CVE-2022-20691
Description
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.
How to fix
- cisco ata_191_firmware11.2.2, 12.0.1 or later
- cisco ata_192_firmware11.2.2 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| cisco ata_190_firmware | No range specified | — |
| cisco ata_191_firmware | v < 11.2.2, v < 12.0.1, 12.0.1 | 11.2.2, 12.0.1 |
| cisco ata_192_firmware | v < 11.2.2 | 11.2.2 |
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