WordPress Core <= 4.5.3 - Denial of Service

2016-08-22 00:00

Yorick Koster,

Strategic Overview

Status

Patched in 4.6

Affected CoreWordPress 4.6

Affected Version< 4.6

CVSS6.5Medium

CVECVE-2016-6896

View all WordPress 4.6 vulnerabilities

Vulnerability Overview

Directory traversal vulnerability in the wp_ajax_update_plugin function in wp-admin/includes/ajax-actions.php in WordPress 4.5.3 allows remote authenticated users to cause a denial of service or read certain text files via a .. (dot dot) in the plugin parameter to wp-admin/admin-ajax.php, as demonstrated by /dev/random read operations that deplete the entropy pool.

Technical Analysis

REMEDIATION: Update to version 4.6, or a newer patched version --- IDENTIFIER: CWE-400 (Uncontrolled Resource Consumption) The product does not properly control the allocation and maintenance of a limited resource.

External References

https://www.cve.org/CVERecord?id=CVE-2016-6896 https://www.wordfence.com/threat-intel/vulnerabilities/id/83f8adea-4735-4c72-b274-58e813cab6ab

CVSS Vector

6.5

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeUnchanged
ConfidentialityNone
IntegrityNone
AvailabilityHigh

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