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OS commands if the IMAP server name is untrusted input (e.g., entered by a user of a web application) and if rsh has been replaced by a program with different argument semantics.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

CVSS v3.1

7.5 HIGHCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v2.0

8.5 HIGHAV:N/AC:M/Au:S/C:C/I:C/A:C

EPSS

95.23% chance of exploitation in the next 30 days, 100th percentile

Nuclei

high · CWE-88

Published

2018-11-25

Updated

2024-08-05

Proof-of-concept exploits (6)

• https://antichat.com/threads/463395/#post-4254681
• https://www.openwall.com/lists/oss-security/2018/11/22/3
• Bo0oM/PHP_imap_open_exploit/blob/master/exploit.php
• C-starm/PoC-and-Exp-of-Vulnerabilities0★ · 2019-01-06
• ensimag-security/CVE-2018-195180★ · 2019-01-14
• houqe/EXP_CVE-2018-195184★ · 2023-04-15

Nuclei templates (1)

• projectdiscovery/nuclei-templates/blob/main/dast/cves/2018/CVE-2018-19518.yaml

Metasploit modules (1)

• rapid7/metasploit-framework/blob/master/modules/exploits/linux/http/php_imap_open_rce.rb

ExploitDB entries (1)

• https://www.exploit-db.com/exploits/45914

Vulhub environments (1)

• vulhub/vulhub/tree/master/php/CVE-2018-19518

References

• CVE Record
• NVD entry

Related

• CVE-2017-5124
• CVE-2017-7089
• CVE-2017-11882
• CVE-2018-4407
• CVE-2018-10933
• CVE-2023-21839