WordPress Core < 4.8.2 - Directory Traversal via Customizer

2017-09-19 00:00

Weston Ruter

Strategic Overview

Status

Patched in 3.7.22

Affected CoreWordPress 4.8

Affected Version3.7 – 4.8.1 · 13 branches

CVSS4.9Medium

CVECVE-2017-14722

View all WordPress 4.8 vulnerabilities

Vulnerability Overview

Before version 4.8.2, WordPress allowed a Directory Traversal attack in the Customizer component via a crafted theme filename.

Technical Analysis

REMEDIATION: Update to one of the following versions, or a newer patched version: 3.7.22, 3.8.22, 3.9.20, 4.0.19, 4.1.19, 4.2.16, 4.3.12, 4.4.11, 4.5.10, 4.6.7, 4.7.6, 4.8.2 --- IDENTIFIER: CWE-22 (Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')) The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.

External References

https://www.cve.org/CVERecord?id=CVE-2017-14722 https://www.wordfence.com/threat-intel/vulnerabilities/id/bbe9eed9-9a96-47da-95fa-b942817a9d4f

CVSS Vector

4.9

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredHigh
User InteractionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityNone
AvailabilityNone

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