Input validation error in PHP



| Updated: 2020-08-04
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2019-11045
CWE-ID CWE-20
Exploitation vector Network
Public exploit N/A
Vulnerable software
 PHP
Universal components / Libraries / Scripting languages

Debian Linux
Operating systems & Components / Operating system

Fedora
Operating systems & Components / Operating system

Vendor PHP Group
Debian
Fedoraproject

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Input validation error

EUVDB-ID: #VU33363

Risk: Medium

CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2019-11045

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

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, PHP DirectoryIterator class 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.

Mitigation

Install update from vendor's website.

Vulnerable software versions

PHP: 7.4.0

Debian Linux: 7.4.0 - 8.0

Fedora: 7.4.0 - 31

CPE2.3 External links

https://lists.opensuse.org/opensuse-security-announce/2020-01/msg00036.html
https://bugs.php.net/bug.php?id=78863
https://lists.debian.org/debian-lts-announce/2019/12/msg00034.html
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/N7GCOAE6KVHYJ3UQ4KLPLTGSLX6IRVRN/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XWRQPYXVG43Q7DXMXH6UVWMKWGUW552F/
https://seclists.org/bugtraq/2020/Feb/27
https://seclists.org/bugtraq/2020/Feb/31
https://security.netapp.com/advisory/ntap-20200103-0002/
https://usn.ubuntu.com/4239-1/
https://www.debian.org/security/2020/dsa-4626
https://www.debian.org/security/2020/dsa-4628


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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