An issue was discovered in Cyrus IMAP before 3.12.4. Mailbox/set let a sharee change a special-use role on shared mailboxes. An authenticated user with maySetKeywords on another user's mailbox could change that mailbox's specialuse annotation.
This could allow the sharee to change the shared mailbox to perform the archived, snoozed, or other role, which might cause mail mail to be written to the shared mailbox, sharing more content than intended. (This is likely to be an unusual situation, made more unusual because if the target already has an non-shared mailbox with that role, role duplication suppression will prevent the update.)
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
High
Difficult to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
Low
Partial data leak
Integrity
None
No data modification
Availability
None
No disruption
CVSS Vector v3.1
Weakness Type (CWE)
Vulnerable Products 3
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
Cyrusimap Cyrus_Imap
cpe:2.3:a:cyrusimap:cyrus_imap:*:*:*:*:*:*:*:*
|
— |
3.8.8
|
|
Cyrusimap Cyrus_Imap
cpe:2.3:a:cyrusimap:cyrus_imap:*:*:*:*:*:*:*:*
|
3.9.0
|
3.10.4
|
|
Cyrusimap Cyrus_Imap
cpe:2.3:a:cyrusimap:cyrus_imap:*:*:*:*:*:*:*:*
|
3.11.0
|
3.12.4
|