Check: GEN000800
AIX 6.1 SECURITY TECHNICAL IMPLEMENTATION GUIDE:
GEN000800
(in versions v1 r14 through v1 r10)
Title
The system must prohibit the reuse of passwords within five iterations. (Cat II impact)
Discussion
If a user, or root, used the same password continuously or was allowed to change it back shortly after being forced to change it to something else, it would provide a potential intruder with the opportunity to keep guessing at one user's password until it was guessed correctly.
Check Content
Procedure: #lsuser -a histsize ALL If the returned histsize for any user is less than 5, this is a finding.
Fix Text
Use the chsec command to configure the system to prohibit the reuse of passwords within five iterations. # chsec -f /etc/security/user -s default -a histsize=5 # chuser histsize=5 < user id >
Additional Identifiers
Rule ID: SV-38679r1_rule
Vulnerability ID: V-4084
Group Title: GEN000800
Expert Comments
CCIs
Number | Definition |
---|---|
CCI-000200 |
The information system prohibits password reuse for the organization-defined number of generations. |
Controls
Number | Title |
---|---|
IA-5 (1) |
Password-Based Authentication |