Administrator access via retained pre-login session
Published May 16, 2023 · Updated Jan 23, 2025
Session fixation in Jenkins CAS Plugin 1.6.2 and earlier allows remote attackers to gain administrator access through social engineering. CasAuthenticationFilter lacked a session-authentication strategy, so successful CAS login preserved the pre-login session instead of replacing it. The attacker must establish a session identifier and induce a Jenkins administrator to authenticate with that session, after which the retained identifier yields the administrator's access.
Summary
What happened
Session fixation in Jenkins CAS Plugin 1.6.2 and earlier allows remote attackers to gain administrator access through social engineering. CasAuthenticationFilter lacked a session-authentication strategy, so successful CAS login preserved the pre-login session instead of replacing it. The attacker must establish a session identifier and induce a Jenkins administrator to authenticate with that session, after which the retained identifier yields the administrator's access.
The record
- CVE
- CVE-2023-32997
- Published
- May 16, 2023
- Updated
- Jan 23, 2025
- Vendor
- Jenkins Project
- Product
- CAS Plugin
- Classifications
- CWE-384, T1550.004
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- May 16, 2023CVE publishedPublication date reported by the CVE source.
- Jan 23, 2025Record 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 <=1.6.2
What conditions does exploitation require?
What is affected?
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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