Vector is a high-performance observability data pipeline. From 0.15.0 until 0.57.0, the logstash source reads a 32-bit compressed-frame length from the network and uses it to size an in-memory buffer without an upper bound. An unauthenticated remote peer that can reach the default 0.0.0.0:5044 listener can send a minimal frame declaring a multi-gigabyte payload, causing an excessive allocation that can abort Vector or invoke the host OOM killer.
Because the allocation follows the declared length rather than bytes transmitted, the attacker has low resource cost, 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
References 4
https://github.com/vectordotdev/vector/commit/3162ed1a2e5e8d3f210134607518a26aa…
security-advisories@github.com
https://github.com/vectordotdev/vector/pull/25819
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-rrfg-9487-mhp6
security-advisories@github.com