CVE-2017-6514

WordPress Core < 4.7.2 - Path Disclosure

2017-01-01 00:00

Strategic Overview

Status: Patched in 3.7.18
Affected Core: WordPress 4.7
Affected Version: 3.7 – 4.7.1 · 12 branches
CVSS: 4.3Medium
Weakness type: CWE-200 · Exposure of Sensitive Information to an Unauthorized Actor
CVE: CVE-2017-6514

At a glance

CVE-2017-6514 is a medium-severity Exposure of Sensitive Information to an Unauthorized Actor vulnerability in the WordPress 4.7 WordPress release line, affecting 3.7 – 4.7.1 · 12 branches. It carries a CVSS score of 4.3 (reachable over the network; low attack complexity). The issue is fixed in version 3.7.18; sites on affected versions should update now. Disclosed January 2017.

Vulnerability Overview

WordPress 4.7.2 mishandles listings of post authors, which allows remote attackers to obtain sensitive information (Path Disclosure) via a /wp-json/oembed/1.0/embed?url= request, related to the "author_name":" substring.

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 interaction from a victim user.

CWE-200: Exposure of Sensitive Information to an Unauthorized Actor

WordPress 4.7 3.7 – 4.7.1 · 12 branches carries this weakness at author_name, and reaching it takes a caller who can reach the endpoint. Sensitive information exposure means data the application intended to keep internal is returned to a caller who should not be able to see it.

The disclosed data — credentials, tokens, customer records or internal paths — is usually worth more as material for a follow-up attack than as an end in itself. For WordPress 4.7 the fix is 3.7.18: builds 3.7 – 4.7.1 · 12 branches are affected, anything from 3.7.18 onward is not.

Remediation

Update to one of the following versions, or a newer patched version: 3.7.18, 3.8.18, 3.9.16, 4.0.15, 4.1.15, 4.2.12, 4.3.8, 4.4.7, 4.5.6, 4.6.3, 4.7.2

How does WordSec protect against this?

The fix is the thing that ends this: updating to 3.7.18 is the step that ends it.

Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2017-6514 https://www.wordfence.com/threat-intel/vulnerabilities/id/8bed0637-6d1b-4c30-b87c-01c88d573ae6 https://nvd.nist.gov/vuln/detail/CVE-2017-6514

Related records

Same weakness class

Other vulnerabilities in WordPress 4.7

CVSS Vector

4.3

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeUnchanged
ConfidentialityLow
IntegrityNone
AvailabilityNone

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