CVE-2011-1506
The STARTTLS implementation in Kerio Connect 7.1.4 build 2985 and MailServer 6.x 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…
Does this matter?
Lower severity and a low EPSS score (2.47%). Track it; it rarely justifies an emergency change on its own.
Description
The STARTTLS implementation in Kerio Connect 7.1.4 build 2985 and MailServer 6.x 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. NOTE: some of these details are obtained from third party information.
- CVSS 2.0
- 6.8 MEDIUMAV:N/AC:M/Au:N/C:P/I:P/A:P
- EPSS
- 2.47% probability · 84th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-20
- Affected
- kerio/connect · kerio/kerio mailserver
- Source
- cve@mitre.org
References
- http://secunia.com/advisories/43678Vendor Advisory
- http://www.kb.cert.org/vuls/id/555316US Government Resource
- http://www.kb.cert.org/vuls/id/MAPG-8D9M4PUS Government Resource
- http://www.securityfocus.com/bid/46767
- http://www.vupen.com/english/advisories/2011/0610Vendor Advisory
- https://exchange.xforce.ibmcloud.com/vulnerabilities/65932
- http://secunia.com/advisories/43678Vendor Advisory
- http://www.kb.cert.org/vuls/id/555316US Government Resource
- http://www.kb.cert.org/vuls/id/MAPG-8D9M4PUS Government Resource
- http://www.securityfocus.com/bid/46767
- http://www.vupen.com/english/advisories/2011/0610Vendor Advisory
- https://exchange.xforce.ibmcloud.com/vulnerabilities/65932
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.