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ubuntucveUbuntu.comUB:CVE-2022-4900
HistoryNov 02, 2023 - 12:00 a.m.

CVE-2022-4900

2023-11-0200:00:00
ubuntu.com
ubuntu.com
76
php
vulnerability
heap buffer overflow
environment variable

5.5 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

6.1 Medium

AI Score

Confidence

High

1.7 Low

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:L/AC:L/Au:S/C:N/I:N/A:P

0.001 Low

EPSS

Percentile

27.9%

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.

Bugs

Notes

Author Note
Priority reason: Crash in command line tool only.
leosilva php7.2 in bionic doesn’t have the affected code.
rodrigo-zaiden affected code seems like was added in commit 82effb3f, that is included with php7.4.
OSVersionArchitecturePackageVersionFilename
ubuntu20.04noarchphp7.4< 7.4.3-4ubuntu2.22UNKNOWN
ubuntu22.04noarchphp8.1< 8.1.2-1ubuntu2.17UNKNOWN

5.5 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

6.1 Medium

AI Score

Confidence

High

1.7 Low

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:L/AC:L/Au:S/C:N/I:N/A:P

0.001 Low

EPSS

Percentile

27.9%