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Search Results (634 CVEs found)

CVE Vendors Products Updated CVSS v3.1
CVE-2009-4146 1 Freebsd 1 Freebsd 2026-04-23 N/A
The _rtld function in the Run-Time Link-Editor (rtld) in libexec/rtld-elf/rtld.c in FreeBSD 7.1, 7.2, and 8.0 does not clear the LD_PRELOAD environment variable, which allows local users to gain privileges by executing a setuid or setguid program with a modified LD_PRELOAD variable containing an untrusted search path that points to a Trojan horse library, a different vector than CVE-2009-4147.
CVE-2026-4747 1 Freebsd 1 Freebsd 2026-04-20 8.8 High
Each RPCSEC_GSS data packet is validated by a routine which checks a signature in the packet. This routine copies a portion of the packet into a stack buffer, but fails to ensure that the buffer is sufficiently large, and a malicious client can trigger a stack overflow. Notably, this does not require the client to authenticate itself first. As kgssapi.ko's RPCSEC_GSS implementation is vulnerable, remote code execution in the kernel is possible by an authenticated user that is able to send packets to the kernel's NFS server while kgssapi.ko is loaded into the kernel. In userspace, applications which have librpcgss_sec loaded and run an RPC server are vulnerable to remote code execution from any client able to send it packets. We are not aware of any such applications in the FreeBSD base system.
CVE-2026-3038 1 Freebsd 1 Freebsd 2026-04-16 7.5 High
The rtsock_msg_buffer() function serializes routing information into a buffer. As a part of this, it copies sockaddr structures into a sockaddr_storage structure on the stack. It assumes that the source sockaddr length field had already been validated, but this is not necessarily the case, and it's possible for a malicious userspace program to craft a request which triggers a 127-byte overflow. In practice, this overflow immediately overwrites the canary for the rtsock_msg_buffer() stack frame, resulting in a panic once the function returns. The bug allows an unprivileged user to crash the kernel by triggering a stack buffer overflow in rtsock_msg_buffer(). In particular, the overflow will corrupt a stack canary value that is verified when the function returns; this mitigates the impact of the stack overflow by triggering a kernel panic. Other kernel bugs may exist which allow userspace to find the canary value and thus defeat the mitigation, at which point local privilege escalation may be possible.
CVE-2026-2261 1 Freebsd 1 Freebsd 2026-04-16 7.5 High
Due to a programming error, blocklistd leaks a socket descriptor for each adverse event report it receives. Once a certain number of leaked sockets is reached, blocklistd becomes unable to run the helper script: a child process is forked, but this child dereferences a null pointer and crashes before it is able to exec the helper. At this point, blocklistd still records adverse events but is unable to block new addresses or unblock addresses whose database entries have expired. Once a second, much higher number of leaked sockets is reached, blocklistd becomes unable to receive new adverse event reports. An attacker may take advantage of this by triggering a large number of adverse events from sacrificial IP addresses to effectively disable blocklistd before launching an attack. Even in the absence of attacks or probes by would-be attackers, adverse events will occur regularly in the course of normal operations, and blocklistd will gradually run out file descriptors and become ineffective. The accumulation of open sockets may have knock-on effects on other parts of the system, resulting in a general slowdown until blocklistd is restarted.
CVE-2006-0900 1 Freebsd 1 Freebsd 2026-04-16 N/A
nfsd in FreeBSD 6.0 kernel allows remote attackers to cause a denial of service via a crafted NFS mount request, as demonstrated by the ProtoVer NFS test suite.
CVE-2001-0710 2 Freebsd, Netbsd 2 Freebsd, Netbsd 2026-04-16 N/A
NetBSD 1.5 and earlier and FreeBSD 4.3 and earlier allows a remote attacker to cause a denial of service by sending a large number of IP fragments to the machine, exhausting the mbuf pool.
CVE-2002-1125 1 Freebsd 1 Freebsd 2026-04-16 N/A
FreeBSD port programs that use libkvm for FreeBSD 4.6.2-RELEASE and earlier, including (1) asmon, (2) ascpu, (3) bubblemon, (4) wmmon, and (5) wmnet2, leave open file descriptors for /dev/mem and /dev/kmem, which allows local users to read kernel memory.
CVE-2004-0618 1 Freebsd 1 Freebsd 2026-04-16 N/A
FreeBSD 5.1 for the Alpha processor allows local users to cause a denial of service (crash) via an execve system call with an unaligned memory address as an argument.
CVE-2006-0883 2 Freebsd, Openbsd 2 Freebsd, Openssh 2026-04-16 N/A
OpenSSH on FreeBSD 5.3 and 5.4, when used with OpenPAM, does not properly handle when a forked child process terminates during PAM authentication, which allows remote attackers to cause a denial of service (client connection refusal) by connecting multiple times to the SSH server, waiting for the password prompt, then disconnecting.
CVE-1999-0345 4 Freebsd, Ibm, Sco and 1 more 7 Freebsd, Aix, Sng and 4 more 2026-04-16 N/A
Jolt ICMP attack causes a denial of service in Windows 95 and Windows NT systems.
CVE-2002-0824 1 Freebsd 1 Point-to-point Protocol Daemon 2026-04-16 N/A
BSD pppd allows local users to change the permissions of arbitrary files via a symlink attack on a file that is specified as a tty device.
CVE-2000-0375 1 Freebsd 1 Freebsd 2026-04-16 N/A
The kernel in FreeBSD 3.2 follows symbolic links when it creates core dump files, which allows local attackers to modify arbitrary files.
CVE-2001-0093 1 Freebsd 1 Freebsd 2026-04-16 N/A
Vulnerability in telnetd in FreeBSD 1.5 allows local users to gain root privileges by modifying critical environmental variables that affect the behavior of telnetd.
CVE-2006-0381 1 Freebsd 1 Freebsd 2026-04-16 N/A
A logic error in the IP fragment cache functionality in pf in FreeBSD 5.3, 5.4, and 6.0, and OpenBSD, when a 'scrub fragment crop' or 'scrub fragment drop-ovl' rule is being used, allows remote attackers to cause a denial of service (crash) via crafted packets that cause a packet fragment to be inserted twice.
CVE-1999-0322 1 Freebsd 1 Freebsd 2026-04-16 N/A
The open() function in FreeBSD allows local attackers to write to arbitrary files.
CVE-1999-0513 7 Digital, Freebsd, Hp and 4 more 8 Unix, Freebsd, Hp-ux and 5 more 2026-04-16 N/A
ICMP messages to broadcast addresses are allowed, allowing for a Smurf attack that can cause a denial of service.
CVE-2001-0063 1 Freebsd 1 Freebsd 2026-04-16 N/A
procfs in FreeBSD and possibly other operating systems allows local users to bypass access control restrictions for a jail environment and gain additional privileges.
CVE-2006-0054 1 Freebsd 1 Freebsd 2026-04-16 5.3 Medium
The ipfw firewall in FreeBSD 6.0-RELEASE allows remote attackers to cause a denial of service (firewall crash) via ICMP IP fragments that match a reset, reject or unreach action, which leads to an access of an uninitialized pointer.
CVE-2001-0062 1 Freebsd 1 Freebsd 2026-04-16 N/A
procfs in FreeBSD and possibly other operating systems allows local users to cause a denial of service by calling mmap on the process' own mem file, which causes the kernel to hang.
CVE-2002-0973 1 Freebsd 1 Freebsd 2026-04-16 N/A
Integer signedness error in several system calls for FreeBSD 4.6.1 RELEASE-p10 and earlier may allow attackers to access sensitive kernel memory via large negative values to the (1) accept, (2) getsockname, and (3) getpeername system calls, and the (4) vesa FBIO_GETPALETTE ioctl.