Cisco Secure ACS up to 3.3.1 EAP-TLS improper authentication

CVSS Meta Temp Score
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CTI Interest Score
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4.3$0-$5k0.00

Summaryinfo

A vulnerability marked as critical has been reported in Cisco Secure ACS up to 3.3.1. The affected element is an unknown function of the component EAP-TLS Handler. Performing a manipulation results in improper authentication. This vulnerability was named CVE-2004-1099. The attack may be initiated remotely. In addition, an exploit is available. To fix this issue, it is recommended to deploy a patch.

Detailsinfo

A vulnerability classified as critical has been found in Cisco Secure ACS up to 3.3.1. This affects an unknown code of the component EAP-TLS Handler. The manipulation with an unknown input leads to a improper authentication vulnerability. CWE is classifying the issue as CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. This is going to have an impact on confidentiality, and integrity. The summary by CVE is:

Cisco Secure Access Control Server for Windows (ACS Windows) and Cisco Secure Access Control Server Solution Engine (ACS Solution Engine) 3.3.1, when the EAP-TLS protocol is enabled, does not properly handle expired or untrusted certificates, which allows remote attackers to bypass authentication and gain unauthorized access via a "cryptographically correct" certificate with valid fields such as the username.

The bug was discovered 11/02/2004. The weakness was presented 11/02/2004 with Cisco (Website). It is possible to read the advisory at cisco.com. This vulnerability is uniquely identified as CVE-2004-1099 since 11/30/2004. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are unknown but a public exploit is available.

After immediately, there has been an exploit disclosed. It is declared as proof-of-concept.

Upgrading to version 3.3.2 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at cisco.com. The best possible mitigation is suggested to be patching the affected component. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 31772.

The vulnerability is also documented in the databases at X-Force (17936), SecurityFocus (BID 11577†), OSVDB (11379†), Secunia (SA13066†) and SecurityTracker (ID 1012046†). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.8
VulDB Meta Temp Score: 4.3

VulDB Base Score: 4.8
VulDB Temp Score: 4.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Improper authentication
CWE: CWE-287
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍
Exploit Delay Time: 🔍

Upgrade: Secure ACS 3.3.2
Patch: cisco.com
TippingPoint: 🔍

McAfee IPS: 🔍
McAfee IPS Version: 🔍

PaloAlto IPS: 🔍

Timelineinfo

11/02/2004 🔍
11/02/2004 +0 days 🔍
11/02/2004 +0 days 🔍
11/02/2004 +0 days 🔍
11/02/2004 +0 days 🔍
11/02/2004 +0 days 🔍
11/03/2004 +1 days 🔍
11/03/2004 +0 days 🔍
11/03/2004 +0 days 🔍
11/30/2004 +26 days 🔍
01/10/2005 +41 days 🔍
04/23/2006 +468 days 🔍
06/30/2019 +4816 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco.com
Researcher: http://www.cisco.com
Organization: Cisco
Status: Confirmed

CVE: CVE-2004-1099 (🔍)
GCVE (CVE): GCVE-0-2004-1099
GCVE (VulDB): GCVE-100-963
X-Force: 17936 - Cisco Secure ACS for Windows and Solution Engine EAP-TLS bypass authentication, Medium Risk
SecurityFocus: 11577 - Cisco Secure Access Control Server Remote Authentication Bypass Vulnerability
Secunia: 13066 - Cisco Secure ACS EAP-TLS User Authentication Bypass Vulnerability, Moderately Critical
OSVDB: 11379 - Cisco Secure Access Control Server EAP-TLS Authentication Bypass
SecurityTracker: 1012046
SecuriTeam: securiteam.com
Vulnerability Center: 11181 - [cisco-sa-20041102-acs-eap-tls] Cisco ACS Authentication Bypass via Faked Certificate, Critical

scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 11/03/2004 12:13
Updated: 06/30/2019 09:00
Changes: 11/03/2004 12:13 (90), 06/30/2019 09:00 (3)
Complete: 🔍
Cache ID: 216:69F:103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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