affected and Fixed Packages Package Details
Introduced and Fixed Package Commit Patches Package Commit Patches Details
Weaknesses (1)
CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
System Score Found at
cvssv3 7.5 https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2019/08/GHSA-mr7p-25v2-35wr/GHSA-mr7p-25v2-35wr.json
cvssv4 8.7 https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2019/08/GHSA-mr7p-25v2-35wr/GHSA-mr7p-25v2-35wr.json
generic_textual HIGH
Reference id Reference type URL
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/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/nltk/nltk/commit/f59d7ed8df2e0e957f7f247fe218032abdbe9a10
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
CVE-2019-14751 https://nvd.nist.gov/vuln/detail/CVE-2019-14751
No exploits are available.

No EPSS data available for this advisory.

Patch URL
There are no known patches.
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N Found at https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2019/08/GHSA-mr7p-25v2-35wr/GHSA-mr7p-25v2-35wr.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N Found at https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2019/08/GHSA-mr7p-25v2-35wr/GHSA-mr7p-25v2-35wr.json
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

local

physical

low

high

none

present

none

low

high

none

passive

active

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none

There are no SSVC decisions available.