CVE-2019-11049

medium Tenable
CVSS v3 Base Score
6.5
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H
EPSS Score
4.2%
Exploitation probability in 30 days
Top 10% most likely to be exploited
Attack Characteristics
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Confidentiality
None
Integrity
Low
Availability
High
Published: December 23, 2019 (2451 days ago)
Last Modified: August 17, 2026
Vendor: Tenable
Source: NVD

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.

CWE

CWE-415

Affected Products

php phpfedoraproject fedoradebian debian linuxtenable security center

References

🔗 bugs.php.net 🔗 lists.fedoraproject.org 🔗 lists.fedoraproject.org 🔗 seclists.org 🔗 security.netapp.com