Information disclosure in Exim - CVE-2016-9963
Published: December 19, 2016 / Updated: January 5, 2017
Vulnerability identifier: #VU1432
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2016-9963
CWE-ID: CWE-200
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Exim
Affected software:
Exim
Exim
Detailed vulnerability description
The vulnerability allows a remote attacker to obtain potentially sensitive information.
The vulnerability exists due to usage of incorrect buffer when displaying error message for DATA command in src/src/transports/smtp.c file. A remote unauthenticated attacker can send a specially crafted SMTP command and obtain potentially sensitive information, such as DKIM key.
How to mitigate CVE-2016-9963
Install the latest version 4.87.1 or 4.88, which fixes this vulnerability.