Vulnerability Monitor

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CVE-2011-1926

The STARTTLS implementation in Cyrus IMAP Server before 2.4.7 does not properly restrict I/O buffering, which allows man-in-the-middle attackers to insert commands into encrypted 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.

Published

2011-05-23T22:55:01.490

Last Modified

2025-04-11T00:51:21.963

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 5.1 (MEDIUM)

CVSSv2 Vector

AV:N/AC:H/Au:N/C:P/I:P/A:P

  • Access Vector: NETWORK
  • Access Complexity: HIGH
  • Authentication: NONE
  • Confidentiality Impact: PARTIAL
  • Integrity Impact: PARTIAL
  • Availability Impact: PARTIAL
Exploitability Score

4.9

Impact Score

6.4

Weaknesses
  • Type: Primary
    CWE-264
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application cmu cyrus_imap_server ≤ 2.4.6 Yes
Application cmu cyrus_imap_server 2.0.17 Yes
Application cmu cyrus_imap_server 2.1.16 Yes
Application cmu cyrus_imap_server 2.1.17 Yes
Application cmu cyrus_imap_server 2.1.18 Yes
Application cmu cyrus_imap_server 2.2.8 Yes
Application cmu cyrus_imap_server 2.2.9 Yes
Application cmu cyrus_imap_server 2.2.10 Yes
Application cmu cyrus_imap_server 2.2.11 Yes
Application cmu cyrus_imap_server 2.2.12 Yes
Application cmu cyrus_imap_server 2.2.13 Yes
Application cmu cyrus_imap_server 2.2.13p1 Yes
Application cmu cyrus_imap_server 2.3.0 Yes
Application cmu cyrus_imap_server 2.3.1 Yes
Application cmu cyrus_imap_server 2.3.2 Yes
Application cmu cyrus_imap_server 2.3.3 Yes
Application cmu cyrus_imap_server 2.3.4 Yes
Application cmu cyrus_imap_server 2.3.5 Yes
Application cmu cyrus_imap_server 2.3.6 Yes
Application cmu cyrus_imap_server 2.3.7 Yes
Application cmu cyrus_imap_server 2.3.8 Yes
Application cmu cyrus_imap_server 2.3.9 Yes
Application cmu cyrus_imap_server 2.3.10 Yes
Application cmu cyrus_imap_server 2.3.11 Yes
Application cmu cyrus_imap_server 2.3.12 Yes
Application cmu cyrus_imap_server 2.3.13 Yes
Application cmu cyrus_imap_server 2.3.14 Yes
Application cmu cyrus_imap_server 2.3.15 Yes
Application cmu cyrus_imap_server 2.3.16 Yes
Application cmu cyrus_imap_server 2.4.0 Yes
Application cmu cyrus_imap_server 2.4.1 Yes
Application cmu cyrus_imap_server 2.4.2 Yes
Application cmu cyrus_imap_server 2.4.3 Yes
Application cmu cyrus_imap_server 2.4.4 Yes
Application cmu cyrus_imap_server 2.4.5 Yes
References