Concurrent sessions control bypass
Description
It is possible to bypass concurrent session control by going to any valid URL in the application when the error that there is already a session started appears.
Impact
Access concurrently to the application with the same user causing loss of traceability.
Recommendation
Immediately invalidate previous session when logging in from a new location.
Threat
Malicious actor from intranet.
Expected Remediation Time
⌚ 30 minutes.
Score
Default score using CVSS 3.1. It may change depending on the context of the src.
Base
- Attack vector: A
- Attack complexity: L
- Privileges required: L
- User interaction: N
- Scope: U
- Confidentiality: N
- Integrity: L
- Availability: N
Temporal
- Exploit code maturity: X
- Remediation level: X
- Report confidence: X
Result
- Vector string: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N/E:X/RL:X/RC:X
- Score:
- Base: 3.5
- Temporal: 3.5
- Severity:
- Base: Low
- Temporal: Low
Score 4.0
Default score using CVSS 4.0. It may change depending on the context of the src.
Base 4.0
- Attack vector: A
- Attack complexity: L
- Attack Requirements: N
- Privileges required: L
- User interaction: N
- Confidentiality (VC): N
- Integrity (VI): L
- Availability (VA): N
- Confidentiality (SC): N
- Integrity (SI): N
- Availability (SA): N
Threat 4.0
- Exploit maturity: X
Result 4.0
- Vector string: CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X
- Score:
- CVSS-BT: 5.1
- Severity:
- CVSS-BT: Medium
Requirements
Fixes
Free trial
Search for vulnerabilities in your apps for free with Fluid Attacks' automated security testing! Start your 21-day free trial and discover the benefits of the Continuous Hacking Essential plan. If you prefer the Advanced plan, which includes the expertise of Fluid Attacks' hacking team, fill out this contact form.