* CVE-2018-19518 https://www.openwall.com/lists/oss-security/2018/11/22/3 https://bugs.php.net/bug.php?id=76428 https://bugs.php.net/bug.php?id=77153 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OS commands if the IMAP server name is untrusted input (e.g., entered by a user of a web application) and if rsh has been replaced by a program with different argument semantics.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. -- CVE listing -- Gentoo Security Scout Vladimir Krstulja
Severity B2 because this has the potential of RCE in situations where IMAP server connections are user-configurable (eg. in webmails).
Upstream has a patch: * https://github.com/php/php-src/commit/3a144d3f7f6bad308e2bf112ebf16829eb298f20 Also, new releases tagged upstream: * https://github.com/php/php-src/blob/php-7.2.13/NEWS * https://github.com/php/php-src/blob/php-7.1.25/NEWS * https://github.com/php/php-src/blob/php-7.0.33/NEWS * https://github.com/php/php-src/blob/php-5.6.39/NEWS Please note the PHP-7.0 branch is now EOL'd.
Added to an existing GLSA request.
This issue was resolved and addressed in GLSA 202003-57 at https://security.gentoo.org/glsa/202003-57 by GLSA coordinator Thomas Deutschmann (whissi).