Description
Firebird is an open-source relational database management system. In versions prior to 5.0.4, 4.0.7 and 3.0.14, the sdl_desc() function does not validate the length of a decoded SDL descriptor from a slice packet. A zero-length descriptor is later used to calculate the number of slice items, causing a division by zero. An unauthenticated attacker can exploit this by sending a crafted slice packet to crash the server. This issue has been fixed in versions 5.0.4, 4.0.7 and 3.0.14.
CVSS breakdown
CVSS 3.1
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected products
- FirebirdSQL / firebird>= 3.0.0, < 3.0.14 – >= 3.0.0, < 3.0.14
- FirebirdSQL / firebird>= 4.0.0, < 4.0.7 – >= 4.0.0, < 4.0.7
- FirebirdSQL / firebird>= 5.0.0, < 5.0.4 – >= 5.0.0, < 5.0.4