Cyber Resilience

CVE-2021-42787

Critical

Published: 10 March 2022

Published
10 March 2022
Modified
21 November 2024
KEV Added
Patch
CVSS Score v3.1 9.4 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H
EPSS Score 0.0030 54.0th percentile
Risk Priority 19 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-42787 is a critical-severity Improper Input Validation (CWE-20) vulnerability in Riverbed Steelcentral Appinternals Dynamic Sampling Agent. Its CVSS base score is 9.4 (Critical).

Operationally, ranked in the top 46.0% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

It was discovered that the SteelCentral AppInternals Dynamic Sampling Agent's (DSA) AgentConfigurationServlet has directory traversal vulnerabilities at the "/api/appInternals/1.0/agent/configuration" 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

riverbed
steelcentral appinternals dynamic sampling agent
10.0.0 · 11.0.0 — 11.8.8 · 12.0.0 — 12.13.0

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.

addresses: CWE-20 CWE-22

Directly implements checks on information inputs to reject invalid data before processing.

addresses: CWE-20

Security testing and developer training directly verify and enforce proper input validation, reducing exploitability of injection and malformed-data weaknesses.

addresses: CWE-20

Security testing and evaluation at multiple SDLC stages directly detects missing or flawed input validation, with the required remediation process ensuring fixes are applied.

addresses: CWE-20

Spam protection mechanisms perform filtering and detection on inbound/outbound messages, directly compensating for missing or weak input validation of unsolicited content.

References