Memory corruption

Memory leak in the virtual private dial-up network VPDN component in Cisco IOS before 12.3 allows remote attackers to cause a denial of service memory consumption via a series of PPTP sessions, related to "dead memory" that remains allocated after process termination, aka bug ID CSCsj58566...

CVE-2008-1150

The virtual private dial-up network VPDN component in Cisco IOS before 12.3 allows remote attackers to cause a denial of service resource exhaustion via a series of PPTP sessions, related to the persistence of interface descriptor block IDB data structures after process termination, aka bug ID...

CVE-2008-1151

Memory leak in the virtual private dial-up network VPDN component in Cisco IOS before 12.3 allows remote attackers to cause a denial of service memory consumption via a series of PPTP sessions, related to "dead memory" that remains allocated after process termination, aka bug ID CSCsj58566...

CVE-2008-1151

CVE-2008-1151 describes a memory leak in the Cisco IOS VPDN PPTP handling prior to 12.3, where terminating PPTP sessions leaks memory and may exhaust interface descriptors (IDBs), causing DoS-like behavior. The issue is tied to bug CSCsj58566 and is observable when PPTP is used with VPDN on affec...

CVE-2008-1150

CVE-2008-1150 affects Cisco IOS prior to 12.3 and is caused by PPTP handling in VPDN: two vulnerabilities lead to denial of service through (1) a memory leak after PPTP session termination and (2) exhaustion of interface descriptor blocks (IDBs) because virtual access interfaces are not reused. T...

Ubuntu 6.06 LTS : pptpd vulnerabilities (USN-459-2)

USN-459-1 fixed vulnerabilities in pptpd. However, a portion of the fix caused a regression in session establishment under Dapper for certain PPTP clients. This update fixes the problem. We apologize for the inconvenience. A flaw was discovered in the PPTP tunnel server. Remote attackers could se...

USN-459-2: pptpd regression

USN-459-1 fixed vulnerabilities in pptpd. However, a portion of the fix caused a regression in session establishment under Dapper for certain PPTP clients. This update fixes the problem. We apologize for the inconvenience. Original advisory details: A flaw was discovered in the PPTP tunnel server...

USN-459-1: pptpd vulnerability

A flaw was discovered in the PPTP tunnel server. Remote attackers could send a specially crafted packet and disrupt established PPTP tunnels, leading to a denial of service...

CVE-2007-0244

pptpgre.c in PoPToP Point to Point Tunneling Server pptpd before 1.3.4 allows remote attackers to cause a denial of service PPTP connection tear-down via 1 GRE packets with out-of-order sequence numbers or 2 certain GRE packets that are processed using a wrong pointer and improperly dequeued...

CVE-2007-0244

pptpgre.c in PoPToP Point to Point Tunneling Server pptpd before 1.3.4 allows remote attackers to cause a denial of service PPTP connection tear-down via 1 GRE packets with out-of-order sequence numbers or 2 certain GRE packets that are processed using a wrong pointer and improperly dequeued...

Code injection

pptpgre.c in PoPToP Point to Point Tunneling Server pptpd before 1.3.4 allows remote attackers to cause a denial of service PPTP connection tear-down via 1 GRE packets with out-of-order sequence numbers or 2 certain GRE packets that are processed using a wrong pointer and improperly dequeued...

CVE-2007-0244

pptpgre.c in PoPToP Point to Point Tunneling Server pptpd before 1.3.4 allows remote attackers to cause a denial of service PPTP connection tear-down via 1 GRE packets with out-of-order sequence numbers or 2 certain GRE packets that are processed using a wrong pointer and improperly dequeued...

CVE-2007-0244

pptpgre.c in PoPToP Point to Point Tunneling Server pptpd before 1.3.4 allows remote attackers to cause a denial of service PPTP connection tear-down via 1 GRE packets with out-of-order sequence numbers or 2 certain GRE packets that are processed using a wrong pointer and improperly dequeued...

CVE-2007-0244

pptpgre.c in PoPToP Point to Point Tunneling Server pptpd before 1.3.4 allows remote attackers to cause a denial of service PPTP connection tear-down via 1 GRE packets with out-of-order sequence numbers or 2 certain GRE packets that are processed using a wrong pointer and improperly dequeued...

PoPToP pptpd DoS

Invalid PPTP packet causes connection tear-down...

Cisco VPN Server Detection (PPTP)

Binary data 3912.prm...

Poptop Negative Read Overflow

This is an exploit for the Poptop negative read overflow. This will work against versions prior to 1.1.3-b3 and 1.1.3-20030409, but I currently do not have a good way to detect Poptop versions. The server will by default only allow 4 concurrent manager processes what we run our code in, so you...

Memory corruption

ipnatpptp in the PPTP NAT helper netfilter/ipnathelperpptp.c in Linux kernel 2.6.14, and other versions, allows local users to cause a denial of service memory corruption or crash via a crafted outbound packet that causes an incorrect offset to be calculated from pointer arithmetic when non-linea...

CVE-2006-0037

ipnatpptp in the PPTP NAT helper netfilter/ipnathelperpptp.c in Linux kernel 2.6.14, and other versions, allows local users to cause a denial of service memory corruption or crash via a crafted outbound packet that causes an incorrect offset to be calculated from pointer arithmetic when non-linea...

CVE-2006-0036

ipnatpptp in the PPTP NAT helper netfilter/ipnathelperpptp.c in Linux kernel 2.6.14, and other versions, allows remote attackers to cause a denial of service memory corruption or crash via an inbound PPTPINCALLREQUEST packet that causes a null pointer to be used in an offset calculation...