CVE-2022-20686
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-2022-20686?
CVE-2022-20686 is considered a critical vulnerability as it allows remote attackers to execute arbitrary code on affected devices.
How do I fix CVE-2022-20686?
To mitigate CVE-2022-20686, you should update the firmware of Cisco ATA 190 Series Analog Telephone Adapters to the latest version provided by Cisco.
Which Cisco devices are affected by CVE-2022-20686?
CVE-2022-20686 affects the Cisco ATA 190 Series Analog Telephone Adapter firmware.
Can CVE-2022-20686 be exploited remotely?
Yes, CVE-2022-20686 can be exploited by unauthenticated remote attackers.
What potential impact does CVE-2022-20686 have on my system?
The impact of CVE-2022-20686 includes arbitrary code execution on the device and potential service interruptions as it can restart the LLDP service.
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- agent/last-modified-date
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- agent/softwarecombine
- agent/tags
- 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