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 commands into encrypted SMTP sessions by sending a cleartext command that is processed after TLS is in…
Does this matter?
Lower severity and a low EPSS score (5.16%). Track it; it rarely justifies an emergency change on its own.
Description
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.
- CVSS 2.0
- 6.8 MEDIUMAV:N/AC:M/Au:N/C:P/I:P/A:P
- EPSS
- 5.16% probability · 92th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-264
- Affected
- watchguard/xcs
- Source
- cve@mitre.org
References
- http://secunia.com/advisories/44753
- http://www.kb.cert.org/vuls/id/555316US Government Resource
- http://www.kb.cert.org/vuls/id/MAPG-8D9M75US Government Resource
- http://www.watchguard.com/support/release-notes/xcs/9/en-US/EN_ReleaseNotes_XCS_9_1_1/EN_ReleaseNotes_WG_XCS_9_1_TLS_Hotfix.pdf
- https://exchange.xforce.ibmcloud.com/vulnerabilities/67729
- http://secunia.com/advisories/44753
- http://www.kb.cert.org/vuls/id/555316US Government Resource
- http://www.kb.cert.org/vuls/id/MAPG-8D9M75US Government Resource
- http://www.watchguard.com/support/release-notes/xcs/9/en-US/EN_ReleaseNotes_XCS_9_1_1/EN_ReleaseNotes_WG_XCS_9_1_TLS_Hotfix.pdf
- https://exchange.xforce.ibmcloud.com/vulnerabilities/67729
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.