Privilege Escalation Vulnerability in Cisco StarOS Software
CVE-2023-20046

8.8HIGH

Key Information:

Vendor

Cisco
Status
Cisco ASR 5000 Series Software
Cisco Ultra Cloud Core - User Plane Function
Vendor
CVE Published:
9 May 2023

What is CVE-2023-20046?

A security flaw exists in the key-based SSH authentication mechanism of Cisco StarOS Software that could allow an authenticated remote attacker to gain elevated privileges. This issue arises due to inadequate validation of user-provided credentials. An attacker can exploit this by submitting a valid SSH key with low privileges while impersonating a high-privileged user account from a configured source IP. If successful, this would enable unauthorized access to the device as a high-privileged user. Mitigations are available to address this issue.

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Affected Version(s)

Cisco ASR 5000 Series Software 21.11.0

Cisco ASR 5000 Series Software 21.11.1

Cisco ASR 5000 Series Software 21.11.2

References

https://sec.cloudapps.cisco.com/security/center/content/C...

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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