Home/CVE/A vulnerability in the web-based management interface of Cisco DNA Center Software could allow an unauthenticated, remot
CVE

CVE-2021-1257

A vulnerability in the web-based management interface of Cisco DNA Center Software could allow an unauthenticated, remot

A vulnerability in the web-based management interface of Cisco DNA Center Software could allow an unauthenticated, remote attacker to conduct a cross-site request forgery (CSRF) attack to manipulate an authenticated user into executing malicious actions without their awareness or consent. The vulnerability is due to insufficient CSRF protections for the web-based management interface of an affected device. An attacker could exploit this vulnerability by persuading a web-based management user to follow a specially crafted link.

A successful exploit could allow the attacker to perform arbitrary actions on the device with the privileges of the authenticated user. These actions include modifying the device configuration, disconnecting the user's session, and executing Command Runner commands.

HIGH · CVSS 8.8 EPSS 0.00124
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules20 YARA rules0

Affected Products & Versions

2

Sigma Hunt Rules

20
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
productcriticalWMI Backdoor Exchange Transport Agent
productcriticalHackTool - BabyShark Agent Default URL Pattern
producthighSuspicious Windows Update Agent Empty Cmdline
producthighSuspicious BitLocker Access Agent Update Utility Execution
producthighAtera Agent Installation
producthighSuspicious Microsoft Office Child Process - MacOS

Scoring & Timeline

8.8
HIGH · CVSS v3.1 · psirt@cisco.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD20 Jan 2021 · 08:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.

Vendor Advisories

1
cisco-csafcisco-sa-dnac-csrf-dC83cMcV
🔗

References & Sources

2
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
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