CVE-2019-11049
MEDIUM severity · CVSS 6.5 · Double free
6.5CVSS MEDIUM
Summary
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.
Impact & exploitability
Attack vectorNetwork
Attack complexityHigh
Privileges requiredNone
User interactionNone
Confidentiality impactNone
Integrity impactLow
Availability impactHigh
Exploit probability (EPSS)4%
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H
Recommendation
Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.
Official patch: https://bugs.php.net/bug.php?id=78943 ↗
Additional information
- NVD record
- https://bugs.php.net/bug.php?id=78943Patch
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/N7GCOAE6KVHYJ3UQ4KLPLTGSLX6IRVRN/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XWRQPYXVG43Q7DXMXH6UVWMKWGUW552F/
- https://seclists.org/bugtraq/2020/Feb/27Advisory
- https://security.netapp.com/advisory/ntap-20200103-0002/Advisory
- https://www.debian.org/security/2020/dsa-4626Advisory
- https://www.tenable.com/security/tns-2021-14Advisory