Ubuntu 16.04 ESM / 18.04 LTS / 20.04 LTS:PHP 漏洞 (USN-5125-1)

high Nessus 插件 ID 154569

简介

远程 Ubuntu 主机缺少安全更新。

描述

远程 Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 21.04 / 21.10 主机上安装的程序包受到 USN-5125-1 公告中提及的一个漏洞影响。

- 在 PHP 版本 7.3.x 到 7.3.31 以及版本低于 7.4.25 的 7.4.x 和版本低于 8.0.12 的 8.0.x 中,如果在运行 PHP FPM SAPI 的同时以 root 用户身份运行主 FPM 后台程序进程并以低权限用户身份运行子工作线程,则子进程可以访问与主进程共享的内存并向其写入,同时修改内存,从而导致根进程执行无效的内存读取和写入,攻击者可利用此漏洞将特权从本地非特权用户提升到 root 用户。
(CVE-2021-21703)

请注意,Nessus 尚未测试此问题,而是只依据应用程序自我报告的版本号进行判断。

解决方案

更新受影响的程序包。

另见

https://ubuntu.com/security/notices/USN-5125-1

插件详情

严重性: High

ID: 154569

文件名: ubuntu_USN-5125-1.nasl

版本: 1.8

类型: local

代理: unix

发布时间: 2021/10/27

最近更新时间: 2023/10/16

支持的传感器: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus

风险信息

VPR

风险因素: High

分数: 7.4

CVSS v2

风险因素: Medium

基本分数: 6.9

时间分数: 5.4

矢量: CVSS2#AV:L/AC:M/Au:N/C:C/I:C/A:C

CVSS 分数来源: CVE-2021-21703

CVSS v3

风险因素: High

基本分数: 7

时间分数: 6.3

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

时间矢量: CVSS:3.0/E:P/RL:O/RC:C

漏洞信息

CPE: p-cpe:/a:canonical:ubuntu_linux:php7.2-cgi, cpe:/o:canonical:ubuntu_linux:16.04:-:esm, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, cpe:/o:canonical:ubuntu_linux:20.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:libapache2-mod-php5, p-cpe:/a:canonical:ubuntu_linux:libapache2-mod-php5filter, p-cpe:/a:canonical:ubuntu_linux:libapache2-mod-php7.0, p-cpe:/a:canonical:ubuntu_linux:libapache2-mod-php7.2, p-cpe:/a:canonical:ubuntu_linux:libapache2-mod-php7.4, p-cpe:/a:canonical:ubuntu_linux:libphp5-embed, p-cpe:/a:canonical:ubuntu_linux:libphp7.0-embed, p-cpe:/a:canonical:ubuntu_linux:libphp7.2-embed, p-cpe:/a:canonical:ubuntu_linux:libphp7.4-embed, p-cpe:/a:canonical:ubuntu_linux:php-pear, p-cpe:/a:canonical:ubuntu_linux:php5, p-cpe:/a:canonical:ubuntu_linux:php5-cgi, p-cpe:/a:canonical:ubuntu_linux:php5-cli, p-cpe:/a:canonical:ubuntu_linux:php5-common, p-cpe:/a:canonical:ubuntu_linux:php5-curl, p-cpe:/a:canonical:ubuntu_linux:php5-dev, p-cpe:/a:canonical:ubuntu_linux:php5-enchant, p-cpe:/a:canonical:ubuntu_linux:php5-fpm, p-cpe:/a:canonical:ubuntu_linux:php5-gd, p-cpe:/a:canonical:ubuntu_linux:php5-gmp, p-cpe:/a:canonical:ubuntu_linux:php5-intl, p-cpe:/a:canonical:ubuntu_linux:php5-ldap, p-cpe:/a:canonical:ubuntu_linux:php5-mysql, p-cpe:/a:canonical:ubuntu_linux:php5-mysqlnd, p-cpe:/a:canonical:ubuntu_linux:php5-odbc, p-cpe:/a:canonical:ubuntu_linux:php5-pgsql, p-cpe:/a:canonical:ubuntu_linux:php5-pspell, p-cpe:/a:canonical:ubuntu_linux:php5-readline, p-cpe:/a:canonical:ubuntu_linux:php5-recode, p-cpe:/a:canonical:ubuntu_linux:php5-snmp, p-cpe:/a:canonical:ubuntu_linux:php5-sqlite, p-cpe:/a:canonical:ubuntu_linux:php5-sybase, p-cpe:/a:canonical:ubuntu_linux:php5-tidy, p-cpe:/a:canonical:ubuntu_linux:php5-xmlrpc, p-cpe:/a:canonical:ubuntu_linux:php5-xsl, p-cpe:/a:canonical:ubuntu_linux:php7.0, p-cpe:/a:canonical:ubuntu_linux:php7.0-bcmath, p-cpe:/a:canonical:ubuntu_linux:php7.0-bz2, p-cpe:/a:canonical:ubuntu_linux:php7.0-cgi, p-cpe:/a:canonical:ubuntu_linux:php7.0-cli, p-cpe:/a:canonical:ubuntu_linux:php7.0-common, p-cpe:/a:canonical:ubuntu_linux:php7.0-curl, p-cpe:/a:canonical:ubuntu_linux:php7.2-cli, p-cpe:/a:canonical:ubuntu_linux:php7.2-common, p-cpe:/a:canonical:ubuntu_linux:php7.2-curl, p-cpe:/a:canonical:ubuntu_linux:php7.2-dba, p-cpe:/a:canonical:ubuntu_linux:php7.2-dev, p-cpe:/a:canonical:ubuntu_linux:php7.2-enchant, p-cpe:/a:canonical:ubuntu_linux:php7.2-fpm, p-cpe:/a:canonical:ubuntu_linux:php7.2-gd, p-cpe:/a:canonical:ubuntu_linux:php7.2-gmp, p-cpe:/a:canonical:ubuntu_linux:php7.2-imap, p-cpe:/a:canonical:ubuntu_linux:php7.4-phpdbg, p-cpe:/a:canonical:ubuntu_linux:php7.4-pspell, p-cpe:/a:canonical:ubuntu_linux:php7.4-readline, p-cpe:/a:canonical:ubuntu_linux:php7.4-snmp, p-cpe:/a:canonical:ubuntu_linux:php7.4-soap, p-cpe:/a:canonical:ubuntu_linux:php7.4-sqlite3, p-cpe:/a:canonical:ubuntu_linux:php7.4-sybase, p-cpe:/a:canonical:ubuntu_linux:php7.4-tidy, p-cpe:/a:canonical:ubuntu_linux:php7.0-dba, p-cpe:/a:canonical:ubuntu_linux:php7.0-dev, p-cpe:/a:canonical:ubuntu_linux:php7.0-enchant, p-cpe:/a:canonical:ubuntu_linux:php7.0-fpm, p-cpe:/a:canonical:ubuntu_linux:php7.0-gd, p-cpe:/a:canonical:ubuntu_linux:php7.0-gmp, p-cpe:/a:canonical:ubuntu_linux:php7.0-imap, p-cpe:/a:canonical:ubuntu_linux:php7.0-interbase, p-cpe:/a:canonical:ubuntu_linux:php7.0-intl, p-cpe:/a:canonical:ubuntu_linux:php7.0-json, p-cpe:/a:canonical:ubuntu_linux:php7.0-ldap, p-cpe:/a:canonical:ubuntu_linux:php7.0-mbstring, p-cpe:/a:canonical:ubuntu_linux:php7.0-mcrypt, p-cpe:/a:canonical:ubuntu_linux:php7.0-mysql, p-cpe:/a:canonical:ubuntu_linux:php7.0-odbc, p-cpe:/a:canonical:ubuntu_linux:php7.0-opcache, p-cpe:/a:canonical:ubuntu_linux:php7.0-pgsql, p-cpe:/a:canonical:ubuntu_linux:php7.0-phpdbg, p-cpe:/a:canonical:ubuntu_linux:php7.0-pspell, p-cpe:/a:canonical:ubuntu_linux:php7.0-readline, p-cpe:/a:canonical:ubuntu_linux:php7.0-recode, p-cpe:/a:canonical:ubuntu_linux:php7.0-snmp, p-cpe:/a:canonical:ubuntu_linux:php7.0-soap, p-cpe:/a:canonical:ubuntu_linux:php7.0-sqlite3, p-cpe:/a:canonical:ubuntu_linux:php7.0-sybase, p-cpe:/a:canonical:ubuntu_linux:php7.0-tidy, p-cpe:/a:canonical:ubuntu_linux:php7.0-xml, p-cpe:/a:canonical:ubuntu_linux:php7.0-xmlrpc, p-cpe:/a:canonical:ubuntu_linux:php7.0-xsl, p-cpe:/a:canonical:ubuntu_linux:php7.0-zip, p-cpe:/a:canonical:ubuntu_linux:php7.2, p-cpe:/a:canonical:ubuntu_linux:php7.2-bcmath, p-cpe:/a:canonical:ubuntu_linux:php7.2-bz2, p-cpe:/a:canonical:ubuntu_linux:php7.2-interbase, p-cpe:/a:canonical:ubuntu_linux:php7.2-intl, p-cpe:/a:canonical:ubuntu_linux:php7.2-json, p-cpe:/a:canonical:ubuntu_linux:php7.2-ldap, p-cpe:/a:canonical:ubuntu_linux:php7.2-mbstring, p-cpe:/a:canonical:ubuntu_linux:php7.2-mysql, p-cpe:/a:canonical:ubuntu_linux:php7.2-odbc, p-cpe:/a:canonical:ubuntu_linux:php7.2-opcache, p-cpe:/a:canonical:ubuntu_linux:php7.2-pgsql, p-cpe:/a:canonical:ubuntu_linux:php7.2-phpdbg, p-cpe:/a:canonical:ubuntu_linux:php7.2-pspell, p-cpe:/a:canonical:ubuntu_linux:php7.2-readline, p-cpe:/a:canonical:ubuntu_linux:php7.2-recode, p-cpe:/a:canonical:ubuntu_linux:php7.2-snmp, p-cpe:/a:canonical:ubuntu_linux:php7.2-soap, p-cpe:/a:canonical:ubuntu_linux:php7.2-sqlite3, p-cpe:/a:canonical:ubuntu_linux:php7.2-sybase, p-cpe:/a:canonical:ubuntu_linux:php7.2-tidy, p-cpe:/a:canonical:ubuntu_linux:php7.2-xml, p-cpe:/a:canonical:ubuntu_linux:php7.2-xmlrpc, p-cpe:/a:canonical:ubuntu_linux:php7.2-xsl, p-cpe:/a:canonical:ubuntu_linux:php7.2-zip, p-cpe:/a:canonical:ubuntu_linux:php7.4, p-cpe:/a:canonical:ubuntu_linux:php7.4-bcmath, p-cpe:/a:canonical:ubuntu_linux:php7.4-bz2, p-cpe:/a:canonical:ubuntu_linux:php7.4-cgi, p-cpe:/a:canonical:ubuntu_linux:php7.4-cli, p-cpe:/a:canonical:ubuntu_linux:php7.4-common, p-cpe:/a:canonical:ubuntu_linux:php7.4-curl, p-cpe:/a:canonical:ubuntu_linux:php7.4-dba, p-cpe:/a:canonical:ubuntu_linux:php7.4-dev, p-cpe:/a:canonical:ubuntu_linux:php7.4-enchant, p-cpe:/a:canonical:ubuntu_linux:php7.4-fpm, p-cpe:/a:canonical:ubuntu_linux:php7.4-gd, p-cpe:/a:canonical:ubuntu_linux:php7.4-gmp, p-cpe:/a:canonical:ubuntu_linux:php7.4-imap, p-cpe:/a:canonical:ubuntu_linux:php7.4-interbase, p-cpe:/a:canonical:ubuntu_linux:php7.4-intl, p-cpe:/a:canonical:ubuntu_linux:php7.4-json, p-cpe:/a:canonical:ubuntu_linux:php7.4-ldap, p-cpe:/a:canonical:ubuntu_linux:php7.4-mbstring, p-cpe:/a:canonical:ubuntu_linux:php7.4-mysql, p-cpe:/a:canonical:ubuntu_linux:php7.4-odbc, p-cpe:/a:canonical:ubuntu_linux:php7.4-opcache, p-cpe:/a:canonical:ubuntu_linux:php7.4-pgsql, p-cpe:/a:canonical:ubuntu_linux:php7.4-xml, p-cpe:/a:canonical:ubuntu_linux:php7.4-xmlrpc, p-cpe:/a:canonical:ubuntu_linux:php7.4-xsl, p-cpe:/a:canonical:ubuntu_linux:php7.4-zip

必需的 KB 项: Host/cpu, Host/Debian/dpkg-l, Host/Ubuntu, Host/Ubuntu/release

可利用: true

易利用性: Exploits are available

补丁发布日期: 2021/10/27

漏洞发布日期: 2021/10/25

参考资料信息

CVE: CVE-2021-21703

IAVA: 2021-A-0503-S

USN: 5125-1