CVE-2005-2640

The CVE describes a behavioral discrepancy information leak in Juniper Netscreen VPNs running ScreenOS 5.2.0 and earlier. When using IKE with pre-shared key authentication, remote attackers can enumerate valid usernames by sending an IKE Aggressive Mode packet: a response is generated for valid u...

Juniper NetScreen 5.0 - VPN Username Enumeration

Juniper NetScreen 5.0 - VPN Username Enumeration source: https://www.securityfocus.com/bid/14595/info The Juniper Netscreen VPN implementation will identify valid usernames in IKE aggressive mode, when pre-shared key authentication is used. This allows for attackers to obtain a list of valid VPN...

Juniper NetScreen 5.0 - VPN 'Username' Enumeration

source: https://www.securityfocus.com/bid/14595/info The Juniper Netscreen VPN implementation will identify valid usernames in IKE aggressive mode, when pre-shared key authentication is used. This allows for attackers to obtain a list of valid VPN users. With a valid username, an attacker can...

CVE-2005-2025

Cisco VPN 3000 Concentrator before 4.1.7.F allows remote attackers to determine valid groupnames by sending an IKE Aggressive Mode packet with the groupname in the ID field, which generates a response if the groupname is valid, but does not generate a response for an invalid groupname...

CVE-2005-2025

Cisco VPN 3000 Concentrator before 4.1.7.F allows remote attackers to determine valid groupnames by sending an IKE Aggressive Mode packet with the groupname in the ID field, which generates a response if the groupname is valid, but does not generate a response for an invalid groupname...

Cisco VPN 3000 groupname enumeration

Different bahaviour for valid and invalid groupname in IKE aggressive mode...

CVE-2002-1623

The CVE-2002-1623 entry concerns the Internet Key Exchange (IKE) protocol: when using Aggressive Mode for shared secret authentication, identities are not encrypted during negotiation. This can allow remote attackers to determine valid usernames by monitoring responses before password entry or by...

CVE-2002-1623

The design of the Internet Key Exchange IKE protocol, when using Aggressive Mode for shared secret authentication, does not encrypt initiator or responder identities during negotiation, which may allow remote attackers to determine valid usernames by 1 monitoring responses before the password is...

CVE-2004-0699

CVE-2004-0699 describes a heap-based buffer overflow in the ASN.1 decoding library used by Check Point VPN-1 products when Aggressive Mode IKE is enabled. The root cause is a vulnerability in ASN.1 decoding that can be triggered by sending a malformed IKE packet after initiating a negotiation, al...

CVE-2002-1623

The design of the Internet Key Exchange IKE protocol, when using Aggressive Mode for shared secret authentication, does not encrypt initiator or responder identities during negotiation, which may allow remote attackers to determine valid usernames by 1 monitoring responses before the password is...

Internet Key Exchange (IKE) protocol discloses identity when Aggressive Mode shared secret authentication is used

Overview The Internet Key Exchange IKE protocol discloses username information when Aggressive Mode is used for shared secret authentication. Description The Internet Key Exchange IKE protocol provides a negotiation mechanism that allows an initiator to establish an encrypted session with a...

Firewall-1 usernames detection

PKI aggressive mode replies are different for existing and non-existing usernames...

IKE - Aggressive Mode Shared Secret Hash Leakage

IKE - Aggressive Mode Shared Secret Hash Leakage source: https://www.securityfocus.com/bid/7423/info When a VPN is configured to use a pre-shared master secret and a client attempts to negotiate keys in aggressive mode, a hash of the secret is transmitted across the network in clear-text. This ma...

IKE - Aggressive Mode Shared Secret Hash Leakage

source: https://www.securityfocus.com/bid/7423/info When a VPN is configured to use a pre-shared master secret and a client attempts to negotiate keys in aggressive mode, a hash of the secret is transmitted across the network in clear-text. This may result in the hash being leaked to eavesdropper...