Permissions, Privileges, and Access Controls in INN - CVE-2012-3523
Published: November 11, 2012 / Updated: August 11, 2020
Vulnerability identifier: #VU43349
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2012-3523
CWE-ID: CWE-264
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: ISC
Affected software:
INN
INN
Detailed vulnerability description
The vulnerability allows a remote non-authenticated attacker to read and manipulate data.
The STARTTLS implementation in nnrpd in INN before 2.5.3 does not properly restrict I/O buffering, which allows man-in-the-middle attackers to insert commands into encrypted sessions by sending a cleartext command that is processed after TLS is in place, related to a "plaintext command injection" attack, a similar issue to CVE-2011-0411.
How to mitigate CVE-2012-3523
Install update from vendor's website.