CVE-2018-1002203

Unzipper vulnerability

CVSS

5.5

EPSS

11.9%

EPSS pct

96th

Exploited

No known

unzipper npm library before 0.8.13 is vulnerable to directory traversal, allowing attackers to write to arbitrary files via a ../ (dot dot slash) in a Zip archive entry that is mishandled during extraction. This vulnerability is also known as 'Zip-Slip'.

Affected vendor

Unzipper Project

Affected product

Unzipper

CVSS vector

CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

Weakness type (CWE)

CWE-22 — Path Traversal

Published

2018-07-25

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable with local access, low attack complexity, requiring no privileges, user interaction. Successful exploitation leads to high impact to integrity.

Its EPSS score of 11.9% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 96% of all scored CVEs.

Check your external exposure to CVE-2018-1002203

Confirm whether Unzipper Project Unzipper is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2018-1002203.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2018-1002203

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2018-1002203 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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