CVE-2022-20687
First published: Wed Dec 07 2022(Updated: )
Multiple vulnerabilities in the Link Layer Discovery Protocol (LLDP) functionality of Cisco ATA 190 Series Analog Telephone Adapter firmware could allow an unauthenticated, remote attacker to execute arbitrary code on an affected device and cause the LLDP service to restart. These vulnerabilities are due to missing length validation of certain LLDP packet header fields. An attacker could exploit these vulnerabilities by sending a malicious LLDP packet to an affected device. A successful exploit could allow the attacker to execute code on the affected device and cause LLDP to restart unexpectedly, resulting in a denial of service (DoS) condition.
Credit: ykramarz@cisco.com ykramarz@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| 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 | ||
| 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 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2022-20687?
CVE-2022-20687 is considered to have a high severity due to its potential to allow an unauthenticated remote attacker to execute arbitrary code.
How do I fix CVE-2022-20687?
To fix CVE-2022-20687, update the Cisco ATA 190 Series Analog Telephone Adapter firmware to the latest version provided by Cisco.
What devices are affected by CVE-2022-20687?
CVE-2022-20687 affects Cisco ATA 190, ATA 191, and ATA 192 devices running specific vulnerable firmware versions.
Can CVE-2022-20687 lead to a denial of service?
Yes, CVE-2022-20687 can cause the LLDP service to restart, potentially leading to a denial of service for users.
Is authentication required to exploit CVE-2022-20687?
No, CVE-2022-20687 can be exploited by an unauthenticated remote attacker, increasing its risk.
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- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/source
- agent/tags
- agent/softwarecombine
- collector/nvd-api
- source/NVD
- agent/software-canonical-lookup
- agent/software-canonical-lookup-request
- collector/nvd-index
- 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