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CVE-2018-19518

Status Candidate

Overview

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OS commands if the IMAP server name is untrusted input (e.g., entered by a user of a web application) and if rsh has been replaced by a program with different argument semantics.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

Related Files

Gentoo Linux Security Advisory 202003-57
Posted Mar 27, 2020
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 202003-57 - Multiple vulnerabilities have been found in PHP, the worst of which could result in the execution of arbitrary shell commands. Versions less than 7.4.4 are affected.

tags | advisory, arbitrary, shell, php, vulnerability
systems | linux, gentoo
advisories | CVE-2018-19518, CVE-2020-7059, CVE-2020-7060, CVE-2020-7061, CVE-2020-7062, CVE-2020-7063, CVE-2020-7064, CVE-2020-7065, CVE-2020-7066
SHA-256 | a0c79fe9ba0d351c734220b280bb4f2ef495f58b8f6283805ea9e702e093c985
Ubuntu Security Notice USN-4160-1
Posted Oct 21, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4160-1 - It was discovered that UW IMAP incorrectly handled inputs. A remote attacker could possibly use this issue to execute arbitrary OS commands.

tags | advisory, remote, arbitrary, imap
systems | linux, ubuntu
advisories | CVE-2018-19518
SHA-256 | f9b592cd57c66a41cc2572df5f2ffeecfd664269e7de497697149a9115f866a9
Debian Security Advisory 4353-1
Posted Dec 11, 2018
Authored by Debian | Site debian.org

Debian Linux Security Advisory 4353-1 - Multiple security issues were found in PHP, a widely-used open source denial of service/information disclosure when parsing malformed images, the Apache module allowed cross-site-scripting via the body of a insufficient input validation which can result in the execution of arbitrary shell commands in the imap_open() function and denial of service in the imap_mail() function.

tags | advisory, denial of service, arbitrary, shell, php, info disclosure
systems | linux, debian
advisories | CVE-2018-14851, CVE-2018-14883, CVE-2018-17082, CVE-2018-19518, CVE-2018-19935
SHA-256 | 98d965a957a19f94b8ce6435161a43984df2051692685d685860e9e645957bff
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