CVE-2019-11044

link() silently truncates after a null byte on Windows

Severity Score

7.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

En PHP versiones 7.2.x por debajo de 7.2.26, versiones 7.3.x por debajo de 7.3.13 y 7.4.0 en Windows, la función PHP link() acepta nombres de archivo con /0 byte insertado y los trata como terminando en ese byte. Esto podría conllevar a vulnerabilidades de seguridad, por ejemplo en aplicaciones que comprueban las rutas a las que se permite acceder al código.

*Credits: Submitted by ryat at php.net

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2019-04-09 CVE Reserved
2019-12-23 CVE Published
2023-11-08 EPSS Updated
2024-09-17 CVE Updated
2024-09-17 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-170: Improper Null Termination

CAPEC

References (5)

URL	Tag	Source
https://security.netapp.com/advisory/ntap-20200103-0002	Third Party Advisory
https://www.tenable.com/security/tns-2021-14	Third Party Advisory

URL	Date	SRC
https://bugs.php.net/bug.php?id=78862	2024-09-17

URL	Date	SRC

URL	Date	SRC
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/N7GCOAE6KVHYJ3UQ4KLPLTGSLX6IRVRN	2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XWRQPYXVG43Q7DXMXH6UVWMKWGUW552F	2023-11-07

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				>= 7.2.0 <= 7.2.26 Search vendor "Php" for product "Php" and version " >= 7.2.0 <= 7.2.26"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				>= 7.3.0 <= 7.3.13 Search vendor "Php" for product "Php" and version " >= 7.3.0 <= 7.3.13"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				7.4.0 Search vendor "Php" for product "Php" and version "7.4.0"		-		Affected
Tenable Search vendor "Tenable"		Securitycenter Search vendor "Tenable" for product "Securitycenter"				< 5.19.0 Search vendor "Tenable" for product "Securitycenter" and version " < 5.19.0"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				30 Search vendor "Fedoraproject" for product "Fedora" and version "30"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				31 Search vendor "Fedoraproject" for product "Fedora" and version "31"		-		Affected