Vulnerability Description
In PHP versions 7.3.x below 7.3.16 and 7.4.x below 7.4.4, while using mb_strtolower() function with UTF-32LE encoding, certain invalid strings could cause PHP to overwrite stack-allocated buffer. This could lead to memory corruption, crashes and potentially code execution.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Php | Php | >= 7.3.0, < 7.3.16 |
| Debian | Debian Linux | 10.0 |
| Canonical | Ubuntu Linux | 12.04 |
| Tenable | Tenable.Sc | < 5.19.0 |
Related Weaknesses (CWE)
References
- https://bugs.php.net/bug.php?id=79371ExploitIssue TrackingPatch
- https://security.netapp.com/advisory/ntap-20200403-0001/Third Party Advisory
- https://usn.ubuntu.com/4330-1/Third Party Advisory
- https://usn.ubuntu.com/4330-2/Third Party Advisory
- https://www.debian.org/security/2020/dsa-4719Third Party Advisory
- https://www.oracle.com/security-alerts/cpuoct2021.htmlPatchThird Party Advisory
- https://www.php.net/ChangeLog-7.php#7.4.4Release NotesVendor Advisory
- https://www.tenable.com/security/tns-2021-14Third Party Advisory
- https://bugs.php.net/bug.php?id=79371ExploitIssue TrackingPatch
- https://security.netapp.com/advisory/ntap-20200403-0001/Third Party Advisory
- https://usn.ubuntu.com/4330-1/Third Party Advisory
- https://usn.ubuntu.com/4330-2/Third Party Advisory
- https://www.debian.org/security/2020/dsa-4719Third Party Advisory
- https://www.oracle.com/security-alerts/cpuoct2021.htmlPatchThird Party Advisory
- https://www.php.net/ChangeLog-7.php#7.4.4Release NotesVendor Advisory
FAQ
What is CVE-2020-7065?
CVE-2020-7065 is a vulnerability with a CVSS score of 7.4 (HIGH). In PHP versions 7.3.x below 7.3.16 and 7.4.x below 7.4.4, while using mb_strtolower() function with UTF-32LE encoding, certain invalid strings could cause PHP to overwrite stack-allocated buffer. This...
How severe is CVE-2020-7065?
CVE-2020-7065 has been rated HIGH with a CVSS base score of 7.4/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2020-7065?
Check the references section above for vendor advisories and patch information. Affected products include: Php Php, Debian Debian Linux, Canonical Ubuntu Linux, Tenable Tenable.Sc.