Input validation error in PHP - CVE-2019-11044

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Main Vulnerability Database Vulnerabilities #VU34943

Input validation error in PHP - CVE-2019-11044

Published: December 23, 2019 / Updated: August 8, 2020


Vulnerability identifier: #VU34943
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2019-11044
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.

In PHP versions 7.2.x below 7.2.26, 7.3.x below 7.3.13 and 7.4.0 on Windows, PHP link() function accepts filenames with embedded byte and treats them as terminating at that byte. This could lead to security vulnerabilities, e.g. in applications checking paths that the code is allowed to access.


Affected software

PHP
Tenable.sc
Fedora
php

How to mitigate CVE-2019-11044

Install update from vendor's website.

Tenable.sc - update to 5.19.0
php - addressed in versions 7.3.13-1.fc30, 7.3.13-1.fc31

External References

Related Security Bulletins