Searching syn software vulnerabilities

Some filters or firewalls allow fragmented SYN

implemented | fragmented | firewalls | violation | reserved | packets | filters | policy | their | allow | Some | bits | SYN |

Some filters or firewalls allow fragmented SYN packets with IP reserved bits in violation of their implemented policy.


An attacker can identify a CISCO device by send

identify | attacker | sending | packet | device | CISCO | port | can | SYN |

An attacker can identify a CISCO device by sending a SYN packet to port 1999, which is for the Cisco Discovery Protocol (CDP).


FORE PowerHub before 5.0.1 allows remote attack

PowerHub | before | FORE |

FORE PowerHub before 5.0.1 allows remote attackers to cause a denial of service (hang) via a TCP SYN scan with TCP/IP OS fingerprinting, e.g. via nmap.


ISS RealSecure 3.2.1 and 3.2.2 allows remote at

RealSecure | ISS |

ISS RealSecure 3.2.1 and 3.2.2 allows remote attackers to cause a denial of service via a flood of fragmented packets with the SYN flag set.


Marconi ASX-1000 ASX switches allow remote atta

attributes | interfaces | management | attackers | malformed | Fragments | ASX-1000 | switches | service | Marconi | SYN-FIN | packet | remote | denial | telnet | allow | cause | More | ASX | set | via | web |

Marconi ASX-1000 ASX switches allow remote attackers to cause a denial of service in the telnet and web management interfaces via a malformed packet with the SYN-FIN and More Fragments attributes set.


Windows XP with port 445 open allows remote att

Windows | port |

Windows XP with port 445 open allows remote attackers to cause a denial of service (CPU consumption) via a flood of TCP SYN packets containing possibly malformed data.


The SYN cache (syncache) and SYN cookie (syncoo

cache | SYN |

The SYN cache (syncache) and SYN cookie (syncookie) mechanism in FreeBSD 4.5 and earlier allows remote attackers to cause a denial of service (crash) (1) via a SYN packet that is accepted using syncookies that causes a null pointer to be referenced for the socket's TCP options, or (2) by killing and restarting a process that listens on the same socket, which does not properly clear the old inpcb pointer on restart.


ZyXEL Prestige 642R allows remote attackers to

attackers | Prestige | services | service | denial | Telnet | allows | remote | ZyXEL | cause | DHCP | 642R | FTP |

ZyXEL Prestige 642R allows remote attackers to cause a denial of service in the Telnet, FTP, and DHCP services (crash) via a TCP packet with both the SYN and ACK flags set.


Kerio MailServer 5.0 allows remote attackers to

MailServer | attackers | service | denial | allows | remote | Kerio | cause |

Kerio MailServer 5.0 allows remote attackers to cause a denial of service (hang) via SYN packets to the supported network services.


Symantec Norton Personal Firewall 2002 allows r

Personal | Firewall | Symantec | Norton |

Symantec Norton Personal Firewall 2002 allows remote attackers to bypass the portscan protection by using a (1) SYN/FIN, (2) SYN/FIN/URG, (3) SYN/FIN/PUSH, or (4) SYN/FIN/URG/PUSH scan.


ZoneAlarm Pro 3.0 and 3.1, when configured to b

configured | attackers | ZoneAlarm | traffic | service | remote | allows | denial | cause | block | Pro | all |

ZoneAlarm Pro 3.0 and 3.1, when configured to block all traffic, allows remote attackers to cause a denial of service (CPU and memory consumption) via a large number of SYN packets (SYN flood). NOTE: the vendor was not able to reproduce the issue.


Tiny Personal Firewall 3.0 through 3.0.6 allows

Firewall | Personal | through | Tiny |

Tiny Personal Firewall 3.0 through 3.0.6 allows remote attackers to cause a denial of service (crash) by via SYN, UDP, ICMP and TCP portscans when the administrator selects the Log tab of the Personal Firewall Agent module.


Motorola Surfboard 4200 cable modem allows remo

Surfboard | Motorola |

Motorola Surfboard 4200 cable modem allows remote attackers to cause a denial of service (crash) by performing a SYN scan using a tool such as nmap.


Kerio Personal Firewall (KPF) 2.1.4 and earlier

Firewall | Personal | Kerio |

Kerio Personal Firewall (KPF) 2.1.4 and earlier allows remote attackers to cause a denial of service (hang and CPU consumption) via a SYN packet flood.


Cisco CSS 11000 routers on the CS800 chassis al

Cisco | CSS |

Cisco CSS 11000 routers on the CS800 chassis allow remote attackers to cause a denial of service (CPU consumption or reboot) via a large number of TCP SYN packets to the circuit IP address, aka "ONDM Ping failure."


Efficient Networks 5861 DSL router, when runnin

Efficient | Networks |

Efficient Networks 5861 DSL router, when running firmware 5.3.80 configured to block incoming TCP SYN, packets allows remote attackers to cause a denial of service (crash) via a flood of TCP SYN packets to the WAN interface using a port scanner such as nmap.


Honeyd before 0.8 replies to TCP packets with t

simulated | addresses | attackers | identify | packets | replies | allows | remote | Honeyd | before | being | flags | which | SYN | TCP | set | RST |

Honeyd before 0.8 replies to TCP packets with the SYN and RST flags set, which allows remote attackers to identify IP addresses that are being simulated by Honeyd.


The firewall in Astaro Security Linux before 4.

Security | firewall | before | Astaro | Linux |

The firewall in Astaro Security Linux before 4.024 sends responses to SYN-FIN packets, which makes it easier for remote attackers to obtain information about the system and construct specialized attacks.


FreeBSD 4.x through 4.11 and 5.x through 5.4 al

through | FreeBSD |

FreeBSD 4.x through 4.11 and 5.x through 5.4 allows remote attackers to modify certain TCP options via a TCP packet with the SYN flag set for an already established session.


The Cisco IP Phone 7940 allows remote attackers

Phone | Cisco |

The Cisco IP Phone 7940 allows remote attackers to cause a denial of service (reboot) via a large amount of TCP SYN packets (syn flood) to arbitrary ports, as demonstrated to port 80.


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