EN

CVE-2023-20185

High
7.4
0.05.010.0
Year
2023
Published
Jul 12, 2023
Known Affected Devices
0
CVSS Score
7.4

What is CVE-2023-20185?

A vulnerability in the Cisco ACI Multi-Site CloudSec encryption feature of Cisco Nexus 9000 Series Fabric Switches in ACI mode could allow an unauthenticated, remote attacker to read or modify intersite encrypted traffic. This vulnerability is due to an issue with the implementation of the ciphers that are used by the CloudSec encryption feature on affected switches. An attacker with an on-path position between the ACI sites could exploit this vulnerability by intercepting intersite encrypted traffic and using cryptanalytic techniques to break the encryption. A successful exploit could allow the attacker to read or modify the traffic that is transmitted between the sites. Cisco has not released and will not release software updates that address this vulnerability.

CVSS Vector Breakdown

CVSS 3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
AV
Attack Vector
Network

Exploitable remotely over the network without requiring access to the local system.

AC
Attack Complexity
High

Exploit requires specific conditions, timing, or configuration to succeed.

PR
Privileges Required
None

No authentication required. Any anonymous user can exploit this vulnerability.

UI
User Interaction
None

No user interaction required. Exploit runs without any victim action.

S
Scope
Unchanged

Exploiting the vulnerability only affects the vulnerable component itself.

C
Confidentiality Impact
High

Complete loss of confidentiality. All data on the component may be exposed.

I
Integrity Impact
High

Complete loss of integrity. Attacker can modify any file or data on the component.

A
Availability Impact
None

No availability impact. Service remains fully operational.

Known Affected Devices

Cisco Cisco ISR 4431 Cisco Cisco ASR 9910 Cisco Cisco Catalyst 2960X-48TS-L Cisco Cisco Catalyst 2960XR-24TS-I Cisco Cisco Catalyst 4503-E Cisco Cisco Catalyst 9300-48UXM Cisco Cisco Catalyst 9300L-24P-4G Cisco Cisco Nexus 7010 Cisco Cisco ASA 5508-X Cisco Cisco ASA 5512-X Cisco Cisco ASA 5516-X Cisco Cisco ASA 5545-X Cisco Cisco ASA 5585-X SSP-40 Cisco Cisco ASA 5585-X SSP-60 Cisco Cisco Firepower 1140 Cisco Cisco Firepower 1150 Cisco Cisco Firepower 2120 Cisco Cisco Firepower 2130 Cisco Cisco Firepower 4110 Cisco Cisco Aironet 1815M Cisco Cisco Aironet 2802E Cisco Cisco Meraki MS390-48U

FAQ

How severe is CVE-2023-20185?

CVE-2023-20185 has a CVSS score of 7.4/10, rated as High. This is a high severity vulnerability and should be patched as soon as possible.

What does the CVSS score mean for CVE-2023-20185?

CVSS (Common Vulnerability Scoring System) rates vulnerability severity from 0.0 to 10.0. CVE-2023-20185 scores 7.4/10 (High). Scores 9.0–10.0 are Critical, 7.0–8.9 are High, 4.0–6.9 are Medium, and below 4.0 are Low.

Which devices are affected by CVE-2023-20185?

The list of devices confirmed to be affected by CVE-2023-20185 is shown in the "Affected Devices" section above. Check your firmware version against the vendor security advisory and apply the latest patch.

How do I fix or mitigate CVE-2023-20185?

Apply the latest firmware or software update from the vendor. Check the References section above for official advisories and patch notes. If no patch is available, consider disabling the affected feature or isolating the device from untrusted networks.