CVE-2023-6699

WP Compress – Image Optimizer [All-In-One] <= 6.10.33 - Unauthenticated Directory Traversal via css

2024-01-03 00:00

Strategic Overview

Status: Patched in 6.10.34
Affected Plugin: WP Compress – Instant Performance & Speed Optimization
Affected Version: <= 6.10.33
CVSS: 9.1Critical
Weakness type: CWE-24 · Path Traversal: '../filedir'
CVE: CVE-2023-6699

View all WP Compress – Instant Performance & Speed Optimization vulnerabilities

At a glance

CVE-2023-6699 is a critical-severity Path Traversal: '../filedir' vulnerability in the WP Compress WordPress plugin, affecting versions <= 6.10.33. It carries a CVSS score of 9.1 (reachable over the network; low attack complexity; high confidentiality, integrity impact). Exploitation requires no authentication. The issue is fixed in version 6.10.34; sites on affected versions should update now. Disclosed January 2024, reported by Krzysztof Zając.

Vulnerability Overview

The WP Compress – Image Optimizer [All-In-One] plugin for WordPress is vulnerable to Directory Traversal in all versions up to, and including, 6.10.33 via the css parameter. This makes it possible for unauthenticated attackers to read the contents of arbitrary files on the server, which can contain sensitive information.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no privileges on the target site, and no interaction from a victim user. A successful exploit has high impact on confidentiality, integrity.

CWE-24: Path Traversal: '../filedir'

The product uses external input to construct a pathname that should be within a restricted directory, but it does not properly neutralize ../ sequences that can resolve to a location that is outside of that directory.

Remediation

Update to version 6.10.34, or a newer patched version

How does WordSec protect against this?

This one needs no account at all, which puts it outside what login hardening can reach; WordSec's login security narrows the account-level paths around it, and the firewall is what inspects the request itself. None of that substitutes for the fix: WP Compress 6.10.34 closes this, and updating the plugin is the step that ends it.

Login Security
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2023-6699 https://www.wordfence.com/threat-intel/vulnerabilities/id/defb87dd-bf5f-411f-b948-699337d05d44 https://nvd.nist.gov/vuln/detail/CVE-2023-6699

Related records

Other vulnerabilities in WP Compress – Instant Performance & Speed Optimization

CVSS Vector

9.1

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityNone

This record contains material that is subject to copyright

CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE®). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy.

https://www.cve.org/Legal/TermsOfUse

Defiant hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute this software vulnerability information. Any copy of the software vulnerability information you make for such purposes is authorized provided that you include a hyperlink to this vulnerability record and reproduce Defiant's copyright designation and this license in any such copy.

https://www.wordfence.com/wordfence-intelligence-terms-and-conditions/