CVE-2022-20824
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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.40%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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).
- CVSS 3.1
- 8.8 HIGHCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.40% probability · 33th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-121, CWE-787
- Affected
- cisco/mds 9506 firmware · cisco/mds 9513 firmware · cisco/mds 9706 firmware · cisco/mds 9710 firmware · cisco/mds 9718 firmware · cisco/nexus 1000v firmware · cisco/nexus 3016 firmware · cisco/nexus 3016q firmware · cisco/nexus 3048 firmware · cisco/nexus 3064 firmware · cisco/nexus 3064-32t firmware · cisco/nexus 3064-t firmware · cisco/nexus 3064-x firmware · cisco/nexus 3064t firmware · cisco/nexus 3064x firmware · cisco/nexus 3100 firmware · cisco/nexus 3100-v firmware · cisco/nexus 3100-z firmware · cisco/nexus 3100v firmware · cisco/nexus 31108pc-v firmware · +40 more
- Source
- psirt@cisco.com
References
- https://security.netapp.com/advisory/ntap-20220923-0001/Third Party Advisory
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-cdp-dos-ce-wWvPucC9Vendor Advisory
- https://security.netapp.com/advisory/ntap-20220923-0001/Third Party Advisory
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-cdp-dos-ce-wWvPucC9Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.