UBUNTU-CVE-2020-7065

Advisory lineage Upstream: 1 Downstream: 2
Upstream
CVE-2020-7065
Published: 01 Apr 2020, 04:15
Last modified:22 Apr 2026, 12:43

Vulnerability Summary

Overall Risk (default)
medium
30/100
CVSS Score
7.4 HIGH
3.1 (osv_ubuntu)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

01 Apr 2020, 04:15
Published
Vulnerability first disclosed
22 Apr 2026, 12:43
Last Modified
Vulnerability information updated

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 Metrics

  • v3.1•HIGH•Score: 7.4CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H

Affected Systems

  • ubuntu•php7.4

    < 7.4.3-4ubuntu1.1

References (5)