Account compromise via forged session cookie rotation
Published Oct 22, 2021 · Updated Aug 4, 2024
Authentication throttling bypass in Deltablot eLabFTW before 4.1.0 allows remote attackers to brute-force account passwords. The login form treats each forged PHPSESSID cookie value as a new client context instead of associating failed attempts with the account. No prior authentication or user interaction is required; successful password guessing exposes the compromised account's data and privileges.
Summary
What happened
Authentication throttling bypass in Deltablot eLabFTW before 4.1.0 allows remote attackers to brute-force account passwords. The login form treats each forged PHPSESSID cookie value as a new client context instead of associating failed attempts with the account. No prior authentication or user interaction is required; successful password guessing exposes the compromised account's data and privileges.
The record
- CVE
- CVE-2021-41171
- Published
- Oct 22, 2021
- Updated
- Aug 4, 2024
- Vendor
- Deltablot
- Product
- eLabFTW
- Classifications
- CWE-307, T1110.001
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Oct 22, 2021CVE publishedPublication date reported by the CVE source.
- Aug 4, 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=< 4.1.0
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.
Weakness, pattern, technique
Public exploit references
- Brute-force login and Bypass Account lockout on elabFTW 1.8.5proof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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