F´ (F Prime) is a framework that enables development and deployment of spaceflight and other embedded software applications. Prior to 4.2.0, Svc::Ccsds::SpacePacketDeframer dataIn_handler is vulnerable because the handler treats the minimum packet-length condition as FW_ASSERT rather than rejecting and returning the buffer. When a CCSDS telecommand frame leaves a payload of six bytes or fewer after TcDeframer removes its header and trailer, the assertion aborts or resets the flight-software process, causing denial of service.
This issue is fixed in version 4.2.0.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
None
No data leak
Integrity
None
No data modification
Availability
High
Complete denial of service
CVSS Vector v3.1
Weakness Type (CWE)
References 4
https://github.com/nasa/fprime/commit/cacdd555456bd83ab395b521d56c0330470ea798
security-advisories@github.com
https://github.com/nasa/fprime/pull/4919
security-advisories@github.com
https://github.com/nasa/fprime/releases/tag/v4.2.0
security-advisories@github.com
https://github.com/nasa/fprime/security/advisories/GHSA-4rjh-jqvx-r8j5
security-advisories@github.com