opentelemetry-java is the Java implementation of the OpenTelemetry API for recording telemetry, and SDK for managing telemetry recorded by the API. Prior to 1.67.0, W3CTraceContextPropagator.extract() uses regex delimiter processing that can exhibit quadratic backtracking while parsing tracestate headers containing long runs of spaces or tabs without a following comma. An unauthenticated attacker whose headers reach extraction can repeatedly block request or event-loop threads and cause excessive CPU consumption, with practical impact bounded by ingress header-size limits, proxy configuration, and threading.
This issue is fixed in version 1.67.0.
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
Low
Partial disruption
CVSS Vector v3.1
Weakness Type (CWE)
Vulnerable Products
open-telemetry:opentelemetry-java
References 5
https://github.com/open-telemetry/opentelemetry-java/security/advisories/GHSA-c…
https://github.com/open-telemetry/opentelemetry-java/security/advisories/GHSA-ccrj-gw8r-854m
https://github.com/open-telemetry/opentelemetry-java/pull/8914
https://github.com/open-telemetry/opentelemetry-java/pull/8914
https://github.com/open-telemetry/opentelemetry-java/commit/ba4dfea91647d1ef596…
https://github.com/open-telemetry/opentelemetry-java/commit/ba4dfea91647d1ef596975db5d7197681df3c0f5
https://github.com/open-telemetry/opentelemetry-java/commit/cc4f5f22aed0d693699…
https://github.com/open-telemetry/opentelemetry-java/commit/cc4f5f22aed0d69369941cde8029e73507cf438f
https://github.com/open-telemetry/opentelemetry-java/releases/tag/v1.67.0
https://github.com/open-telemetry/opentelemetry-java/releases/tag/v1.67.0