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Slackware Linux 15.0 / current php Multiple Vulnerabilities (SSA:2022-048-02)

critical Nessus Plugin ID 158157

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Synopsis

The remote Slackware Linux host is missing a security update to php.

Description

The version of php installed on the remote host is prior to 7.4.28 / 8.0.16 / 8.1.3. It is, therefore, affected by multiple vulnerabilities as referenced in the SSA:2022-048-02 advisory.

 - In PHP versions 7.4.x below 7.4.28, 8.0.x below 8.0.16, and 8.1.x below 8.1.3, when using filter functions with FILTER_VALIDATE_FLOAT filter and min/max limits, if the filter fails, there is a possibility to trigger use of allocated memory after free, which can result it crashes, and potentially in overwrite of other memory chunks and RCE. This issue affects: code that uses FILTER_VALIDATE_FLOAT with min/max limits.
 (CVE-2021-21708)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Upgrade the affected php package.

Plugin Details

Severity: Critical

ID: 158157

File Name: Slackware_SSA_2022-048-02.nasl

Version: 1.5

Type: local

Published: 2/18/2022

Updated: 11/8/2023

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.6

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P

CVSS Score Source: CVE-2021-21708

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 9.1

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:F/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:slackware:slackware_linux:php, p-cpe:/a:slackware:slackware_linux:php80, p-cpe:/a:slackware:slackware_linux:php81, cpe:/o:slackware:slackware_linux, cpe:/o:slackware:slackware_linux:15.0

Required KB Items: Host/local_checks_enabled, Host/Slackware/release, Host/Slackware/packages

Exploit Available: true

Exploit Ease: Exploits are available

Reference Information

CVE: CVE-2021-21708