Information disclosure through processing of external XML entities

CVE-2019-8126 → View on GitHub ↗ View on CVE.org ↗ View on NVD ↗

Description

An XML entity injection vulnerability exists in Magento 2.2 prior to 2.2.10, Magento 2.3 prior to 2.3.3 or 2.3.2-p1. An authenticated admin user can craft document type definition for an XML representing XML layout. The crafted document type definition and XML layout allow processing of external entities which can lead to information disclosure.

As per the Magento Release 2.3.3, if you have already implemented the pre-release version of this patch (2.3.2-p1), it is highly recommended to promptly upgrade to 2.3.2-p2.

Basic information

Type
reviewed
Severity
medium
Advisory on GitHub
Open advisory ↗
Repository advisory
—
Source code
Not specified
Published (advisory)
2019-11-12 22:59:24 UTC
Updated
2024-02-12 11:49:42 UTC
GitHub reviewed
2019-11-12 22:13:59 UTC
NVD published
2019-11-05

EPSS Score

Score Percentile
0.11% 29.46%

CVSS Scores

Base score Version Severity Vector
4.9 3.1 —
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:H)
They need powerful rights—admin, root, or similar—before this pays off.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.

Identifiers

Type Value
GHSA GHSA-427g-2r83-3ccm ↗
CVE CVE-2019-8126 ↗

CWEs

CWE id Name
CWE-611 Improper Restriction of XML External Entity Reference
CWE-776 Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion')

Affected packages (2)

Vulnerable version ranges and first patched releases as published by GitHub.

Ecosystem Package Vulnerable range First patched Vulnerable functions
composer magento/community-edition >= 2.2, < 2.2.10 2.2.10 —
composer magento/community-edition >= 2.3, < 2.3.2-p2 2.3.2-p2 —

References

cvelogic Threat Intelligence