CVE-2002-1098

CVE-2002-1098 affects Cisco VPN 3000 Concentrator 2.2.x and 3.x prior to 3.5.3. When the XML filter configuration is enabled, the device’s HTTPS on Public Inbound (XML-Auto)(forward/in) rule sets the protocol to ANY, allowing arbitrary traffic to pass through the concentrator. The available docum...

CVE-2002-1092

CVE-2002-1092 affects Cisco VPN 3000 Concentrator 3.6(Rel) and earlier, and 2.x.x, where using internal authentication with group accounts and no user accounts allows remote VPN clients to log in via PPTP or IPSEC user authentication. Root cause identified in multiple advisories for the Cisco VPN...

CVE-2002-0848

CVE-2002-0848 affects Cisco VPN 5000 series concentrator hardware 6.0.21.0002 and earlier, and 5.2.23.0003 and earlier. When using RADIUS with a PAP or Challenge, the system sends the user password in cleartext in a validation retry request, enabling potential password capture by remote attackers...

Cisco VPN Concentrator Invalid Login DoS (CSCdu82823)

The remote VPN concentrator has a bug in its implementation of telnetd. This vulnerability is documented as Cisco bug ID CSCdu82823. C Tenable Network Security, Inc. Thanks to Nicolas FISCHBACH [email protected] for his help Ref:...

Cisco VPN 3000 Concentrator PPTP No Encryption Option Remote DoS (CSCdx39981)

The remote VPN concentrator is subject to a VPN client authentication vulnerability that can force a reload of the concentrator when a very large string for the username prompt is sent. This vulnerability is documented as Cisco bug ID CSCdx39981. C Tenable Network Security, Inc. Thanks to Nicolas...

Cisco VPN 3000 Concentrator Multiple Vulnerabilities (CSCdt56514, CSCdv66718)

The remote VPN concentrator is vulnerable to an internal PPTP / IPSEC authentication login attack. This vulnerability is documented as Cisco bug ID CSCdt56514. C Tenable Network Security, Inc. Thanks to Nicolas FISCHBACH [email protected] for his help include"compat.inc"; ifdescription...

Cisco VPN 3000 Concentrator Multiple Vulnerabilities (CSCdx07754, CSCdx24622, CSCdx24632)

The remote VPN concentrator is subject to multiple flaws : - XML public rule - HTML pages access - HTML login processing This vulnerability is documented as Cisco bug ID CSCdx07754, CSCdx24622 and CSCdx24632. C Tenable Network Security, Inc. Thanks to Nicolas FISCHBACH [email protected] for his...

CVE-2002-1096

Cisco VPN 3000 Concentrator 2.2.x, and 3.x before 3.5.1, allows restricted administrators to obtain user passwords that are stored in plaintext in HTML source code...

CVE-2002-1098

Cisco VPN 3000 Concentrator 2.2.x, and 3.x before 3.5.3, adds an "HTTPS on Public Inbound XML-Autoforward/in" rule but sets the protocol to "ANY" when the XML filter configuration is enabled, which ultimately allows arbitrary traffic to pass through the concentrator...

CVE-2002-1101

Cisco VPN 3000 Concentrator 2.2.x, 3.6Rel, and 3.x before 3.5.5, allows remote attackers to cause a denial of service via a long user name...

Cisco VPN Concentrator 3000 ISAKMP DoS details

Hi list, the subject says it all. I would like to share the details of the Cisco VPN Concentrator 3000 ISAKMP packet parsing vulnerability mentioned at http://www.cisco.com/warp/public/707/vpn3k-multiple-vuln-pub.shtml The bug affects all software versions including 3.6.0 and I hope everyone got...

CVE-2002-1103

The CVE-2002-1103 issue affects Cisco VPN 3000 Concentrator devices running 2.2.x, 3.6(Rel), and 3.x before 3.5.5. The root cause is handling ISAKMP packets; malformed or an excessive number of ISAKMP packets can cause the device to reload, resulting in a denial of service. Attacks can be perform...

CVE-2002-1100

CVE-2002-1100 affects Cisco VPN 3000 Concentrator versions 2.2.x and 3.x prior to 3.5.3. The vulnerability allows remote attackers to trigger a denial of service (crash) by sending an excessively long username or password to the HTML login interface. The issue is evidenced by the NVD description ...

CVE-2002-1101

Cisco VPN 3000 Concentrator versions 2.2.x, 3.6(Rel), and 3.x before 3.5.5 are affected by CVE-2002-1101. The vulnerability allows remote attackers to cause a denial of service by sending a long username, indicating an input handling flaw that can exhaust resources and affect availability. No exp...

CVE-2002-1094

Cisco VPN 3000 Series Concentrator Information Disclosure (CVE-2002-1094) affects 2.x.x and 3.x.x firmware up to but not including 3.5.4. The vulnerability leaks potentially sensitive information via banners in SSH, FTP, or an incorrect HTTP request, allowing remote information disclosure without...

Cisco VPN 3000 Series Concentrator Client - Authentication Denial of Service

// source: https://www.securityfocus.com/bid/5620/info Cisco VPN 3000 series concentrators are prone to a denial of service condition when receiving an overly long username string during authentication from a VPN client. Successful exploitation will cause the device to reload. / ISAKMP Cisco VPN...

CVE-2001-0757

Cisco 6400 NRP2 (Access Concentrator Node Route Processor 2) is affected on IOS releases earlier than 12.1(05)DC01. The module lets Telnet access occur when no vty password is set, enabling a remote attacker to gain unauthorized access and potentially modify device configuration or affect traffic...

Cisco 6400 Access Concentrator Node Route Processor 2 (NRP2) module permits telnet access when no password has been set

Overview The Cisco 6400 Access Concentrator Node Route Processor 2 NRP2 module permits unauthenticated telnet access when no password has been set. Description The Access Concentrator Node Route Processor is a router blade for the Cisco 6400. It's purpose is to aggregate and terminate incoming...

VPN3000 Concentrator TELNET Vulnerability

...

Nortel CES (3DES version) offers false sense of security when using IPSEC

Short summary: Nortel Networks Contivity Extranet Switch CES has a weakness in it's IPSEC key exchange when using 3DES encryption. The 3DES encryption keys are encrypted using single DES during initial key exchange thus reducing cryptographic strength to 56-bit DES level. The weakness affects bot...