PT-2019-18737 · Joomla · Joomla!

David Jardin · Published 2019-02-12 · Updated 2022-05-13 · CVE-2019-7743

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions Joomla! versions prior to 3.9.3

Description An issue was discovered where the phar:// stream wrapper can be used for object injection attacks due to the lack of a protection mechanism. This allows the phar:// handler to be used for non .phar-files, potentially leading to exploitation.

Recommendations For versions prior to 3.9.3, update to version 3.9.3 or later to resolve the issue. As a temporary workaround, consider restricting access to the phar:// stream wrapper to minimize the risk of object injection attacks.

Fix

Deserialization of Untrusted Data

Weakness Enumeration

CWE-502

CWE-917

Related Identifiers

CVE-2019-7743

GHSA-5M3W-RVVH-8FX6

Affected Products

Joomla!

References · 9

• https://osv.dev/vulnerability/CVE-2019-7743 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2019-7743 · Security Note
• https://developer.joomla.org/security-centre/770-20190206-core-implement-the-typo3-phar-stream-wrapper · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-5m3w-rvvh-8fx6 · Vendor Advisory
• https://github.com/joomla/joomla-cms · Note
• https://github.com/joomla/joomla-cms/issues/23907 · Note
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-7743 · Note
• https://web.archive.org/web/20210730211655/https://securityfocus.com/bid/107050 · Note
• http://securityfocus.com/bid/107050 · Note