Cyber Resilience

CVE-2023-6821

MediumPublic PoC

Published: 18 March 2024

Published
18 March 2024
Modified
27 March 2025
KEV Added
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Patch
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CVSS Score v3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
EPSS Score 0.0022 44.3th percentile
Risk Priority 13 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2023-6821 is a medium-severity Missing Authorization (CWE-862) vulnerability in Bestwebsoft Error Log Viewer. Its CVSS base score is 6.5 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique File and Directory Discovery (T1083); ranked at the 44.3th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

EU & UK References

Vulnerability details

The Error Log Viewer by BestWebSoft WordPress plugin before 1.1.3 is affected by a Directory Listing issue, allowing users to read and download PHP logs without authorization

CWE(s)
CWE-862

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1083 File and Directory Discovery Discovery
Adversaries may enumerate files and directories or may search in specific locations of a host or network share for certain information within a file system.
attack.mitre.org →
T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
T1654 Log Enumeration Discovery
Adversaries may enumerate system and service logs to find useful data.
attack.mitre.org →
Why these techniques?

Directory listing vulnerability enables unauthenticated access to PHP log files via public-facing WordPress plugin (T1190), facilitating file and directory discovery (T1083) and log enumeration for sensitive data exposure (T1654).

Affected Assets

bestwebsoft
error log viewer
≤ 1.1.3

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

AC-1 Policy and Procedures
addresses: CWE-862

Requiring an access control policy ensures authorization checks are defined and applied for critical functions.

AC-13 Supervision and Review — Access Control
addresses: CWE-862

Reviews of access controls detect missing authorization checks on critical functions or resources.

AC-14 Permitted Actions Without Identification or Authentication
addresses: CWE-862

Documenting permitted unauthenticated actions prevents missing authorization by making all exceptions explicit and subject to organizational review.

AC-16 Security and Privacy Attributes
addresses: CWE-862

Requiring attribute association with information prevents authorization from being performed without necessary security or privacy context.

AC-17 Remote Access
addresses: CWE-862

Mandating authorization prior to allowing remote connections addresses missing authorization for remote access.

AC-18 Wireless Access
addresses: CWE-862

Mandating authorization before wireless connections are allowed prevents missing authorization for wireless access.

AC-19 Access Control for Mobile Devices
addresses: CWE-862

The control requires authorization before allowing mobile device connections, directly mitigating missing authorization for system access.

AC-2 Account Management
addresses: CWE-862

Requiring approvals for account creation and specifying authorizations ensures authorization is not missing for system access.

References