CVE-2002-2188

OpenBSD before 3.2 allows local users to cause a denial of service kernel crash via a call to getrlimit2 with invalid arguments, possibly due to an integer signedness error...

CVE-2002-2180

The setitimer2 system call in OpenBSD 2.0 through 3.1 does not properly check certain arguments, which allows local users to write to kernel memory and possibly gain root privileges, possibly via an integer signedness error...

CVE-2009-3572

OpenBSD 4.4, 4.5, and 4.6, when running on an i386 kernel, does not properly handle XMM exceptions, which allows local users to cause a denial of service kernel panic via unspecified vectors...

CVE-2004-2338

OpenBSD 3.3 and 3.4 does not properly parse Accept and Deny rules without netmasks on big-endian 64-bit platforms such as SPARC64, which may allow remote attackers to bypass access restrictions...

CVE-2025-30334

In OpenBSD 7.6 before errata 006 and OpenBSD 7.5 before errata 015, traffic sent over wg4 could result in kernel crash...

CVE-2025-30334 OpenBSD wg(4) kernel crash

In OpenBSD 7.6 before errata 006 and OpenBSD 7.5 before errata 015, traffic sent over wg4 could result in kernel crash...

CVE-2024-11148

In OpenBSD 7.4 before errata 006 and OpenBSD 7.3 before errata 020, httpd8 is vulnerable to a NULL dereference when handling a malformed fastcgi request...

CVE-2024-10933

In OpenBSD 7.5 before errata 009 and OpenBSD 7.4 before errata 022, exclude any '/' in readdir name validation to avoid unexpected directory traversal on untrusted file systems...

CVE-2024-10933 OpenBSD readdir directory traversal

In OpenBSD 7.5 before errata 009 and OpenBSD 7.4 before errata 022, exclude any '/' in readdir name validation to avoid unexpected directory traversal on untrusted file systems...

CVE-2024-11148 OpenBSD httpd(8) null dereference

In OpenBSD 7.4 before errata 006 and OpenBSD 7.3 before errata 020, httpd8 is vulnerable to a NULL dereference when handling a malformed fastcgi request...

OpenBSD 安全漏洞

OpenBSD is a cross-platform, BSD-based UNIX-like operating system from the Canadian OpenBSD organization. A security vulnerability exists in OpenBSD versions prior to OpenBSD 7.5 errata 009 and OpenBSD versions prior to OpenBSD 7.4 errata 022, which stems from improper validation of the readdir...

The vulnerability in the implementation of the NFS network file system server for FreeBSD and OpenBSD allows a hacker to execute arbitrary code with root privileges.

The vulnerability of the NFS network file system server implementation for FreeBSD and OpenBSD is related to errors in processing input data. Exploiting this vulnerability allows a remote attacker to execute arbitrary code with root privileges...

PT-2023-21210 · Openbsd · Openbsd

Name of the Vulnerable Software and Affected Versions: OpenBSD version 7.2 Description: A TCP packet with destination port 0 that matches a pf divert-to rule can crash the kernel. Recommendations: For OpenBSD version 7.2, as a temporary workaround, consider disabling the pf divert-to rule until a...

CVE-2023-27567

In OpenBSD 7.2, a TCP packet with destination port 0 that matches a pf divert-to rule can crash the kernel...

OpenBSD Input Validation Error Vulnerability

OpenBSD is a cross-platform, BSD-based UNIX-like operating system from the Canadian OpenBSD Openbsd project team. A security vulnerability exists in OpenBSD version 6.6. An attacker can inject arbitrary network packets independent of the network configuration...

Critical OpenSMTPD Bug Opens Linux and OpenBSD Mail Servers to Hackers

Cybersecurity researchers have discovered a new critical vulnerability CVE-2020-7247 in the OpenSMTPD email server that could allow remote attackers to take complete control over BSD and many Linux based servers. OpenSMTPD is an open-source implementation of the server-side SMTP protocol that was...

The vulnerability of the OpenBSD operating system, which allows a hacker to execute arbitrary code

The vulnerability of the amapalloc function in the OpenBSD operating system is related to errors in number processing. Exploiting this vulnerability allows a local attacker to execute arbitrary code with kernel privileges, using a value of a very large size...

OpenBSD 3.3 Semget() Integer Overflow Vulnerability (1)

No description provided by source. source: http://www.securityfocus.com/bid/8464/info A vulnerability has been discovered in the OpenBSD semget system call. The problem occurs due to insufficient sanity checks before allocating memory using the user-supplied nsems value as an argument. As a resul...

dhcpd stack-based buffer overlow

Stack-based buffer overflow in the consoptions function in options.c in dhcpd in OpenBSD 4.0 through 4.2, and some other dhcpd implementations based on ISC dhcp-2, allows remote attackers to execute arbitrary code or cause a denial of service daemon crash via a DHCP request specifying a maximum...

OpenBSD 3.x4.x - ICMPv6 Packet Handling Remote Buffer Overflow

OpenBSD 3.x4.x - ICMPv6 Packet Handling Remote Buffer Overflow source: https://www.securityfocus.com/bid/22901/info OpenBSD is prone to a remote buffer-overflow vulnerability because the software fails to bounds-check user-supplied data before copying it into an insufficiently sized buffer. A...