WordPress Core < 5.0.1 - PHAR Unserialization

2018-09-06 00:00

Sam Thomas

Strategic Overview

Status

Patched in 3.7.28

Affected CoreWordPress 5.0

Affected Version3.7 – 5.0 · 15 branches

CVSS7.5High

CVECVE-2018-1000773

View all WordPress 5.0 vulnerabilities

Vulnerability Overview

WordPress Core versions before 5.0.1 contain a CWE-20 Input Validation vulnerability in thumbnail processing that can result in remote code execution due to an incomplete fix for CVE-2017-1000600. This attack appears to be exploitable via thumbnail upload by an authenticated user and may require additional plugins in order to be exploited however this has not been confirmed at this time.

Technical Analysis

REMEDIATION: Update to one of the following versions, or a newer patched version: 3.7.28, 3.8.28, 3.9.26, 4.0.25, 4.1.25, 4.2.22, 4.3.18, 4.4.17, 4.5.16, 4.6.13, 4.7.12, 4.8.8, 4.9.9, 5.0.1 --- IDENTIFIER: CWE-502 (Deserialization of Untrusted Data) The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.

External References

https://www.cve.org/CVERecord?id=CVE-2018-1000773 https://www.wordfence.com/threat-intel/vulnerabilities/id/1f846ffa-0dfa-4549-845a-7884a390462a

CVSS Vector

7.5

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

Base

Attack VectorNetwork
Attack ComplexityHigh
Privileges RequiredLow
User InteractionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

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