Vulnerability Details : CVE-2022-20686
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.
Vulnerability category: Input validationExecute codeDenial of service
Products affected by CVE-2022-20686
- cpe:2.3:o:cisco:ata_190_firmware:-:*:*:*:on-premises:*:*:*
- cpe:2.3:o:cisco:ata_191_firmware:*:*:*:*:multiplatform:*:*:*
- cpe:2.3:o:cisco:ata_191_firmware:*:*:*:*:on-premises:*:*:*
- cpe:2.3:o:cisco:ata_191_firmware:12.0.1:sr1:*:*:on-premises:*:*:*
- cpe:2.3:o:cisco:ata_191_firmware:12.0.1:sr2:*:*:on-premises:*:*:*
- cpe:2.3:o:cisco:ata_191_firmware:12.0.1:sr4:*:*:on-premises:*:*:*
- cpe:2.3:o:cisco:ata_191_firmware:12.0.1:sr3:*:*:on-premises:*:*:*
- cpe:2.3:o:cisco:ata_191_firmware:12.0.1:-:*:*:on-premises:*:*:*
- cpe:2.3:o:cisco:ata_192_firmware:*:*:*:*:multiplatform:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2022-20686
0.12%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 47 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2022-20686
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.3
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |
3.9
|
1.4
|
NIST | |
|
5.3
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |
3.9
|
1.4
|
Cisco Systems, Inc. |
CWE ids for CVE-2022-20686
-
The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.Assigned by: nvd@nist.gov (Primary)
-
The product parses a formatted message or structure, but it does not handle or incorrectly handles a length field that is inconsistent with the actual length of the associated data.Assigned by: ykramarz@cisco.com (Secondary)
-
The product receives input that is expected to specify a quantity (such as size or length), but it does not validate or incorrectly validates that the quantity has the required properties.Assigned by: nvd@nist.gov (Primary)
References for CVE-2022-20686
-
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ata19x-multivuln-GEZYVvs
Cisco ATA 190 Series Analog Telephone Adapter Software VulnerabilitiesVendor Advisory
-
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ata19x-multivuln-GEZYVvs
Cisco ATA 190 Series Analog Telephone Adapter Software Vulnerabilities
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