CVE-2020-7065 — Stack-based Buffer Overflow in Group PHP

CWE-121 — Stack-based Buffer OverflowCWE-787 — Out-of-bounds WriteCWE-805 — Buffer Access with Incorrect Length Value13 documents9 sources
Severity
8.8HIGHNVD
CNA7.4
EPSS
5.0%
top 10.25%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
5
PHP Group PHPPHPTenable Tenable.sc+2 more
Timeline
PublishedApr 1
Latest updateMay 24

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 vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HExploitability: 2.8 | Impact: 5.9

Affected Packages3 packages

▶NVDphp/php7.3.0 — 7.3.16+1
▶CVEListV5php_group/php7.3.x — 7.3.16+1
▶NVDtenable/tenable.sc< 5.19.0

Also affects: Debian Linux 10.0, Ubuntu Linux 12.04, 14.04, 16.04, 18.04, 19.10, 20.04

Patches

Patch: bugs.php.net ↗Patch: www.oracle.com ↗Patch: bugs.php.net ↗

🔴Vulnerability Details

5
GHSA
GHSA-hpqg-gp78-43q4: In PHP versions 7↗2022-05-24
▶
OSV
php7.4 vulnerabilities↗2020-05-06
▶
OSV
php5, php7.0, php7.2, php7.3 vulnerabilities↗2020-04-15
▶
CVEList
mb_strtolower (UTF-32LE): stack-buffer-overflow at php_unicode_tolower_full↗2020-04-01
▶
OSV
CVE-2020-7065: In PHP versions 7↗2020-04-01
▶

📋Vendor Advisories

4
Ubuntu
PHP vulnerabilities↗2020-05-06
▶
Ubuntu
PHP vulnerabilities↗2020-04-15
▶
Red Hat
php: Using mb_strtolower() function with UTF-32LE encoding leads to potential code execution↗2020-04-01
▶
Debian
CVE-2020-7065: php7.4 - In PHP versions 7.3.x below 7.3.16 and 7.4.x below 7.4.4, while using mb_strtolo...↗2020
▶

💬Community

3
HackerOne
mb_strtolower (UTF-32LE): stack-buffer-overflow at php_unicode_tolower_full (CVE-2020-7065)↗2020-10-21
▶
Bugzilla
CVE-2020-7065 php: Using mb_strtolower() function with UTF-32LE encoding leads to potential code execution↗2020-04-03
▶
Bugzilla
CVE-2020-7065 php: by using mb_strtolower() function with UTF-32LE encoding leads to potential code execution [fedora-all]↗2020-04-03
▶
CVE-2020-7065 — Stack-based Buffer Overflow | cvebase