An issue was discovered in Cyrus IMAP before 3.12.4. There is a VPATCH BYPARAM double-free. An authenticated calendar user could crash a Cyrus CalDAV worker with a PATCH containing PATCH-ACTION="BYPARAM@..." against a resource with two or more properties of the matched kind.
The memory holding the selector would be freed once on each iteration over the properties.
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
None
No data leak
Integrity
Low
Partial data modification
Availability
Low
Partial 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
|