Resource exhaustion in Cisco Ata 190
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.
Vulnerability class: DoS (Denial of Service)
EPSS: 0.006 (46.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.
Affected products
- Cisco Ata_190
- Cisco Ata_190_firmware
- Cisco Ata_191
- Cisco Ata_191_firmware — versions 12.0.1
- Cisco Ata_192
- Cisco Ata_192_firmware
- Cisco Analog Telephone Adaptor (Ata) Software — versions 1.2.1, 1.2.2 SR1, 1.2.2
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2022-20691?
- CVE-2022-20691 is a medium-severity vulnerability in Cisco Ata 190, classified under Uncontrolled Resource Consumption. CVSS score: 5.3/10. Published 2022-12-12.
- How severe is CVE-2022-20691?
- Medium severity. CVSS v3 base score is 5.3 out of 10.