Input validation error in Cyrus IMAP Server - CVE-2019-19783

CSH
CYBERSECURITY HELP
Sign In REGISTER
 
Main Vulnerability Database Vulnerabilities #VU23774

Input validation error in Cyrus IMAP Server - CVE-2019-19783

Published: December 20, 2019


Vulnerability identifier: #VU23774
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2019-19783
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vendor: Carnegie Mellon University
Affected software:
Cyrus IMAP Server

Detailed vulnerability description

The vulnerability allows a remote user to escalate privileges within the application.

The vulnerability exists due to insufficient validation of user-supplied input in autosieve_createfolder() function in imap/lmtp_sieve.c. A remote email user can create any mailbox with administrative privileges.

Successful exploitation of the vulnerability requires that the sieve script uploading is allowed (3.x) or certain non-default sieve options are enabled (2.x).


How to mitigate CVE-2019-19783

Install updates from vendor's website.

Sources