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
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.042 (90.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 91st percentile — 90.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.042 · newest: 0.042 · change: 0.000
Affected products
- Microsoft Windows
- PHP — versions 7.4.0
- PHP Group — versions 7.3.x, 7.4.x
- Tenable Security Center
- Tenable Securitycenter
- Debian Linux — versions 10.0
- Fedoraproject Fedora — versions 30, 31
Weakness classification (CWE)
Public proof-of-concept exploits
References
- bugs.php.net/bug.php (Patch, Mailing List, Vendor Advisory)
- security.netapp.com/advisory/ntap-20200103-0002/ (Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- seclists.org/bugtraq/2020/Feb/27 (mailing-list, Mailing List, Third Party Advisory)
- www.debian.org/security/2020/dsa-4626 (vendor-advisory, Third Party Advisory)
- www.tenable.com/security/tns-2021-14 (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.