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high7.5Public exploit code

CVE-2018-19518

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 func…

Public exploit code

Working exploit or proof of concept code has been published for this vulnerability. Treat unpatched systems as at risk.

Impact

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OS commands if the IMAP server name is untrusted input (e.g., entered by a user of a web application) and if rsh has been replaced by a program with different argument semantics.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.

Affected products

VendorProductAffected versions
PhpPhp
from 5.6.0 through 5.6.38
from 7.0.0 through 7.0.32
from 7.1.0 through 7.1.24
from 7.2.0 through 7.2.12
DebianDebian Linux
Versions 8.0, 9.0
Uw-Imap ProjectUw-Imap
Version 2007f
CanonicalUbuntu Linux
Versions 16.04, 18.04, 19.04

Weakness classification

CWE-88

References