Detections
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Alibaba Cloud Linux 3 : 0018: php:7.4 (ALINUX3-SA-2023:0018)
critical Nessus Plugin ID 236672
Synopsis
The remote Alibaba Cloud Linux host is missing one or more security updates.Description
The remote Alibaba Cloud Linux 3 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALINUX3-SA-2023:0018 advisory.Package updates are available for Alibaba Cloud Linux 3 that fix the following vulnerabilities:
CVE-2021-21707:
In PHP versions 7.3.x below 7.3.33, 7.4.x below 7.4.26 and 8.0.x below 8.0.13, certain XML parsing functions, like simplexml_load_file(), URL-decode the filename passed to them. If that filename contains URL-encoded NUL character, this may cause the function to interpret this as the end of the filename, thus interpreting the filename differently from what the user intended, which may lead it to reading a different file than intended.
CVE-2021-21708:
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-2021-32610:
In Archive_Tar before 1.4.14, symlinks can refer to targets outside of the extracted archive, a different vulnerability than CVE-2020-36193.
Tenable has extracted the preceding description block directly from the Alibaba Cloud Linux security advisory.
Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.
Solution
Update the affected packages.See Also
http://mirrors.aliyun.com/alinux/3/cve/alinux3-sa-20230018.xml
Plugin Details
Severity: Critical
ID: 236672
File Name: alinux3_sa_2023-0018.nasl
Version: 1.1
Type: local
Published: 5/14/2025
Updated: 5/14/2025
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 6.7
CVSS v2
Risk Factor: Medium
Base Score: 6.8
Temporal Score: 5.3
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: 8.8
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:P/RL:O/RC:C
Vulnerability Information
CPE: p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:php-snmp, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:php-bcmath-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:php-enchant, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:php-ldap-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:php-pdo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:php-enchant-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:php-opcache, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:php-devel, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:php-pdo-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:php-gmp-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:php-mysqlnd, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:php-dbg, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:php-pgsql-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:php-gd-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:php-cli, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:php-mbstring-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:php-debugsource, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:php-process, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:php-ldap, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:php-odbc-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:php-gmp, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:php-soap-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:php-json, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:php-dba, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:php-odbc, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:php-gd, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:php-intl-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:php-xml-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:php-xmlrpc-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:php-snmp-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:php-cli-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:php-embedded, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:php-embedded-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:php-dbg-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:php-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:php, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:php-pgsql, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:php-xmlrpc, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:php-bcmath, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:php-fpm-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:php-mysqlnd-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:php-mbstring, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:php-json-debuginfo, cpe:/o:alibabacloud:alibaba_cloud_linux_3, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:php-common, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:php-fpm, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:php-opcache-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:php-process-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:php-soap, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:php-common-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:php-intl, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:php-xml, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:php-dba-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:php-ffi, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:php-ffi-debuginfo
Required KB Items: Host/local_checks_enabled, Host/cpu, Host/Alibaba/release, Host/Alibaba/rpm-list
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 2/3/2023
Vulnerability Publication Date: 7/21/2021