CVE-2022-4900: A vulnerability was found in PHP where setting the environment variable PHP_CLI_SERVER_WORKERS to a large value leads to a heap buffer overflow

Medium severity · published Nov 2, 2023

CVE-2022-4900

A vulnerability was found in PHP where setting the environment variable PHP_CLI_SERVER_WORKERS to a large value leads to a heap buffer overflow

5.5

CVSS

0.4%

EPSS

On KEV

Description

A vulnerability was found in PHP where setting the environment variable PHP_CLI_SERVER_WORKERS to a large value leads to a heap buffer overflow.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack vector

Local

Complexity

Low

Privileges

Low

User interaction

None

Confidentiality

None

Integrity

None

Availability

High

Scope

Unchanged

Exploitation

Is it being used?

Exploit prediction (EPSS)0.4% · higher than 30% of CVEs

Exploited in the wildNo evidence yet

CISA KEVNot listed

Ransomware campaign useNot known

Affected products

Which versions

PHP · PHP

before 8.0.22 · source: NVD

Enterprise Linux · Redhat

6.0; 7.0; 8.0; 9.0 · source: NVD

Software Collections · Redhat

All versions, or not specified · source: NVD

Affected product

PHP

All PHP CVEs

References

NVD

https://nvd.nist.gov/vuln/detail/CVE-2022-4900

CVE.org

https://www.cve.org/CVERecord?id=CVE-2022-4900

Vendor Advisory

https://access.redhat.com/security/cve/CVE-2022-4900

Issue Tracking

https://bugzilla.redhat.com/show_bug.cgi?id=2179880

Third Party Advisory

https://security.netapp.com/advisory/ntap-20231130-0008/

lists.debian.org

https://lists.debian.org/debian-lts-announce/2024/10/msg00011.html