Vulnerabilities in Various Implementations of the RADIUS Protocol

CERT Advisory CA-2002-06 Vulnerabilities in Various Implementations of the RADIUS Protocol Original release date: March 4, 2002 Last revised: -- Source: CERT/CC A complete revision history can be found at the end of this file. Systems Affected Systems running any of the following RADIUS...

CVE-2001-1377

Multiple RADIUS implementations do not properly validate the Vendor-Length of the Vendor-Specific attribute, which allows remote attackers to cause a denial of service crash via a Vendor-Length that is less than 2...

CVE-2001-1376

Buffer overflow in digest calculation function of multiple RADIUS implementations allows remote attackers to cause a denial of service and possibly execute arbitrary code via shared secret data...

SECURITY.NNOV: few vulnerabilities in multiple RADIUS implementations

Topic : Vulnerabilities in multiple RADIUS clients and servers Author : 3APA3A [email protected] Released : December, 18 2001 Public release : March, 04 2002 Affected Software : Cistron = 1.6.4 12 Cistron 1.6.5 2 XtRadius = 1.1-pre1 12 FreeRADIUS = 0.3 12 ICRadius = 0.18.1 12 YARD Radius =...

Multiple implementations of the RADIUS protocol contain a digest calculation buffer overflow

Overview Multiple implementations of the RADIUS protocol contain a buffer overflow in the function that calculates message digests. Description During the message digest calculation, a string containing the shared secret is concatenated with a packet received without checking the size of the targ...

Multiple implementations of the RADIUS protocol do not adequately validate the vendor-length of the vendor-specific attributes

Overview Various RADIUS servers and clients permit the passing of vendor-specific and user-specific attributes. Several implementations of RADIUS fail to check the Vendor-Length of the Vendor-Specific attribute. It's possible to cause a denial of service against RADIUS servers with a malformed...

CVE-2001-1000

rlmadmin RADIUS management utility in Merit AAA Server 3.8M, 5.01, and possibly other versions, allows local users to read arbitrary files via a symlink attack on the rlmadmin.help file...

CVE-2001-1082

Directory traversal vulnerability in Livingston/Lucent RADIUS before 2.1.va.1 may allow attackers to read arbitrary files via a .. dot dot attack...

CVE-2001-1000

The CVE-2001-1000 issue affects Merit AAA Server’s rlmadmin RADIUS management utility (versions including 3.8M and 5.01). The vulnerability arises from a symlink attack on the rlmadmin.help file, allowing local users to read arbitrary files. The documented impact is local access with partial conf...

CVE-2001-1082

CVE-2001-1082 describes a directory traversal vulnerability in Livingston/Lucent RADIUS prior to 2.1.va.1, allowing an attacker to read arbitrary files via a .. (dot dot) path traversal attack. Affected component is the RADIUS service; root cause is improper input validation in file access logic....

Vulnerabilities in multiple RADIUS clients and servers

Topic : Vulnerabilities in multiple RADIUS clients and servers Author : 3APA3A Released : December, 18 2001 Affected Software : Lucent/Livingston RADIUS 3= 2.1 12? Cistron 3= 1.6.4 12 Cistron 1.6.5 2 XtRadius 3= 1.1-pre1 12 FreeRADIUS 3= 0.3 12 ICRadius 3= 0.18.1 12 YARD Radius 3= 1.0.19 12 Ascen...

Secure Computing SafeWord uses vulnerable ssh server

Secure Computing's SafeWord PremierAccess product earlier known as SafeWord Plus is an access control system capable of using several different authentication mechanisms for controlling access to network resources. The most used mechanism is one time passwords, generated by hardware or software...

more RADIUS authentication attack scenarios

Hello bugtraq, There is also problem with some vendor-specific RADIUS authentication implementation. For example Microsoft has it's specific attributes defined in RFC 2548. These attributes allow MS-CHAP and MS-CHAPv2 authentication via RADIUS. There is design flow in this authentication scenario...

RADIUS protocol and implementation weakness

There are few cryptographic problems allow to analize sniffed traffic. There is a possibility of request spoofing. Some implementation problems allow to DoS server or to elevate priveges...

Re: More problems with RADIUS (protocol and implementations)

I note that the original message didn't cite my short message to Bugtraq about security issues with RADIUS: http://cert.uni-stuttgart.de/archive/bugtraq/2000/12/msg00332.html Some points in that message were also covered by Joshua, he added a number of good points, and missed a few others...

An Analysis of the RADIUS Authentication Protocol

An Analysis of the RADIUS Authentication Protocol by Joshua Hill, InfoGard Laboratories www.infogard.com Last Modified Mon Nov 12 16:12:53 PST 2001 A current HTML version of this paper can be found at: http://www.untruth.org/josh/security/radius Please send comments to [email protected] 1...

More problems with RADIUS (protocol and implementations)

Hello bugtraq, There are more problems in RADIUS protocol and some of implementations: 1. There is no way RADIUS server can validate Access-Request packet really originated by NAS RADIUS client before and even after, if packet has no User-Password attribute decoding all attributes. It opens a...

rlmadmin v3.8M view file symlink vulnerability

-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- Ministry-Of-Peace - Security Advisory 01 - 07th Sept 2001 rlmadmin v3.8M view file symlink vulnerability -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- Overview: --------- rlmadmin is a user management...

CVE-2001-1000

rlmadmin RADIUS management utility in Merit AAA Server 3.8M, 5.01, and possibly other versions, allows local users to read arbitrary files via a symlink attack on the rlmadmin.help file...

Merit AAA RADIUS Server 3.8 - rlmadmin Symbolic Link

source: https://www.securityfocus.com/bid/3302/info The 'rlmadmin' user management utility included with the Merit AAA RADIUS Server package is susceptible to a trivial symbolic link attack. The program allows users to specify a directory from which configuration files should be loaded at runtime...