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CVE-2020-7065

Good to know:

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Date: March 31, 2020

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.

Language: PHP

Severity Score

Related Resources (12)

https://access.redhat.com/security/cve/CVE-2020-7065
https://nvd.nist.gov/vuln/detail/CVE-2020-7065
https://usn.ubuntu.com/4330-2/
https://usn.ubuntu.com/4330-1/
https://bugs.php.net/bug.php?id=79371
https://www.php.net/ChangeLog-7.php#7.4.4
https://www.tenable.com/security/tns-2021-14
https://security.netapp.com/advisory/ntap-20200403-0001/
https://security-tracker.debian.org/tracker/CVE-2020-7065
https://www.debian.org/security/2020/dsa-4719
https://www.oracle.com/security-alerts/cpuoct2021.html
https://www.mend.io/vulnerability-database/CVE-2020-7065

Severity Score

Weakness Type (CWE)

Out-of-bounds Write

CWE-787

Stack-based Buffer Overflow

CWE-121

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): HIGH
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): HIGH
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): MEDIUM
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): PARTIAL
Availability (A): PARTIAL
Additional information:

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