# CVE-2018-19518: libapache2-mod-php7.2: University of Washington IMAP Toolkit 2007f on UNIX, as used in imap_open() in PHP and other products, launches an rs... CVE-2018-19518 is fixed in 40 products on 1 platform, first by libc-client2007e 8:2007f~dfsg-5ubuntu0.18.04.2, released November 25, 2018. It is not reported as exploited. Patch Radar priority: Routine. - Web page: https://patchblox.com/security/cve/CVE-2018-19518 - Priority: Routine - CVSS: n/a (Medium) - EPSS: 0.9611 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Nov 25, 2018 ## Description University of Washington IMAP Toolkit 2007f on UNIX, as used in imap_open() in PHP and other products, launches an rsh command (by means of the imap_rimap function in c-client/imap4r1.c and the tcp_aopen function in osdep/unix/tcp_unix.c) without preventing argument injection, which might allow remote attackers to execute arbitrary OS commands if the IMAP server name is untrusted input (e.g., entered by a user of a web application) and if rsh has been replaced by a program with different argument semantics. For example, if rsh is a link to ssh (as seen on Debian and Ubuntu systems), then the attack can use an IMAP server name containing a "-oProxyCommand" argument. ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | libapache2-mod-php7.2 Ubuntu 18.04.6 LTS (bionic) | 7.2.15-0ubuntu0.18.04.1 | [libapache2-mod-php7.2 7.2.15-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libapache2-mod-php7.2-7.2.15-0ubuntu0.18.04.1.md) | Feb 21, 2019 | | Linux | libc-client2007e Ubuntu 18.04.6 LTS (bionic) | 8:2007f~dfsg-5ubuntu0.18.04.2 | [libc-client2007e 8:2007f~dfsg-5ubuntu0.18.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libc-client2007e-8-2007f-dfsg-5ubuntu0.18.04.2.md) | Nov 25, 2018 | | Linux | libphp7.2-embed Ubuntu 18.04.6 LTS (bionic) | 7.2.15-0ubuntu0.18.04.1 | [libphp7.2-embed 7.2.15-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libphp7.2-embed-7.2.15-0ubuntu0.18.04.1.md) | Feb 21, 2019 | | Linux | mlock Ubuntu 18.04.6 LTS (bionic) | 8:2007f~dfsg-5ubuntu0.18.04.2 | [mlock 8:2007f~dfsg-5ubuntu0.18.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-mlock-8-2007f-dfsg-5ubuntu0.18.04.2.md) | Nov 25, 2018 | | Linux | php7.2 Ubuntu 18.04.6 LTS (bionic) | 7.2.15-0ubuntu0.18.04.1 | [php7.2 7.2.15-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-php7.2-7.2.15-0ubuntu0.18.04.1.md) | Feb 21, 2019 | | Linux | php7.2-bcmath Ubuntu 18.04.6 LTS (bionic) | 7.2.15-0ubuntu0.18.04.1 | [php7.2-bcmath 7.2.15-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-php7.2-bcmath-7.2.15-0ubuntu0.18.04.1.md) | Feb 21, 2019 | | Linux | php7.2-bz2 Ubuntu 18.04.6 LTS (bionic) | 7.2.15-0ubuntu0.18.04.1 | [php7.2-bz2 7.2.15-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-php7.2-bz2-7.2.15-0ubuntu0.18.04.1.md) | Feb 21, 2019 | | Linux | php7.2-cgi Ubuntu 18.04.6 LTS (bionic) | 7.2.15-0ubuntu0.18.04.1 | [php7.2-cgi 7.2.15-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-php7.2-cgi-7.2.15-0ubuntu0.18.04.1.md) | Feb 21, 2019 | | Linux | php7.2-cli Ubuntu 18.04.6 LTS (bionic) | 7.2.15-0ubuntu0.18.04.1 | [php7.2-cli 7.2.15-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-php7.2-cli-7.2.15-0ubuntu0.18.04.1.md) | Feb 21, 2019 | | Linux | php7.2-common Ubuntu 18.04.6 LTS (bionic) | 7.2.15-0ubuntu0.18.04.1 | [php7.2-common 7.2.15-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-php7.2-common-7.2.15-0ubuntu0.18.04.1.md) | Feb 21, 2019 | | Linux | php7.2-curl Ubuntu 18.04.6 LTS (bionic) | 7.2.15-0ubuntu0.18.04.1 | [php7.2-curl 7.2.15-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-php7.2-curl-7.2.15-0ubuntu0.18.04.1.md) | Feb 21, 2019 | | Linux | php7.2-dba Ubuntu 18.04.6 LTS (bionic) | 7.2.15-0ubuntu0.18.04.1 | [php7.2-dba 7.2.15-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-php7.2-dba-7.2.15-0ubuntu0.18.04.1.md) | Feb 21, 2019 | | Linux | php7.2-enchant Ubuntu 18.04.6 LTS (bionic) | 7.2.15-0ubuntu0.18.04.1 | [php7.2-enchant 7.2.15-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-php7.2-enchant-7.2.15-0ubuntu0.18.04.1.md) | Feb 21, 2019 | | Linux | php7.2-fpm Ubuntu 18.04.6 LTS (bionic) | 7.2.15-0ubuntu0.18.04.1 | [php7.2-fpm 7.2.15-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-php7.2-fpm-7.2.15-0ubuntu0.18.04.1.md) | Feb 21, 2019 | | Linux | php7.2-gd Ubuntu 18.04.6 LTS (bionic) | 7.2.15-0ubuntu0.18.04.1 | [php7.2-gd 7.2.15-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-php7.2-gd-7.2.15-0ubuntu0.18.04.1.md) | Feb 21, 2019 | | Linux | php7.2-gmp Ubuntu 18.04.6 LTS (bionic) | 7.2.15-0ubuntu0.18.04.1 | [php7.2-gmp 7.2.15-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-php7.2-gmp-7.2.15-0ubuntu0.18.04.1.md) | Feb 21, 2019 | | Linux | php7.2-imap Ubuntu 18.04.6 LTS (bionic) | 7.2.15-0ubuntu0.18.04.1 | [php7.2-imap 7.2.15-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-php7.2-imap-7.2.15-0ubuntu0.18.04.1.md) | Feb 21, 2019 | | Linux | php7.2-interbase Ubuntu 18.04.6 LTS (bionic) | 7.2.15-0ubuntu0.18.04.1 | [php7.2-interbase 7.2.15-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-php7.2-interbase-7.2.15-0ubuntu0.18.04.1.md) | Feb 21, 2019 | | Linux | php7.2-intl Ubuntu 18.04.6 LTS (bionic) | 7.2.15-0ubuntu0.18.04.1 | [php7.2-intl 7.2.15-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-php7.2-intl-7.2.15-0ubuntu0.18.04.1.md) | Feb 21, 2019 | | Linux | php7.2-json Ubuntu 18.04.6 LTS (bionic) | 7.2.15-0ubuntu0.18.04.1 | [php7.2-json 7.2.15-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-php7.2-json-7.2.15-0ubuntu0.18.04.1.md) | Feb 21, 2019 | | Linux | php7.2-ldap Ubuntu 18.04.6 LTS (bionic) | 7.2.15-0ubuntu0.18.04.1 | [php7.2-ldap 7.2.15-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-php7.2-ldap-7.2.15-0ubuntu0.18.04.1.md) | Feb 21, 2019 | | Linux | php7.2-mbstring Ubuntu 18.04.6 LTS (bionic) | 7.2.15-0ubuntu0.18.04.1 | [php7.2-mbstring 7.2.15-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-php7.2-mbstring-7.2.15-0ubuntu0.18.04.1.md) | Feb 21, 2019 | | Linux | php7.2-mysql Ubuntu 18.04.6 LTS (bionic) | 7.2.15-0ubuntu0.18.04.1 | [php7.2-mysql 7.2.15-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-php7.2-mysql-7.2.15-0ubuntu0.18.04.1.md) | Feb 21, 2019 | | Linux | php7.2-odbc Ubuntu 18.04.6 LTS (bionic) | 7.2.15-0ubuntu0.18.04.1 | [php7.2-odbc 7.2.15-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-php7.2-odbc-7.2.15-0ubuntu0.18.04.1.md) | Feb 21, 2019 | | Linux | php7.2-opcache Ubuntu 18.04.6 LTS (bionic) | 7.2.15-0ubuntu0.18.04.1 | [php7.2-opcache 7.2.15-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-php7.2-opcache-7.2.15-0ubuntu0.18.04.1.md) | Feb 21, 2019 | | Linux | php7.2-pgsql Ubuntu 18.04.6 LTS (bionic) | 7.2.15-0ubuntu0.18.04.1 | [php7.2-pgsql 7.2.15-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-php7.2-pgsql-7.2.15-0ubuntu0.18.04.1.md) | Feb 21, 2019 | | Linux | php7.2-phpdbg Ubuntu 18.04.6 LTS (bionic) | 7.2.15-0ubuntu0.18.04.1 | [php7.2-phpdbg 7.2.15-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-php7.2-phpdbg-7.2.15-0ubuntu0.18.04.1.md) | Feb 21, 2019 | | Linux | php7.2-pspell Ubuntu 18.04.6 LTS (bionic) | 7.2.15-0ubuntu0.18.04.1 | [php7.2-pspell 7.2.15-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-php7.2-pspell-7.2.15-0ubuntu0.18.04.1.md) | Feb 21, 2019 | | Linux | php7.2-readline Ubuntu 18.04.6 LTS (bionic) | 7.2.15-0ubuntu0.18.04.1 | [php7.2-readline 7.2.15-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-php7.2-readline-7.2.15-0ubuntu0.18.04.1.md) | Feb 21, 2019 | | Linux | php7.2-recode Ubuntu 18.04.6 LTS (bionic) | 7.2.15-0ubuntu0.18.04.1 | [php7.2-recode 7.2.15-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-php7.2-recode-7.2.15-0ubuntu0.18.04.1.md) | Feb 21, 2019 | | Linux | php7.2-snmp Ubuntu 18.04.6 LTS (bionic) | 7.2.15-0ubuntu0.18.04.1 | [php7.2-snmp 7.2.15-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-php7.2-snmp-7.2.15-0ubuntu0.18.04.1.md) | Feb 21, 2019 | | Linux | php7.2-soap Ubuntu 18.04.6 LTS (bionic) | 7.2.15-0ubuntu0.18.04.1 | [php7.2-soap 7.2.15-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-php7.2-soap-7.2.15-0ubuntu0.18.04.1.md) | Feb 21, 2019 | | Linux | php7.2-sqlite3 Ubuntu 18.04.6 LTS (bionic) | 7.2.15-0ubuntu0.18.04.1 | [php7.2-sqlite3 7.2.15-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-php7.2-sqlite3-7.2.15-0ubuntu0.18.04.1.md) | Feb 21, 2019 | | Linux | php7.2-sybase Ubuntu 18.04.6 LTS (bionic) | 7.2.15-0ubuntu0.18.04.1 | [php7.2-sybase 7.2.15-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-php7.2-sybase-7.2.15-0ubuntu0.18.04.1.md) | Feb 21, 2019 | | Linux | php7.2-tidy Ubuntu 18.04.6 LTS (bionic) | 7.2.15-0ubuntu0.18.04.1 | [php7.2-tidy 7.2.15-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-php7.2-tidy-7.2.15-0ubuntu0.18.04.1.md) | Feb 21, 2019 | | Linux | php7.2-xml Ubuntu 18.04.6 LTS (bionic) | 7.2.15-0ubuntu0.18.04.1 | [php7.2-xml 7.2.15-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-php7.2-xml-7.2.15-0ubuntu0.18.04.1.md) | Feb 21, 2019 | | Linux | php7.2-xmlrpc Ubuntu 18.04.6 LTS (bionic) | 7.2.15-0ubuntu0.18.04.1 | [php7.2-xmlrpc 7.2.15-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-php7.2-xmlrpc-7.2.15-0ubuntu0.18.04.1.md) | Feb 21, 2019 | | Linux | php7.2-xsl Ubuntu 18.04.6 LTS (bionic) | 7.2.15-0ubuntu0.18.04.1 | [php7.2-xsl 7.2.15-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-php7.2-xsl-7.2.15-0ubuntu0.18.04.1.md) | Feb 21, 2019 | | Linux | php7.2-zip Ubuntu 18.04.6 LTS (bionic) | 7.2.15-0ubuntu0.18.04.1 | [php7.2-zip 7.2.15-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-php7.2-zip-7.2.15-0ubuntu0.18.04.1.md) | Feb 21, 2019 | | Linux | uw-mailutils Ubuntu 18.04.6 LTS (bionic) | 8:2007f~dfsg-5ubuntu0.18.04.2 | [uw-mailutils 8:2007f~dfsg-5ubuntu0.18.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-uw-mailutils-8-2007f-dfsg-5ubuntu0.18.04.2.md) | Nov 25, 2018 | --- Data as of 2026-11-07T18:46:35Z UTC. 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