CVE-2019-11044 - CVE House
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Status published Low CVE-2019-11044

link() silently truncates after a null byte on Windows

Vulnerability Description

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 \0 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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Submitted by ryat at php.net

References

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Affected Vendor

Affected Software

PHP
Vulnerable Versions:
7.2.x, 7.3.x, 7.4.x

Timeline

Official Publish: December 23rd, 2019
Last Modified: September 17th, 2024
Added to House: July 20th, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

Weaknesses (CWE)

CWE-170

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.