Cisco Digital Network Architecture Center (DNA…: Use of Hard-coded Cryptographic Key
CVE-2024-20350 is a high-severity use of hard-coded cryptographic key vulnerability in Cisco Digital Network Architecture Center (DNA Center) from Cisco, with a CVSS 3.1 base score of 8.1 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. Affected Cisco Digital Network Architecture Center (DNA Center) versions: 1.4.0.0; 2.1.1.0; 2.1.1.3, and others listed below. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.42% chance of exploitation within 30 days, which is low compared with other CVEs.
High severity with no evidence of exploitation so far.
What to do
- Check which version of Cisco Digital Network Architecture Center (DNA Center) you run against the affected versions below, and install the vendor's latest release.
- Read the advisory on sec.cloudapps.cisco.com for workarounds and exact fixed builds.
- Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Cisco | Cisco Digital Network Architecture Center (DNA Center) | 1.4.0.0; 2.1.1.0; 2.1.1.3; 2.1.2.0; 2.1.2.3; 2.1.2.4; 2.1.2.5; 2.2.1.0; and 32 more ranges | Not stated |
| Cisco | digital_network_architecture_center | 1.4.0.0; 2.1.1.0; 2.1.1.3; 2.1.2.0; 2.1.2.3; 2.1.2.4; 2.1.2.5; 2.2.1.0; and 32 more ranges | Not stated |
| Cisco | Catalyst Center | 1.0.0; 1.4.0.0; 2.1.1.0; 2.1.1.3; 2.1.2.0; 2.1.2.3; 2.1.2.4; 2.1.2.5; and 32 more ranges | Not stated |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- NetworkCan be exploited remotely over a network, including the internet.
- Attack complexity
- HighSuccess depends on conditions outside the attacker's control.
- Privileges required
- NoneNo account or login is needed.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 7.5 | High | CNA (cisco.com) |
| CVSS 3.1 | 8.1 | High | NVD |
Official description
A vulnerability in the SSH server of Cisco Catalyst Center, formerly Cisco DNA Center, could allow an unauthenticated, remote attacker to impersonate a Cisco Catalyst Center appliance. This vulnerability is due to the presence of a static SSH host key. An attacker could exploit this vulnerability by performing a machine-in-the-middle attack on SSH connections, which could allow the attacker to intercept traffic between SSH clients and a Cisco Catalyst Center appliance. A successful exploit could allow the attacker to impersonate the affected appliance, inject commands into the terminal session, and steal valid user credentials.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Use of Hard-coded Cryptographic Key
The product uses a hard-coded, unchangeable cryptographic key.
How developers prevent this class of flaw
- Prevention schemes mirror that of hard-coded password storage.
More Use of Hard-coded Cryptographic Key vulnerabilities (CWE-321)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Advisories
Other vulnerabilities in Cisco Digital Network Architecture Center (DNA Center)
- 8.8 High severity
- 8.8 High severity
- 7.3 High severity
- 8.2 High severity
- 8.8 High severity
- 8.8 High severity
Recent Use of Hard-coded Cryptographic Key vulnerabilities
- 7.5 High severity
- 7.5 High severity
- 7.1 High severity
- 9.9 Critical severity
- 9.8 Critical severity
- 10.0 Critical severity
Spotted an error? Tell us.