CVE-2022-20691
First published: Wed Dec 07 2022(Updated: )
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.
Credit: ykramarz@cisco.com ykramarz@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco ATA 190 firmware | ||
| Cisco ATA 190 Series Analog Telephone Adapter | ||
| Cisco ATA 191 | <11.2.2 | |
| Cisco ATA | ||
| Cisco ATA 191 | <12.0.1 | |
| Cisco ATA 191 | =12.0.1 | |
| Cisco ATA 191 | =12.0.1-sr1 | |
| Cisco ATA 191 | =12.0.1-sr2 | |
| Cisco ATA 191 | =12.0.1-sr3 | |
| Cisco ATA 191 | =12.0.1-sr4 | |
| Cisco ATA | ||
| Cisco ATA 192 | <11.2.2 | |
| Cisco ATA | ||
| All of | ||
| Cisco ATA 190 firmware | ||
| Cisco ATA 190 Series Analog Telephone Adapter | ||
| All of | ||
| Cisco ATA 191 | <11.2.2 | |
| Cisco ATA | ||
| All of | ||
| Any of | ||
| Cisco ATA 191 | <12.0.1 | |
| Cisco ATA 191 | =12.0.1 | |
| Cisco ATA 191 | =12.0.1-sr1 | |
| Cisco ATA 191 | =12.0.1-sr2 | |
| Cisco ATA 191 | =12.0.1-sr3 | |
| Cisco ATA 191 | =12.0.1-sr4 | |
| Cisco ATA | ||
| All of | ||
| Cisco ATA 192 | <11.2.2 | |
| Cisco ATA |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2022-20691?
CVE-2022-20691 has a high severity rating as it allows unauthenticated adjacent attackers to create a Denial of Service condition.
How do I fix CVE-2022-20691?
To fix CVE-2022-20691, you need to upgrade to the latest firmware version provided by Cisco for the affected ATA 190 Series.
What products are affected by CVE-2022-20691?
CVE-2022-20691 affects the Cisco ATA 190 Series Adaptive Telephone Adapter and certain versions of Cisco ATA 191 firmware.
What type of attack can CVE-2022-20691 enable?
CVE-2022-20691 can enable a Denial of Service attack, disrupting the functionality of affected devices.
Is there a workaround for CVE-2022-20691?
No specific workaround is provided for CVE-2022-20691, and upgrading the firmware is the recommended action.
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- agent/software-canonical-lookup
- vendor/cisco
- canonical/cisco ata 190 firmware
- canonical/cisco ata 190 series analog telephone adapter
- canonical/cisco ata 191
- canonical/cisco ata
- version/cisco ata 191/12.0.1
- version/cisco ata 191/12.0.1-sr1
- version/cisco ata 191/12.0.1-sr2
- version/cisco ata 191/12.0.1-sr3
- version/cisco ata 191/12.0.1-sr4
- canonical/cisco ata 192