Credential cracking via fixed password-hashing salt
Published Aug 4, 2021 · Updated Aug 3, 2024
Weak password hashing in ShowDoc 2.9.7 and earlier allows attackers with database access to crack user passwords offline. The UserModel register, updatePwd, and checkLogin methods hash every password with nested MD5 operations and the same hardcoded salt. Exploitation requires access to stored password hashes, and successful cracking exposes reusable account credentials without directly changing data.
Summary
What happened
Weak password hashing in ShowDoc 2.9.7 and earlier allows attackers with database access to crack user passwords offline. The UserModel register, updatePwd, and checkLogin methods hash every password with nested MD5 operations and the same hardcoded salt. Exploitation requires access to stored password hashes, and successful cracking exposes reusable account credentials without directly changing data.
The record
- CVE
- CVE-2021-3680
- Published
- Aug 4, 2021
- Updated
- Aug 3, 2024
- Vendor
- ShowDoc
- Product
- ShowDoc
- Classifications
- CWE-347, CWE-325, T1110.002
- Attack vector
- network
- Privileges
- admin
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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