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 by sending a cleartext command that is processed after TLS is in place, related to a "plaintext command injection" attack.
Open Enterprise Server openSUSE 11.2 openSUSE 11.3 openSUSE 11.4 openSUSE Tumbleweed SUSE CORE 9 for AMD64 and Intel EM64T SUSE Linux Enterprise Desktop 10 SP3 for AMD64 and Intel EM64T SUSE Linux Enterprise Desktop 10 SP3 for x86 SUSE Linux Enterprise Desktop 10 SP4 for AMD64 and Intel EM64T SUSE Linux Enterprise Desktop 10 SP4 for x86 SUSE Linux Enterprise Desktop 11 SP1 SUSE Linux Enterprise SDK 10 SP3 SUSE Linux Enterprise Server 10 SP2 for AMD64 and Intel EM64T SUSE Linux Enterprise Server 10 SP2 for IBM zSeries 64bit SUSE Linux Enterprise Server 10 SP2 for x86 SUSE Linux Enterprise Server 10 SP3 SUSE Linux Enterprise Server 10 SP4 for AMD64 and Intel EM64T SUSE Linux Enterprise Server 10 SP4 for IBM POWER SUSE Linux Enterprise Server 10 SP4 for IBM zSeries 64bit SUSE Linux Enterprise Server 10 SP4 for IPF SUSE Linux Enterprise Server 10 SP4 for x86 SUSE Linux Enterprise Server 11 SP1 SUSE Linux Enterprise Server 11 SP1 for VMware SUSE Linux Enterprise Server 11 SP1-TERADATA SUSE Linux Enterprise Server 11 SP2 SUSE Linux Enterprise Server 11 SP3 SUSE Linux Enterprise Server 11 SP4 SUSE Linux Enterprise Server for SAP 10 SP3 SUSE Linux Enterprise Server for SAP Applications 11 SP1-TERADATA SUSE Linux Enterprise Software Development Kit 11 SP1 SUSE Linux Enterprise Teradata 10 SP3 for AMD64 and Intel EM64T