Remote code execution in PHP mail() function



| Updated: 2021-07-22
Risk High
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2019-11049
CWE-ID CWE-415
Exploitation vector Network
Public exploit N/A
Vulnerable software
 PHP
Universal components / Libraries / Scripting languages

Vendor PHP Group

Security Bulletin

This security bulletin contains one high risk vulnerability.

1) Double Free

EUVDB-ID: #VU55265

Risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2019-11049

CWE-ID: CWE-415 - Double Free

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error within mail() function implementation. A remote attacker can pass specially crafted header in lowercase, trigger double free error and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

PHP: 7.3.0alpha1 - 7.3.12

CPE2.3 External links

https://bugs.php.net/bug.php?id=78943
https://security.netapp.com/advisory/ntap-20200103-0002/
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://www.debian.org/security/2020/dsa-4626


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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