CVE-2001-1431
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.
Published:Oct 8, 2001
Last Modified:Apr 16, 2026
EPS:Mar 24, 2005
EPSS Score:0.00753
CVSS Score:5
Affected Products
Vendor
Product
Action
Vendor
Checkpoint
Product
Firewall-1
Checkpoint
Firewall-1
Vendor
Checkpoint
Product
Vpn-1
Checkpoint
Vpn-1
Vendor
Nokia
Product
Firewall Appliance
Nokia
Firewall Appliance
Exploits
No exploit reference
Common Weakness Enumeration
No CWE recorded yet
Common Attack Pattern Enumeration and Classification (CAPEC)
No CAPEC recorded yet
Related CVEs
Common Vulnerability Scoring System
Attack Vector
Network
Adjacent
Local
Physical
Privileges Required
None
Low
High
User Interaction
None
Required
Scope
Unchanged
Changed
Confidentiality
None
Low
High
Integrity
None
Low
High
Availability
None
Low
High
