Vulnerability Details : CVE-2020-7065
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.
Vulnerability category: Memory Corruption
Exploit prediction scoring system (EPSS) score for CVE-2020-7065
Probability of exploitation activity in the next 30 days: 0.50%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 73 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2020-7065
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|
|
6.8
|
MEDIUM | AV:N/AC:M/Au:N/C:P/I:P/A:P |
8.6
|
6.4
|
[email protected] |
|
8.8
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
2.8
|
5.9
|
[email protected] |
|
7.4
|
HIGH | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H |
2.2
|
5.2
|
[email protected] |
CWE ids for CVE-2020-7065
-
A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).Assigned by: [email protected] (Secondary)
-
The product writes data past the end, or before the beginning, of the intended buffer.Assigned by: [email protected] (Primary)
References for CVE-2020-7065
-
https://www.tenable.com/security/tns-2021-14
Third Party Advisory
-
https://www.debian.org/security/2020/dsa-4719
Third Party Advisory
-
https://usn.ubuntu.com/4330-2/
Third Party Advisory
-
https://usn.ubuntu.com/4330-1/
Third Party Advisory
-
https://bugs.php.net/bug.php?id=79371
Exploit;Issue Tracking;Patch;Vendor Advisory
-
https://www.php.net/ChangeLog-7.php#7.4.4
Release Notes;Vendor Advisory
-
https://security.netapp.com/advisory/ntap-20200403-0001/
Third Party Advisory
-
https://www.oracle.com/security-alerts/cpuoct2021.html
Patch;Third Party Advisory
Products affected by CVE-2020-7065
- cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
- cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
- cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*
- cpe:2.3:a:tenable:tenable.sc:*:*:*:*:*:*:*:*