Authentication-token recovery via timing side channel
Published Jan 12, 2022 · Updated Aug 3, 2024
Timing side channel in Jenkins Configuration as Code Plugin 1.55 and earlier allows remote attackers to recover an authentication token. The authentication-token validator applies a non-constant-time equality comparison to attacker-supplied token values, making response timing depend on comparison progress. Exploitation requires repeated remote validation attempts and precise statistical timing; success exposes a valid token, with no direct integrity or availability impact reported.
Summary
What happened
Timing side channel in Jenkins Configuration as Code Plugin 1.55 and earlier allows remote attackers to recover an authentication token. The authentication-token validator applies a non-constant-time equality comparison to attacker-supplied token values, making response timing depend on comparison progress. Exploitation requires repeated remote validation attempts and precise statistical timing; success exposes a valid token, with no direct integrity or availability impact reported.
The record
- CVE
- CVE-2022-23106
- Published
- Jan 12, 2022
- Updated
- Aug 3, 2024
- Vendor
- Jenkins Project
- Product
- Configuration as Code Plugin
- Classifications
- CWE-203, T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jan 12, 2022CVE publishedPublication date reported by the CVE source.
- Aug 3, 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?
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- Affected versionversion=unspecified <=1.55
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
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Public exploit references
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Technologies
Your stack
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Your stack
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