postfix security update
postfix did not clear the receive buffer after the STARTTLS
command. A man-in-the middle could therefore inject
commands in the unencrypted stream that get interpreted in
the encrypted phase after STARTTLS (CVE-2011-0411).
-
Submitted by
Adrian Schröter (adrianSuSE)
- Version 4251
Fixed bugs
bnc#677792
VUL-0: postfix: STARTTLS plaintext injection
CVE#CVE-2011-0411
The STARTTLS implementation in Postfix 2.4.x before 2.4.16, 2.5.x before 2.5.12, 2.6.x before 2.6.9, and 2.7.x before 2.7.3 does not properly restrict I/O buffering, which allows man-in-the-middle attackers to insert commands into encrypted SMTP sessions
