CVE-2002-1420

OpenBSD 3.1 and earlier are affected by a local privilege escalation due to an integer signedness error in select(2): a negative size value passes the boundary check as signed but is then used as unsigned during a data copy, allowing a local user to overwrite kernel memory. Impact: local code/ker...

CVE-2004-0114

The CVE-2004-0114 issue is a reference-count bug in SHMAT (System V Shared Memory) on FreeBSD/NetBSD/OpenBSD where shmat(2) increments the vm_object reference count and then calls vm_map_find; if vm_map_find fails, the reference count is not decremented. This can allow local attackers to gain rea...

CVE-2004-0257

Technical details about CVE-2004-0257 are not publicly provided in the supplied documents. Available records describe a DoS condition via IPv6 MTU-related packets but do not specify affected products, versions, root cause, or mitigations. Monitor for updates.

CVE-2004-0114

The shmat system call in the System V Shared Memory interface for FreeBSD 5.2 and earlier, NetBSD 1.3 and earlier, and OpenBSD 2.6 and earlier, does not properly decrement a shared memory segment's reference count when the vmmapfind function fails, which could allow local users to gain read or...

CVE-2004-0257

OpenBSD 3.4 and NetBSD 1.6 and 1.6.1 allow remote attackers to cause a denial of service crash by sending an IPv6 packet with a small MTU to a listening port and then issuing a TCP connect to that port...

CVE-2002-1420

Integer signedness error in select on OpenBSD 3.1 and earlier allows local users to overwrite arbitrary kernel memory via a negative value for the size parameter, which satisfies the boundary check as a signed integer, but is later used as an unsigned integer during a data copying operation...

CVE-2002-1420: Undefined Security Weakness

Integer signedness error in select on OpenBSD 3.1 and earlier allows local users to overwrite arbitrary kernel memory via a negative value for the size parameter, which satisfies the boundary check as a signed integer, but is later used as an unsigned integer during a data copying operation...

CVE-2004-0114: Undefined Security Weakness

The shmat system call in the System V Shared Memory interface for FreeBSD 5.2 and earlier, NetBSD 1.3 and earlier, and OpenBSD 2.6 and earlier, does not properly decrement a shared memory segment's reference count when the vmmapfind function fails, which could allow local users to gain read or...

CVE-2004-0257: Undefined Security Weakness

OpenBSD 3.4 and NetBSD 1.6 and 1.6.1 allow remote attackers to cause a denial of service crash by sending an IPv6 packet with a small MTU to a listening port and then issuing a TCP connect to that port...

OpenBSD bridging ICMP DoS

If bridging is used, ICMP echo packet causes system to crash...

Vulnerability: OpenBSD 3.5 Kernel Panic.

Hi, I have posted this vulnerability note to CERT and gotten no response. It is remotely exploitable, but since it requires commands to be executed as root on the gateway machine, it is unlikely to cause any unplanned disruption. OpenBSD was contacted, and they provided a patch within 12 hours...

isakmpd crashes when handling ISAKMP packets with malformed "Delete Payload"

Overview A vulnerability exists in the isakmpd that could allow a remote attacker to cause a denial of service. Description The OpenBSD isakmpd establishes security associations for encrypted and authenticated IPsec network traffic. It implements the Internet Security Association and Key Manageme...

Multiple memory leak vulnerabilities in isakmpd

Overview Multiple memory handling vulnerabilities exist in the isakmpd that could allow a remote attacker to cause a denial of service. Description The OpenBSD isakmpd establishes security associations for encrypted and authenticated IPsec network traffic. It implements the Internet Security...

Integer underflow vulnerability in isakmpd "Certificate Request Payload" handling

Overview A vulnerability exists in the isakmpd that could allow a remote attacker to cause a denial of service. Description The OpenBSD isakmpd establishes security associations for encrypted and authenticated IPsec network traffic. It implements the Internet Security Association and Key Manageme...

isakmpd fails to handle ISAKMP packets with "Payload Length" of zero

Overview A vulnerability exists in the isakmpd that could allow a remote attacker to cause a denial of service. Description The OpenBSD isakmpd establishes security associations for encrypted and authenticated IPsec network traffic. It implements the Internet Security Association and Key Manageme...

CVE-2004-0819

The bridge functionality in OpenBSD 3.4 and 3.5, when running a gateway configured as a bridging firewall with the link2 option for IPSec enabled, allows remote attackers to cause a denial of service crash via an ICMP echo ping packet...

CVE-2004-0482

Multiple integer overflows in 1 procfscmdline.c, 2 procfsfpregs.c, 3 procfslinux.c, 4 procfsregs.c, 5 procfsstatus.c, and 6 procfssubr.c in procfs for OpenBSD 3.5 and earlier allow local users to read sensitive kernel memory and possibly perform other unauthorized activities...

Dr.Web for OpenBSD failure

Small stack size causes daemon fail to start if LocalScan = no configured whth message stack overflow in function int scanMailint, timet , int, int, const char...

unauthorized deletion of IPsec SAs in isakmpd, still

1 Abstract For nearly 10 months a handful of OpenBSD-developers is trying to fix a plethora of payload handling flaws in isakmpd. On 2004/01/13 they released something like a final patch to a broader public. The patch protects against some specific attacks, but does not solve the problem. 2...

OpenBSD 3.x - ISAKMPD Security Association Piggyback Delete Payload Denial of Service

OpenBSD 3.x - ISAKMPD Security Association Piggyback Delete Payload Denial of Service source: https://www.securityfocus.com/bid/10496/info It is reported that OpenBSD's isakmpd daemon is susceptible to a remote denial of service vulnerability. An attacker is able to delete security associations a...