Unauthenticated telemetry injection via bearer-token timing oracle
Published Aug 13, 2024 · Updated Aug 14, 2024
Observable timing discrepancy in OpenTelemetry Collector Contrib 0.80.0 and later before 0.107.0 allows remote attackers to guess bearer tokens. The bearertokenauth server authenticator compares a received authorization value with the configured token using ordinary string inequality, exposing token-match progress through response timing. Network access to a receiver configured with this authenticator is required; a recovered token permits fabricated telemetry to enter the pipeline.
Summary
What happened
Observable timing discrepancy in OpenTelemetry Collector Contrib 0.80.0 and later before 0.107.0 allows remote attackers to guess bearer tokens. The bearertokenauth server authenticator compares a received authorization value with the configured token using ordinary string inequality, exposing token-match progress through response timing. Network access to a receiver configured with this authenticator is required; a recovered token permits fabricated telemetry to enter the pipeline.
The record
- CVE
- CVE-2024-42368
- Published
- Aug 13, 2024
- Updated
- Aug 14, 2024
- Vendor
- OpenTelemetry
- Product
- OpenTelemetry Collector Contrib
- Classifications
- CWE-208, T1110
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Aug 13, 2024CVE publishedPublication date reported by the CVE source.
- Aug 14, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=>= 0.80.0, < 0.107.0
- Affected versionversion=0.80.0 <0.107.0
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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