Login secret prediction via weak random generation
Published Aug 4, 2021 · Updated Aug 3, 2024
Weak random-number generation in ShowDoc 2.9.7 and earlier allows remote attackers to predict the application's login secret key. The getLoginSecretKey and resetLoginSecretKey methods hash a fixed string with time(), rand(), and uniqid() instead of using a cryptographically secure source. The attack is unauthenticated, but practical success depends on predicting those generator inputs; published assessments limit the consequence to confidentiality loss.
Summary
What happened
Weak random-number generation in ShowDoc 2.9.7 and earlier allows remote attackers to predict the application's login secret key. The getLoginSecretKey and resetLoginSecretKey methods hash a fixed string with time(), rand(), and uniqid() instead of using a cryptographically secure source. The attack is unauthenticated, but practical success depends on predicting those generator inputs; published assessments limit the consequence to confidentiality loss.
The record
- CVE
- CVE-2021-3678
- Published
- Aug 4, 2021
- Updated
- Aug 3, 2024
- Vendor
- ShowDoc
- Product
- ShowDoc
- Classifications
- CWE-338
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Aug 4, 2021CVE 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?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=unspecified <=2.9.7
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.
Weakness, pattern, technique
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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