CVE-2002-0766

OpenBSD 2.9 through 3.1 allows local users to cause a denial of service resource exhaustion and gain root privileges by filling the kernel's file descriptor table and closing file descriptors 0, 1, or 2 before executing a privileged process, which is not properly handled when OpenBSD fails to ope...

CVE-2002-0820

FreeBSD kernel 4.6 and earlier closes the file descriptors 0, 1, and 2 after they have already been assigned to /dev/null when the descriptors reference procfs or linprocfs, which could allow local users to reuse the file descriptors in a setuid or setgid program to modify critical data and gain...

perl getpwuid problem

Getpwuid call doesn't clode /etc/shadow, it leaves the possibility to access file descriptor after privelege are dropped...

CVE-2002-0767

simpleinit on Linux systems does not close a read/write FIFO file descriptor before creating a child process, which allows the child process to cause simpleinit to execute arbitrary programs with root privileges...

CVE-2002-0767

The CVE-2002-0767 issue affects Linux systems running the simpleinit component. The root cause is that simpleinit does not close a read/write FIFO file descriptor before forking a child process. Consequently, the child process can cause simpleinit to execute arbitrary programs with root privilege...

Linux Kernel 2.4.182.4.19 - Privileged File Descriptor Resource Exhaustion (Denial of Service)

Linux Kernel 2.4.182.4.19 - Privileged File Descriptor Resource Exhaustion Denial of Service / source: https://www.securityfocus.com/bid/5178/info The Linux kernel is a freely available, open source kernel originally written by Linus Torvalds. It is the core of all Linux distributions. Recent...

Linux Kernel 2.4.18/2.4.19 - Privileged File Descriptor Resource Exhaustion (Denial of Service)

/ source: https://www.securityfocus.com/bid/5178/info The Linux kernel is a freely available, open source kernel originally written by Linus Torvalds. It is the core of all Linux distributions. Recent versions of the Linux kernel include a collection of file descriptors which are reserved for usa...

simpleinit root exploit - file descriptor left open

Background ---------- Simpleinit is an init program for Linux systems. It is included in the util-linux distribution. More information about simpleinit is available at http://www.atnf.csiro.au/people/rgooch/linux/boot-scripts/. Problem ------- Simpleinit leaves a file descriptor open in some chil...

Privelege escalation via simpleinit

File descriptor doesn't closed after priveleges are dropped...

Richard Gooch SimpleInit 2.0.2 - Open File Descriptor

// source: https://www.securityfocus.com/bid/5001/info A vulnerability has been reported for simpleinit that may allow users to execute arbitrary commands as the superuser. The vulnerability occurs because simpleinit may allow some child processes to inherit a file descriptor with read-write...

Richard Gooch SimpleInit 2.0.2 - Open File Descriptor

Richard Gooch SimpleInit 2.0.2 - Open File Descriptor // source: https://www.securityfocus.com/bid/5001/info A vulnerability has been reported for simpleinit that may allow users to execute arbitrary commands as the superuser. The vulnerability occurs because simpleinit may allow some child...

CVE-2002-0572

FreeBSD 4.5 and earlier, and possibly other BSD-based operating systems, allows local users to write to or read from restricted files by closing the file descriptors 0 standard input, 1 standard output, or 2 standard error, which may then be reused by a called setuid process that intended to...

OpenBSD kernel fails to properly check closed file descriptors "0-2" when running setuid program

Overview The OpenBSD kernel does not adequately check file descriptors 0-2 prior to execing setuid binaries. Other OS kernels may be vulnerable as well. Description The OpenBSD kernel does not adequately check file descriptors 0-2 prior to execing setuid binaries. As a result, an attacker may be...

OpenBSD local DoS and root exploit

The following is research material from FozZy from Hackademy and Hackerz Voice newspaper http://www.hackerzvoice.org, and can be distributed modified or not if proper credits are given to them. For educational purposes only, no warranty of any kind, I may be wrong, this post could kill you mail...

Apple Mac OSX 10.x / FreeBSD 4.x / OpenBSD 2.x / Solaris 2.5/2.6/7.0/8 - 'exec C Library' Standard I/O File Descriptor Closure

/ source: https://www.securityfocus.com/bid/4568/info It has been reported that BSD-based kernels do not check to ensure that the C library standard I/O file descriptors 0-2 are valid open files before execing setuid images. Consequently, I/O that are opened by a setuid process may be assigned fi...

Security Advisory FreeBSD-SA-02:23.stdio

-----BEGIN PGP SIGNED MESSAGE----- ============================================================================= FreeBSD-SA-02:23.stdio Security Advisory The FreeBSD Project Topic: insecure handling of stdio file descriptors Category: core Module: kernel Announced: 2002-04-22 Credits: Joost Pol...

CVE-2001-1047

Race condition in OpenBSD VFS allows local users to cause a denial of service kernel panic by 1 creating a pipe in one thread and causing another thread to set one of the file descriptors to NULL via a close, or 2 calling dup2 on a file descriptor in one process, then setting the descriptor to NU...

Locally exploitable races in OpenBSD VFS

my apologies if it ends up submitted twice Let's start with the trivial: good old aliasing bugs. Example 1: dup2 vs. close. Relevant file: kern/kerndescrip.c sysdup2p, v, retval struct proc p; void v; registert retval; snip if uintold = fdp-fdnfiles || fdp-fdofilesold == NULL || uintnew =...

CVE-2001-1047

Race condition in OpenBSD VFS allows local users to cause a denial of service kernel panic by 1 creating a pipe in one thread and causing another thread to set one of the file descriptors to NULL via a close, or 2 calling dup2 on a file descriptor in one process, then setting the descriptor to NU...

CVE-2000-1040

CVE-2000-1040 concerns a format string vulnerability in the logging function of ypbind 3.3 when run in debug mode. The flaw can leak file descriptors and allow a denial of service. Some sources (Mandrake MDKSA-2000:064) also mention a related buffer overflow in ypserv if the build system lacks vs...