CVE-2021-42853
Published: 10 March 2022
Summary
CVE-2021-42853 is a critical-severity Improper Input Validation (CWE-20) vulnerability in Riverbed Steelcentral Appinternals Dynamic Sampling Agent. Its CVSS base score is 9.1 (Critical).
Operationally, ranked in the top 29.1% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2021-29808
Vulnerability details
It was discovered that the SteelCentral AppInternals Dynamic Sampling Agent's (DSA) AgentDiagnosticServlet has directory traversal vulnerability at the "/api/appInternals/1.0/agent/diagnostic/logs" API. The affected endpoint does not have any input validation of the user's input that allows a malicious payload to be…
more
injected.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Directly implements checks on information inputs to reject invalid data before processing.
Security testing and developer training directly verify and enforce proper input validation, reducing exploitability of injection and malformed-data weaknesses.
Security testing and evaluation at multiple SDLC stages directly detects missing or flawed input validation, with the required remediation process ensuring fixes are applied.
Spam protection mechanisms perform filtering and detection on inbound/outbound messages, directly compensating for missing or weak input validation of unsolicited content.