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CVE-2023-20185

HIGH
Published 2023-07-12T13:50:35.866Z
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CVSS Score

V3.1
7.4
/10
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Base Score Metrics
Exploitability: N/A Impact: N/A

EPSS Score

v2025.03.14
0.001
probability
of exploitation in the wild

There is a 0.1% chance that this vulnerability will be exploited in the wild within the next 30 days.

Updated: 2025-06-25
Exploit Probability
Percentile: 0.349
Higher than 34.9% of all CVEs

Attack Vector Metrics

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED

Impact Metrics

Confidentiality
HIGH
Integrity
HIGH
Availability
NONE

Description

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.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

Cisco

Cisco NX-OS System Software in ACI Mode

Affected Versions:

14.0(1h) 14.0(2c) 14.0(3d) 14.0(3c) 14.1(1i) 14.1(1j) 14.1(1k) 14.1(1l) 14.1(2g) 14.1(2m) 14.1(2o) 14.1(2s) 14.1(2u) 14.1(2w) 14.1(2x) 14.2(1i) 14.2(1j) 14.2(1l) 14.2(2e) 14.2(2f) 14.2(2g) 14.2(3j) 14.2(3l) 14.2(3n) 14.2(3q) 14.2(4i) 14.2(4k) 14.2(4o) 14.2(4p) 14.2(5k) 14.2(5l) 14.2(5n) 14.2(6d) 14.2(6g) 14.2(6h) 14.2(6l) 14.2(7f) 14.2(7l) 14.2(6o) 14.2(7q) 14.2(7r) 14.2(7s) 14.2(7t) 14.2(7u) 14.2(7v) 14.2(7w) 15.0(1k) 15.0(1l) 15.0(2e) 15.0(2h) 15.1(1h) 15.1(2e) 15.1(3e) 15.1(4c) 15.2(1g) 15.2(2e) 15.2(2f) 15.2(2g) 15.2(2h) 15.2(3e) 15.2(3f) 15.2(3g) 15.2(4d) 15.2(4e) 15.2(5c) 15.2(5d) 15.2(5e) 15.2(4f) 15.2(6e) 15.2(6g) 15.2(7f) 15.2(7g) 15.2(8d) 15.2(8e) 15.2(8f) 15.2(8g) 15.2(8h) 16.0(1g) 16.0(1j) 16.0(2h) 16.0(2j) 16.0(3d) 16.0(3e) 15.3(1d)

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

⚠ Unreviewed HIGH

GHSA-jpfv-6q3x-wx9f

Advisory Details

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 Scoring

CVSS Score

7.5

CVSS Vector

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

References

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2023-20185
WEB https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-aci-cloudsec-enc-Vs5Wn2sX

Advisory provided by GitHub Security Advisory Database. Published: July 12, 2023, Modified: January 25, 2024

References

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-aci-cloudsec-enc-Vs5Wn2sX
Published: 2023-07-12T13:50:35.866Z
Last Modified: 2024-08-02T09:05:36.245Z
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