SARA / Free Tools / KEV / CVE-2017-3881

CVE-2017-3881 on CISA KEV

A vulnerability in the Cisco Cluster Management Protocol (CMP) processing code in Cisco IOS and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a reload of an affected device or remotely execute code with elevated privileges. The Cluster Management

CISA KEV — Actively Exploited

Cisco IOS and IOS XE Remote Code Execution Vulnerability

Vendor / Product
— / Cisco / IOS and IOS XE
Added to KEV
2022-03-25
BOD 22-01 due
2022-04-15
Ransomware use
Unknown
CVSS / EPSS
· EPSS 94.28%

01What CISA says about this vulnerability

A vulnerability in the Cisco Cluster Management Protocol (CMP) processing code in Cisco IOS and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a reload of an affected device or remotely execute code with elevated privileges. The Cluster Management Protocol utilizes Telnet internally as a signaling and command protocol between cluster members. The vulnerability is…

02Required action — verbatim from CISA

Apply updates per vendor instructions.

03Notes & references

04SARA's analyst layer — why this matters

This vulnerability is currently on the CISA KEV list, which CISA only adds CVEs to when there is reliable evidence of active exploitation in the wild. For federal civilian agencies, BOD 22-01 requires remediation by the due date above. For everyone else, KEV is the strongest "patch immediately" signal you can get from public threat intel.

05Affected products (summary)

VendorProductVersions
na / Cisco IOS and IOS XE SoftwareCisco IOS and IOS XE Software

06Detection

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection:

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