Search criteria
6 vulnerabilities found for nexus_9236c_firmware by cisco
CVE-2021-27853 (GCVE-0-2021-27853)
Vulnerability from nvd – Published: 2022-09-27 17:55 – Updated: 2025-11-04 19:12
VLAI?
Title
L2 network filtering can be bypassed using stacked VLAN0 and LLC/SNAP headers
Summary
Layer 2 network filtering capabilities such as IPv6 RA guard or ARP inspection can be bypassed using combinations of VLAN 0 headers and LLC/SNAP headers.
Severity ?
4.7 (Medium)
CWE
- CWE-290 - Authentication Bypass by Spoofing
Assigner
References
Impacted products
Credits
Etienne Champetier (@champtar) <champetier.etienne@gmail.com>
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CVE-2022-20824 (GCVE-0-2022-20824)
Vulnerability from nvd – Published: 2022-08-25 18:40 – Updated: 2024-11-06 16:07
VLAI?
Title
Cisco FXOS and NX-OS Software Cisco Discovery Protocol Denial of Service and Arbitrary Code Execution Vulnerability
Summary
A vulnerability in the Cisco Discovery Protocol feature of Cisco FXOS Software and Cisco NX-OS Software could allow an unauthenticated, adjacent attacker to execute arbitrary code with root privileges or cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper input validation of specific values that are within a Cisco Discovery Protocol message. An attacker could exploit this vulnerability by sending a malicious Cisco Discovery Protocol packet to an affected device. A successful exploit could allow the attacker to execute arbitrary code with root privileges or cause the Cisco Discovery Protocol process to crash and restart multiple times, which would cause the affected device to reload, resulting in a DoS condition. Note: Cisco Discovery Protocol is a Layer 2 protocol. To exploit this vulnerability, an attacker must be in the same broadcast domain as the affected device (Layer 2 adjacent).
Severity ?
8.8 (High)
CWE
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Cisco | Cisco NX-OS Software |
Affected:
n/a
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CVE-2022-20823 (GCVE-0-2022-20823)
Vulnerability from nvd – Published: 2022-08-25 18:40 – Updated: 2024-11-06 16:07
VLAI?
Title
Cisco NX-OS Software OSPFv3 Denial of Service Vulnerability
Summary
A vulnerability in the OSPF version 3 (OSPFv3) feature of Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to incomplete input validation of specific OSPFv3 packets. An attacker could exploit this vulnerability by sending a malicious OSPFv3 link-state advertisement (LSA) to an affected device. A successful exploit could allow the attacker to cause the OSPFv3 process to crash and restart multiple times, causing the affected device to reload and resulting in a DoS condition. Note: The OSPFv3 feature is disabled by default. To exploit this vulnerability, an attacker must be able to establish a full OSPFv3 neighbor state with an affected device. For more information about exploitation conditions, see the Details section of this advisory.
Severity ?
8.6 (High)
CWE
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Cisco | Cisco NX-OS Software |
Affected:
n/a
|
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CVE-2021-27853 (GCVE-0-2021-27853)
Vulnerability from cvelistv5 – Published: 2022-09-27 17:55 – Updated: 2025-11-04 19:12
VLAI?
Title
L2 network filtering can be bypassed using stacked VLAN0 and LLC/SNAP headers
Summary
Layer 2 network filtering capabilities such as IPv6 RA guard or ARP inspection can be bypassed using combinations of VLAN 0 headers and LLC/SNAP headers.
Severity ?
4.7 (Medium)
CWE
- CWE-290 - Authentication Bypass by Spoofing
Assigner
References
Impacted products
Credits
Etienne Champetier (@champtar) <champetier.etienne@gmail.com>
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CVE-2022-20824 (GCVE-0-2022-20824)
Vulnerability from cvelistv5 – Published: 2022-08-25 18:40 – Updated: 2024-11-06 16:07
VLAI?
Title
Cisco FXOS and NX-OS Software Cisco Discovery Protocol Denial of Service and Arbitrary Code Execution Vulnerability
Summary
A vulnerability in the Cisco Discovery Protocol feature of Cisco FXOS Software and Cisco NX-OS Software could allow an unauthenticated, adjacent attacker to execute arbitrary code with root privileges or cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper input validation of specific values that are within a Cisco Discovery Protocol message. An attacker could exploit this vulnerability by sending a malicious Cisco Discovery Protocol packet to an affected device. A successful exploit could allow the attacker to execute arbitrary code with root privileges or cause the Cisco Discovery Protocol process to crash and restart multiple times, which would cause the affected device to reload, resulting in a DoS condition. Note: Cisco Discovery Protocol is a Layer 2 protocol. To exploit this vulnerability, an attacker must be in the same broadcast domain as the affected device (Layer 2 adjacent).
Severity ?
8.8 (High)
CWE
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Cisco | Cisco NX-OS Software |
Affected:
n/a
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CVE-2022-20823 (GCVE-0-2022-20823)
Vulnerability from cvelistv5 – Published: 2022-08-25 18:40 – Updated: 2024-11-06 16:07
VLAI?
Title
Cisco NX-OS Software OSPFv3 Denial of Service Vulnerability
Summary
A vulnerability in the OSPF version 3 (OSPFv3) feature of Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to incomplete input validation of specific OSPFv3 packets. An attacker could exploit this vulnerability by sending a malicious OSPFv3 link-state advertisement (LSA) to an affected device. A successful exploit could allow the attacker to cause the OSPFv3 process to crash and restart multiple times, causing the affected device to reload and resulting in a DoS condition. Note: The OSPFv3 feature is disabled by default. To exploit this vulnerability, an attacker must be able to establish a full OSPFv3 neighbor state with an affected device. For more information about exploitation conditions, see the Details section of this advisory.
Severity ?
8.6 (High)
CWE
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Cisco | Cisco NX-OS Software |
Affected:
n/a
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"lang": "eng",
"value": "CWE-126"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "20220824 Cisco NX-OS Software OSPFv3 Denial of Service Vulnerability",
"refsource": "CISCO",
"url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-ospfv3-dos-48qutcu"
}
]
},
"source": {
"advisory": "cisco-sa-nxos-ospfv3-dos-48qutcu",
"defect": [
[
"CSCvz68748",
"CSCwb50012",
"CSCwb50013",
"CSCwb50015"
]
],
"discovery": "INTERNAL"
}
}
}
},
"cveMetadata": {
"assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"assignerShortName": "cisco",
"cveId": "CVE-2022-20823",
"datePublished": "2022-08-25T18:40:30.942730Z",
"dateReserved": "2021-11-02T00:00:00",
"dateUpdated": "2024-11-06T16:07:37.716Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}