Cisco Certified Support Technician (CCST) CybersecurityVulnerability ManagementHard
A security analyst is reviewing a vulnerability scan report. One identified vulnerability is a 'Missing Security Header' on a web server, which has a CVSS Base Score of 4.3 (Medium). The analyst determines that exploiting this vulnerability directly would require an attacker to chain it with other, more complex client-side vulnerabilities. Given this context, how might the 'Exploit Code Maturity' (E) CVSS Temporal metric be affected?
- AIt would likely be rated 'High' due to the potential for chaining.
- BIt would remain 'Not Defined' as it's a configuration issue.
- CIt would likely be rated 'Unproven' or 'Proof-of-Concept' due to the dependency on complex chaining.
- DIt would be rated 'Functional' because a header is clearly missing.
Show answer & explanationAnswer & explanation
Correct answer: C. It would likely be rated 'Unproven' or 'Proof-of-Concept' due to the dependency on complex chaining.
Exploit Code Maturity (E) reflects the current state of exploit techniques or code availability. If exploiting a vulnerability requires complex chaining with other client-side issues, it implies that readily available, fully functional exploit code is unlikely to exist. Therefore, the maturity would likely be 'Unproven' or 'Proof-of-Concept' rather than 'Functional' or 'High'.
Why the other options are wrong
- A. High maturity implies widespread, easy-to-use exploits, which contradicts 'complex chaining'.
- B. Exploit Code Maturity applies to all vulnerabilities, not just code flaws; it's about exploitability.
- D. A missing header is the vulnerability, but 'Functional' maturity means a reliable exploit exists, which is unlikely given the complex chaining requirement.
CVSS Exploit Code Maturity (E)
The CVSS Exploit Code Maturity (E) temporal metric measures the current state of exploit techniques or code availability for a vulnerability.
- Rated as Not Defined, Unproven, Proof-of-Concept, Functional, or High.
- Unproven means no exploit code is available or it's theoretical.
- Functional means reliable exploit code is available, but may require some customization.
- High means automated, easy-to-use exploit code is widely available.
Memory trick: Temporal is REM: Remediation, Exploit, Report.