admin3 through 3.0.0 stores account passwords using single-round MD5 with only the username as salt and no key derivation function. Attackers with database access can recover plaintext passwords through offline dictionary or brute-force attacks due to negligible computational effort.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
High
Admin 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)
Vulnerable Products
cjbi:admin3
References 5
https://github.com/LinYuanyi1/cve-request-poc/blob/master/admin3/C08_md5_creden…
admin3 - unsalted single-round MD5 credential hashing (PoC)
https://github.com/cjbi/admin3/blob/3.0.0/admin3-server/src/main/java/tech/wete…
SecurityUtil.java at 3.0.0
https://github.com/cjbi/admin3/blob/3.0.0/admin3-server/src/main/java/tech/wete…
UserCredential.java at 3.0.0
https://github.com/cjbi/admin3
Product
https://www.vulncheck.com/advisories/admin3-through-3.0.0-weak-password-hashing…
VulnCheck Advisory: admin3 through 3.0.0 Weak Password Hashing via Single-Round MD5