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CVE-2017-6747

UnknownEPSS 5.48%

Last modified

CVE-2017-6747 is a vulnerability of currently unknown severity. A vulnerability in the authentication module of Cisco Identity Services Engine (ISE) could allow an unauthenticated, remote attacker to bypass local authentication. The vulnerability is due to improper handling of authentication requests and policy assignment for externally authenticated users. EPSS estimates a 5.48% chance of exploitation in the next 30 days.

Description

A vulnerability in the authentication module of Cisco Identity Services Engine (ISE) could allow an unauthenticated, remote attacker to bypass local authentication. The vulnerability is due to improper handling of authentication requests and policy assignment for externally authenticated users. An attacker could exploit this vulnerability by authenticating with a valid external user account that matches an internal username and incorrectly receiving the authorization policy of the internal account. An exploit could allow the attacker to have Super Admin privileges for the ISE Admin portal. This vulnerability does not affect endpoints authenticating to the ISE. The vulnerability affects Cisco ISE, Cisco ISE Express, and Cisco ISE Virtual Appliance running Release 1.3, 1.4, 2.0.0, 2.0.1, or 2.1.0. Release 2.2.x is not affected. Cisco Bug IDs: CSCvb10995.

Metrics

EPSS Probability
5.48%

91.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
CiscoIdentity Services Engine1.3\(0.722\)
CiscoIdentity Services Engine1.3\(0.876\)
CiscoIdentity Services Engine1.3\(0.909\)
CiscoIdentity Services Engine1.3\(106.146\)
CiscoIdentity Services Engine1.3\(120.135\)
CiscoIdentity Services Engine1.4\(0.109\)
CiscoIdentity Services Engine1.4\(0.181\)
CiscoIdentity Services Engine1.4\(0.253\)
CiscoIdentity Services Engine1.4\(0.908\)
CiscoIdentity Services Engine2.0\(0.147\)
CiscoIdentity Services Engine2.0\(0.169\)
CiscoIdentity Services Engine2.0\(0.222\)
CiscoIdentity Services Engine2.0\(1.130\)
CiscoIdentity Services Engine2.0_base
CiscoIdentity Services Engine2.1\(0.474\)
CiscoIdentity Services Engine2.1\(0.800\)
CiscoIdentity Services Engine2.1\(102.101\)
CiscoIdentity Services Engine2.1_base

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2017-6747?
A vulnerability in the authentication module of Cisco Identity Services Engine (ISE) could allow an unauthenticated, remote attacker to bypass local authentication. The vulnerability is due to improper handling of authentication requests and policy assignment for externally authenticated users. An attacker could exploit this vulnerability by authenticating with a valid external user account that matches an internal username and incorrectly receiving the authorization policy of the internal account. An exploit could allow the attacker to have Super Admin privileges for the ISE Admin portal. This vulnerability does not affect endpoints authenticating to the ISE. The vulnerability affects Cisco ISE, Cisco ISE Express, and Cisco ISE Virtual Appliance running Release 1.3, 1.4, 2.0.0, 2.0.1, or 2.1.0. Release 2.2.x is not affected. Cisco Bug IDs: CSCvb10995.
How severe is CVE-2017-6747?
Severity scoring for CVE-2017-6747 is pending analysis. The EPSS model estimates a 5.48% probability of exploitation in the next 30 days.
How do I fix CVE-2017-6747?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST