Hatchet through 0.110.5 contains an allocation of resources without limits vulnerability that allows unauthenticated attackers to exhaust memory via the SNS ingestion endpoint. Attackers can send arbitrarily large or concurrent request bodies to POST /api/v1/sns/{tenant}/{event} with any UUID, which the SnsUpdate handler buffers before signature verification, degrading availability.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
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
Low
Partial disruption
CVSS Vector v4.0
Weakness Type (CWE)
References 5
https://github.com/hatchet-dev/hatchet
disclosure@vulncheck.com
https://github.com/hatchet-dev/hatchet/blob/56c617e0da399bc9d8a10d2ba74b4950f8a…
disclosure@vulncheck.com
https://github.com/hatchet-dev/hatchet/blob/56c617e0da399bc9d8a10d2ba74b4950f8a…
disclosure@vulncheck.com
https://hackmd.io/@haind03/hatchet-public-sns-unbounded-body-before-signature-d…
disclosure@vulncheck.com
https://www.vulncheck.com/advisories/hatchet-through-0.110.5-unauthenticated-me…
disclosure@vulncheck.com