National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2018-19518 Detail

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OS commands if the IMAP server name is untrusted input (e.g., entered by a user of a web application) and if rsh has been replaced by a program with different argument semantics.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

Source:  MITRE
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 7.5 HIGH
Vector: AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H (V3.0 legend)
Impact Score: 5.9
Exploitability Score: 1.6


Attack Vector (AV): Network
Attack Complexity (AC): High
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

CVSS v2.0 Severity and Metrics:

Base Score: 8.5 HIGH
Vector: (AV:N/AC:M/Au:S/C:C/I:C/A:C) (V2 legend)
Impact Subscore: 10.0
Exploitability Subscore: 6.8


Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (AU): Single
Confidentiality (C): Complete
Integrity (I): Complete
Availability (A): Complete
Additional Information:
Allows unauthorized disclosure of information
Allows unauthorized modification
Allows disruption of service

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://www.securityfocus.com/bid/106018 Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1042157 Third Party Advisory VDB Entry
https://antichat.com/threads/463395/#post-4254681 Exploit Third Party Advisory
https://bugs.debian.org/913775 Mailing List Third Party Advisory
https://bugs.debian.org/913835 Mailing List Third Party Advisory
https://bugs.debian.org/913836 Mailing List Third Party Advisory
https://bugs.php.net/bug.php?id=76428 Exploit Mailing List Vendor Advisory
https://bugs.php.net/bug.php?id=77153 Exploit Mailing List Vendor Advisory
https://bugs.php.net/bug.php?id=77160 Permissions Required Vendor Advisory
https://git.php.net/?p=php-src.git;a=commit;h=e5bfea64c81ae34816479bb05d17cdffe45adddb Mailing List Patch Third Party Advisory
https://github.com/Bo0oM/PHP_imap_open_exploit/blob/master/exploit.php Exploit Third Party Advisory
https://lists.debian.org/debian-lts-announce/2018/12/msg00006.html Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/03/msg00001.html Third Party Advisory
https://security.netapp.com/advisory/ntap-20181221-0004/ Third Party Advisory
https://www.debian.org/security/2018/dsa-4353 Third Party Advisory
https://www.exploit-db.com/exploits/45914/ Exploit Third Party Advisory VDB Entry
https://www.openwall.com/lists/oss-security/2018/11/22/3 Exploit Mailing List Third Party Advisory

Technical Details

Vulnerability Type (View All)

  • Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') (CWE-78)

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
From (including)
5.6.0
Up to (including)
5.6.38
 cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
From (including)
7.0.0
Up to (including)
7.0.32
 cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
From (including)
7.1.0
Up to (including)
7.1.24
 cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
From (including)
7.2.0
Up to (including)
7.2.12

Configuration 2 ( hide )
 cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
     Show Matching CPE(s)

Configuration 3 ( hide )
 cpe:2.3:a:uw-imap_project:uw-imap:2007f:*:*:*:*:*:*:*
     Show Matching CPE(s)


Change History

10 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2018-19518
NVD Published Date:
11/25/2018
NVD Last Modified:
03/05/2019