CVE-2022-4900 is a heap buffer overflow vulnerability in PHP, affecting various PHP and Red Hat Enterprise Linux distributions. It occurs when the PHP_CLI_SERVER_WORKERS environment variable is set to an excessively large value. With a CVSS score of 5.5 (Medium), this vulnerability has a local attack vector, low attack complexity, and could lead to a denial of service. There is currently no evidence of active exploitation, nor are there public exploits available in Metasploit, Nuclei, or ExploitDB, though it has received some community discussion and media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 8.0.22CPE matchmatch criteria | cpe:2.3:a:php:php:*:*:*:*:*:*:*:* | ||
Range not provided by sourceCPE matchmatch criteria | cpe:2.3:a:redhat:software_collections:-:*:*:*:*:*:*:* | ||
6.0CPE matchmatch criteria | cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:* | ||
7.0CPE matchmatch criteria | cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* | ||
8.0CPE matchmatch criteria | cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.