PT-2023-2213 · Cisco · Cisco Duo

Published 2023-04-05 · Updated 2023-04-12 · CVE-2023-20123

Positive Technologies (AI Summary)

CVSS v3.1

6.3

Medium

Base vector

AV:P/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Cisco Duo versions (affected versions not specified)

Description The issue is related to a vulnerability in the offline access mode of Cisco Duo Two-Factor Authentication, which could allow an unauthenticated, physical attacker to replay valid user session credentials and gain unauthorized access to an affected device. This vulnerability exists because session credentials do not properly expire. An attacker could exploit this vulnerability by replaying previously used multifactor authentication (MFA) codes to bypass MFA protection.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Weakness Enumeration

CWE-294

Related Identifiers

BDU:2023-01961

CVE-2023-20123

Affected Products

Cisco Duo

References · 6

• https://osv.dev/vulnerability/CVE-2023-20123 · Vendor Advisory
• https://bdu.fstec.ru/vul/2023-01961 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2023-20123 · Security Note
• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-duo-replay-knuNKd · Vendor Advisory
• https://cybersecurity-help.cz/vdb/SB2023040656 · Note
• https://t.me/cvenotify/47628 · Telegram Post