Vulnerability Details : CVE-2022-20691

A vulnerability in the Cisco Discovery Protocol functionality of Cisco ATA 190 Series Adaptive Telephone Adapter firmware could allow an unauthenticated, adjacent attacker to cause a DoS condition of an affected device. This vulnerability is due to missing length validation of certain Cisco Discovery Protocol packet header fields. An attacker could exploit this vulnerability by sending crafted Cisco Discovery Protocol packets to an affected device. A successful exploit could allow the attacker to cause the device to exhaust available memory and cause the service to restart. Cisco has released firmware updates that address this vulnerability.
Published 2022-12-12 09:15:13
Updated 2024-01-25 17:15:15
Source Cisco Systems, Inc.
View at NVD,   CVE.org
Vulnerability category: Input validationDenial of service

Exploit prediction scoring system (EPSS) score for CVE-2022-20691

EPSS FAQ
0.05%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 20 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2022-20691

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
6.5
 MEDIUM CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
2.8
3.6
 NIST
5.3
 MEDIUM CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
3.9
1.4
 Cisco Systems, Inc.

CWE ids for CVE-2022-20691

  • The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.
    Assigned by:
    • nvd@nist.gov (Primary)
    • ykramarz@cisco.com (Secondary)
  • The product receives input that is expected to specify a quantity (such as size or length), but it does not validate or incorrectly validates that the quantity has the required properties.
    Assigned by: nvd@nist.gov (Primary)

References for CVE-2022-20691

Products affected by CVE-2022-20691

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