Check Point FireWall-1 4.0 and 4.1 before SP5 allows remote attackers to obtain the IP addresses of internal interfaces via certain SecuRemote requests to TCP ports 256 or 264, which leaks the IP addresses in a reply packet.
Check Point FireWall-1 4.1 and Next Generation (NG), with UserAuth configured to proxy HTTP traffic only, allows remote attackers to pass unauthorized HTTPS, FTP and possibly other traffic through the firewall.
Check Point Firewall-1 allows remote attackers to cause a denial of service by sending a large number of malformed fragmented IP packets.
Firewall-1 3.0 and 4.0 leaks packets with private IP address information, which could allow remote attackers to determine the real IP address of the host that is making the connection.
Check Point Firewall-1 allows remote attackers to bypass port access restrictions on an FTP server by forcing it to send malicious packets that Firewall-1 misinterprets as a valid 227 response to a client's PASV attempt.
Firewall-1 does not properly filter script tags, which allows remote attackers to bypass the "Strip Script Tags" restriction by including an extra < in front of the SCRIPT tag.
Check Point Firewall-1 does not properly handle certain restricted keywords (e.g., Mail, auth, time) in user-defined objects, which could produce a rule with a default "ANY" address and result in access to more systems than intended by the administrator.
Firewall-1 does not properly restrict access to LDAP attributes.
Firewall-1 sets a long timeout for connections that begin with ACK or other packets except SYN, allowing an attacker to conduct a denial of service via a large number of connection attempts to unresponsive systems.
Check Point FireWall-1 can be subjected to a denial of service via UDP packets that are sent through VPN-1 to port 0 of a host.
The dochangecipherspec function in OpenSSL 0.9.6c to 0.9.6k, and 0.9.7a to 0.9.7c, allows remote attackers to cause a denial of service (crash) via a crafted SSL/TLS handshake that triggers a null dereference.
Check Point FireWall-1 allows remote attackers to cause a denial of service (high CPU) via a flood of packets to port 264.
The client authentication interface for Check Point Firewall-1 4.0 and earlier generates different error messages for invalid usernames versus invalid passwords, which allows remote attackers to identify valid usernames on the firewall.
Check Point Firewall-1 session agent 3.0 through 4.1 generates different error messages for invalid user names versus invalid passwords, which allows remote attackers to determine valid usernames and guess a password via a brute force attack.
Check Point VPN-1/FireWall-1 4.1 and earlier allows remote attackers to bypass the directionality check via fragmented TCP connection requests or reopening closed TCP connection requests, aka "One-way Connection Enforcement Bypass."
Check Point VPN-1/FireWall-1 4.1 and earlier allows remote attackers to redirect FTP connections to other servers ("FTP Bounce") via invalid FTP commands that are processed improperly by FireWall-1, aka "FTP Connection Enforcement Bypass."
The seed generation mechanism in the inter-module S/Key authentication mechanism in Check Point VPN-1/FireWall-1 4.1 and earlier allows remote attackers to bypass authentication via a brute force attack, aka "One-time (s/key) Password Authentication."
The inter-module authentication mechanism (fwa1) in Check Point VPN-1/FireWall-1 4.1 and earlier may allow remote attackers to conduct a denial of service, aka "Inter-module Communications Bypass."
Checkpoint Firewall-1 with the RSH/REXEC setting enabled allows remote attackers to bypass access restrictions and connect to a RSH/REXEC client via malformed connection requests.
Buffer overflow in Getkey in the protocol checker in the inter-module communication mechanism in Check Point VPN-1/FireWall-1 4.1 and earlier allows remote attackers to cause a denial of service.
Check Point VPN-1/FireWall-1 4.1 and earlier improperly retransmits encapsulated FWS packets, even if they do not come from a valid FWZ client, aka "Retransmission of Encapsulated Packets."
The OPSEC communications authentication mechanism (fwn1) in Check Point VPN-1/FireWall-1 4.1 and earlier allows remote attackers to spoof connections, aka the "OPSEC Authentication Vulnerability."
Check Point FireWall-1 4.0 and 4.1 allows remote attackers to cause a denial of service by sending a stream of invalid commands (such as binary zeros) to the SMTP Security Server proxy.
Nokia Firewall Appliances running IPSO 3.3 and VPN-1/FireWall-1 4.1 Service Pack 3, IPSO 3.4 and VPN-1/FireWall-1 4.1 Service Pack 4, and IPSO 3.4 or IPSO 3.4.1 and VPN-1/FireWall-1 4.1 Service Pack 5, when SYN Defender is configured in Active Gateway mode, does not properly rewrite the third packet of a TCP three-way handshake to use the NAT IP address, which allows remote attackers to gain sensitive information.
The default configuration of SecuRemote for Check Point Firewall-1 allows remote attackers to obtain sensitive configuration information for the protected network without authentication.
Format string vulnerability in Check Point VPN-1/FireWall-1 4.1 allows a remote authenticated firewall administrator to execute arbitrary code via format strings in the control connection.
Check Point Firewall-1 3.0b through 4.0 SP1 follows symlinks and creates a world-writable temporary .cpp file when compiling Policy rules, which could allow local users to gain privileges or modify the firewall policy.
The Log Viewer function in the Check Point FireWall-1 GUI for Solaris 3.0b through 4.1 SP2 does not check for the existence of '.log' files when saving files, which allows (1) remote authenticated users to overwrite arbitrary files ending in '.log', or (2) local users to overwrite arbitrary files via a symlink attack.
Check Point VPN-1/FireWall-1 4.1 base.def contains a default macro, acceptfw1rdp, which can allow remote attackers to bypass intended restrictions with forged RDP (internal protocol) headers to UDP port 259 of arbitrary hosts.
Check Point FireWall-1 3.0b through 4.1 for Solaris allows local users to overwrite arbitrary files via a symlink attack on temporary policy files that end in a .cpp extension, which are set world-writable.