CVE-2011-2165
The STARTTLS implementation in WatchGuard XCS 9.0 and 9.1 does not properly restrict I/O buffering, which allows man-in-the-middle attackers to insert...
- Published
- May 23, 2011
- Updated
- Aug 6, 2024
- Assigning CNA
- mitre
- Evidence observed
- Jun 30, 2015
Primary CVSS
nvd · CVSS 2.0
AV:N/AC:M/Au:N/C:P/I:P/A:PLow · next 30 days
- Percentile
- 92.1%
- Model date
- Sep 21, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
Summary
The STARTTLS implementation in WatchGuard XCS 9.0 and 9.1 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, a similar issue to CVE-2011-0411.
Sources
1Security-Assessment.com · php · Jun 30, 2015
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