CVE-2018-19518
CVSS v3
7.5
HIGH
EPSS Score
94.0 %
exploit probability
CISA KEV
No
known exploited
Exploitation
—
SSVC status
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OS commands if the IMAP server name is untrusted input (e.g., entered by a user of a web application) and if rsh has been replaced by a program with different argument semantics.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.
Technical details
- Published
- 2018-11-25
- Exploit-DB
- EDB-45914
Frequently asked questions
What is 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OS commands if the IMAP server name is untrusted input (e.g., entered by a user of a web application) and if rsh has been replaced by a program with different argument semantics.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.
Is CVE-2018-19518 actively exploited?
Active exploitation of CVE-2018-19518 has not been confirmed. The EPSS score is 94.0%, indicating the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2018-19518?
CVE-2018-19518 has a CVSS v3 base score of 7.5 (HIGH severity).
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