Debian DSA-4993-1 : php7.3 - security update

high Nessus Plugin ID 154428

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Synopsis

The remote Debian host is missing a security-related update.

Description

The remote Debian 10 host has packages installed that are affected by a vulnerability as referenced in the dsa-4993 advisory.

An out-of-bounds read and write flaw was discovered in the PHP-FPM code, which could result in escalation of privileges from local unprivileged user to the root user. For the oldstable distribution (buster), this problem has been fixed in version 7.3.31-1~deb10u1. We recommend that you upgrade your php7.3 packages.
For the detailed security status of php7.3 please refer to its security tracker page at: https://security- tracker.debian.org/tracker/php7.3

Tenable has extracted the preceding description block directly from the Debian security advisory.

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 php7.3 packages.

Plugin Details

Severity: High

ID: 154428

File Name: debian_DSA-4993.nasl

Version: 1.7

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 10/26/2021

Updated: 1/24/2025

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: High

Score: 7.4

CVSS v2

Risk Factor: Medium

Base Score: 6.9

Temporal Score: 5.4

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

CVSS Score Source: CVE-2021-21703

CVSS v3

Risk Factor: High

Base Score: 7

Temporal Score: 6.3

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

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:php7.3-intl, p-cpe:/a:debian:debian_linux:php7.3-fpm, p-cpe:/a:debian:debian_linux:php7.3-odbc, p-cpe:/a:debian:debian_linux:libphp7.3-embed, p-cpe:/a:debian:debian_linux:php7.3-opcache, p-cpe:/a:debian:debian_linux:php7.3-xsl, p-cpe:/a:debian:debian_linux:php7.3-pgsql, p-cpe:/a:debian:debian_linux:php7.3-cli, p-cpe:/a:debian:debian_linux:php7.3-dba, p-cpe:/a:debian:debian_linux:php7.3-interbase, p-cpe:/a:debian:debian_linux:php7.3-gmp, p-cpe:/a:debian:debian_linux:php7.3, p-cpe:/a:debian:debian_linux:php7.3-tidy, p-cpe:/a:debian:debian_linux:php7.3-sybase, p-cpe:/a:debian:debian_linux:php7.3-mysql, p-cpe:/a:debian:debian_linux:php7.3-enchant, cpe:/o:debian:debian_linux:10.0, p-cpe:/a:debian:debian_linux:php7.3-ldap, p-cpe:/a:debian:debian_linux:php7.3-recode, p-cpe:/a:debian:debian_linux:php7.3-pspell, p-cpe:/a:debian:debian_linux:php7.3-snmp, p-cpe:/a:debian:debian_linux:php7.3-curl, p-cpe:/a:debian:debian_linux:php7.3-sqlite3, p-cpe:/a:debian:debian_linux:php7.3-dev, p-cpe:/a:debian:debian_linux:php7.3-zip, p-cpe:/a:debian:debian_linux:php7.3-gd, p-cpe:/a:debian:debian_linux:php7.3-mbstring, p-cpe:/a:debian:debian_linux:php7.3-imap, p-cpe:/a:debian:debian_linux:php7.3-readline, p-cpe:/a:debian:debian_linux:php7.3-cgi, p-cpe:/a:debian:debian_linux:php7.3-json, p-cpe:/a:debian:debian_linux:php7.3-bcmath, p-cpe:/a:debian:debian_linux:php7.3-xml, p-cpe:/a:debian:debian_linux:php7.3-soap, p-cpe:/a:debian:debian_linux:php7.3-bz2, p-cpe:/a:debian:debian_linux:php7.3-common, p-cpe:/a:debian:debian_linux:php7.3-xmlrpc, p-cpe:/a:debian:debian_linux:php7.3-phpdbg, p-cpe:/a:debian:debian_linux:libapache2-mod-php7.3

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 10/25/2021

Vulnerability Publication Date: 10/25/2021

Reference Information

CVE: CVE-2021-21703

IAVA: 2021-A-0503-S

Detections

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