Authentication mechanism absence or evasion - BIOS
Description
The system lacks an authentication mechanism or has one that can be bypassed. Therefore, an attacker can access system resources by logging into the BIOS.
Impact
- Access disk information through other systems.
- Modify and disabling machine configurations.
- Delete all machine information by formatting the disk.
Recommendation
Put in place for every resource with business-critical functionality a strong authentication process and ensure that every user attempting to access it is logged in.
Threat
Unauthorized internal attacker.
Expected Remediation Time
⌚ 120 minutes.
Score
Default score using CVSS 3.1. It may change depending on the context of the src.
Base
- Attack vector: P
- Attack complexity: L
- Privileges required: N
- User interaction: N
- Scope: U
- Confidentiality: H
- Integrity: H
- Availability: H
Temporal
- Exploit code maturity: X
- Remediation level: X
- Report confidence: X
Result
- Vector string: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:X/RL:X/RC:X
- Score:
- Base: 6.8
- Temporal: 6.8
- Severity:
- Base: Medium
- Temporal: Medium
Score 4.0
Default score using CVSS 4.0. It may change depending on the context of the src.
Base 4.0
- Attack vector: P
- Attack complexity: L
- Attack Requirements: N
- Privileges required: N
- User interaction: N
- Confidentiality (VC): H
- Integrity (VI): H
- Availability (VA): H
- Confidentiality (SC): N
- Integrity (SI): N
- Availability (SA): N
Threat 4.0
- Exploit maturity: X
Result 4.0
- Vector string: CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X
- Score:
- CVSS-BT: 7.0
- Severity:
- CVSS-BT: High
Compliant code
The application restricts access to sensitive resources only to authorized users
app.post('/accessAdmin', hashedSentCode, function(req, res, next){
User.register({ _id: req.user.id}, req.body, function(err, user){
//Validating user has privileges and is correctly logged in
if (req.body.isLoggedIn && user.isSuperAdmin){
run userMFA();
user.allowBIOSAccess = True;
}
res.redirect('/profile/BIOSManager');
}
});
Non compliant code
The application allows access to BIOS without verifying permissions and secure authentication
app.post('/accessAdmin', function(req, res, next){
User.register({ _id: req.user.id}, req.body, function(err, user){
user.allowBIOSAccess = True;
res.redirect('/profile/BIOSManager');
}
});
Requirements
- 227.Display access notification
- 228.Authenticate using standard protocols
- 229.Request access credentials
- 231.Implement a biometric verification component
- 235.Define credential interface
- 264.Request authentication
- 319.Make authentication options equally secure
Fixes
