Double Free in Microsoft Windows
CVE-2019-11049
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.
Vulnerability class: Double Free
EPSS: 0.044 (90.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H.
Affected products
- Microsoft Windows
- Php — versions 7.4.0
- Php Group — versions 7.3.x, 7.4.x
- Tenable Securitycenter
- Debian Debian_linux — versions 10.0
- Fedoraproject Fedora — versions 30, 31
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security@php.net (Patch, Mailing List, x_refsource_MISC, Vendor Advisory)
- security@php.net (x_refsource_CONFIRM, Third Party Advisory)
- security@php.net (x_refsource_FEDORA, vendor-advisory)
- security@php.net (x_refsource_FEDORA, vendor-advisory)
- security@php.net (mailing-list, x_refsource_BUGTRAQ, Mailing List, Third Party Advisory)
- security@php.net (vendor-advisory, Third Party Advisory, x_refsource_DEBIAN)
- security@php.net (x_refsource_CONFIRM, Third Party Advisory)
Frequently asked questions
- What is CVE-2019-11049?
- CVE-2019-11049 is a medium-severity vulnerability in Microsoft Windows, classified under Double Free. CVSS score: 6.5/10. Published 2019-12-23.
- How severe is CVE-2019-11049?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2019-11049 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.