CVE-2019-11049 Information

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Description

In PHP versions 7.3.x below 7.3.13 and 7.4.0 on Windows when supplying custom headers to mail() function due to mistake introduced in commit 78f4b4a2dcf92ddbccea1bb95f8390a18ac3342e if the header is supplied in lowercase this can result in double-freeing certain memory locations.

CVSS Vector

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

Reference

https://bugs.php.net/bug.php?id=78943 https://lists.fedoraproject.org/archives/list/[email protected]/message/N7GCOAE6KVHYJ3UQ4KLPLTGSLX6IRVRN/ https://lists.fedoraproject.org/archives/list/[email protected]/message/XWRQPYXVG43Q7DXMXH6UVWMKWGUW552F/ https://seclists.org/bugtraq/2020/Feb/27 https://security.netapp.com/advisory/ntap-20200103-0002/ https://www.debian.org/security/2020/dsa-4626

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

9.8