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Ubuntu: USN-4160-1 (CVE-2018-19518): UW IMAP vulnerability

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Ubuntu: USN-4160-1 (CVE-2018-19518): UW IMAP vulnerability

Severity
9
CVSS
(AV:N/AC:M/Au:S/C:C/I:C/A:C)
Published
11/25/2018
Created
10/23/2019
Added
10/22/2019
Modified
03/02/2020

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OS commands if the IMAP server name is untrusted input (e.g., entered by a user of a web application) and if rsh has been replaced by a program with different argument semantics.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

Solution(s)

  • ubuntu-upgrade-libc-client2007e
  • ubuntu-upgrade-mlock
  • ubuntu-upgrade-uw-mailutils

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