Xxyopen novel through 3.5.0 contains a weak password hashing vulnerability that allows attackers to recover plaintext passwords because UserServiceImpl.register() stores unsalted MD5 digests in user_info.password. Attackers who obtain the password column through a database leak or backup exposure can crack hashes with precomputed tables or GPU brute force and reuse credentials.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
Present
Additional conditions required
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
None
No data modification
Availability
None
No disruption
CVSS Vector v4.0
Weakness Type (CWE)
References 4
https://github.com/201206030/novel/blob/v3.5.0/src/main/java/io/github/xxyopen/…
disclosure@vulncheck.com
https://github.com/201206030/novel/commit/fa82ce7e426a5b29db469b8f13d2e29fc1260…
disclosure@vulncheck.com
https://github.com/201206030/novel/pull/53
disclosure@vulncheck.com
https://www.vulncheck.com/advisories/novel-through-3.5.0-unsalted-md5-password-…
disclosure@vulncheck.com