Vector is a high-performance observability data pipeline. From 0.15.0 until 0.57.0, the logstash source feeds each decompressed frame back into its decoder without limiting nested compression depth. An unauthenticated remote peer that can reach the default 0.0.0.0:5044 listener can send many nested compressed frames, causing recursive decoding that exhausts the worker thread stack and aborts the process.
The same nested construction amplifies decompressed input, and process termination can halt log ingestion for every tenant on a shared pipeline. This issue is fixed in version 0.57.0.
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
High
Complete denial of service
CVSS Vector v4.0
Weakness Type (CWE)
References 4
https://github.com/vectordotdev/vector/commit/57fed991083c9a43d5fda2d5b3bf4718a…
security-advisories@github.com
https://github.com/vectordotdev/vector/pull/25825
security-advisories@github.com
https://github.com/vectordotdev/vector/releases/tag/v0.57.0
security-advisories@github.com
https://github.com/vectordotdev/vector/security/advisories/GHSA-qp6f-fpfx-4gg6
security-advisories@github.com