"SGID" redirects here. For the company which briefly used this stock ticker symbol, see Silicon Graphics.
The Unix and Linux access rights flags setuid and setgid (short for set user identity and set group identity)[1] allow users to run an executable with the file system permissions of the executable's owner or group respectively and to change behaviour in directories. They are often used to allow users on a computer system to run programs with temporarily elevated privileges to perform a specific task. While the assumed user id or group id privileges provided are not always elevated, at a minimum they are specific.
The flags setuid and setgid are needed for tasks that require different privileges than what the user is normally granted, such as the ability to alter system files or databases to change their login password.[2] Some of the tasks that require additional privileges may not immediately be obvious, though, such as the ping command, which must send and listen for control packets on a network interface.
^von Hagen, William (2010-05-13). Ubuntu Linux Bible. pp. 3–59. ISBN 9780470881804.
^Frisch, Æleen (2009-02-09). Essential system administration. O'Reilly. p. 351. ISBN 9780596550493.
The Unix and Linux access rights flags setuid and setgid (short for set user identity and set group identity) allow users to run an executable with the...
call used to change the access permissions and the special mode flags (the setuid, setgid, and sticky flags) of file system objects (files and directories)...
permissions and—the instant they are no longer necessary—dismisses them via setuid() with a non-zero argument as demonstrated in the Version 6 Unix source...
animals such as pigs SUID, sudden and unexpected infant death In computing: setuid, a privilege elevation mechanism Saved user ID, a type of user identifier...
using its octal mode 1000 or by its symbol t (s is already used by the setuid bit). For example, to add the bit on the directory /usr/local/tmp, one would...
2006-05-27. http://fedoraproject.org/wiki/Features/RemoveSETUID – Fedora 15 set to remove SETUID in favor of (Linux kernel) capabilities P. A. Loscocco...
reason, libc unsets these environment variables at startup in a setuid process. setuid programs usually unset unknown environment variables and check others...
system call basis, helping to eliminate the need for potentially dangerous setuid programs. It also includes interactive and automatic policy generation features...
its own authority independent of that of the client of the web browser. Setuid executables in Unix Ambient authority Wu, Jianliang; Cui, Tingting; Ban...
can perform a chroot. This is intended to prevent users from putting a setuid program inside a specially crafted chroot jail (for example, with a fake...
of Unix (4.1BSD and early versions of System V), this command had to be setuid root as the kernel did not have an mkdir syscall. Instead, it made the directory...
Process identifier Security Identifier (SID) – the Windows NT equivalent setuid Sticky bit chmod(1) – Solaris 11.4 User Commands Reference Manual Kerrisk...
This library overrides the bind() call with a version that executes a setuid helper program (/usr/lib/authbind/helper) with the socket as file descriptor...
GID) and a saved (SUID, SGID) ID. Normally these are identical, but in setuid and setgid processes they are different. Originally, a signed 16-bit integer...
a real user ID/group ID from the effective user ID/group ID, using the setuid(2)/setgid(2) and related system calls, which were specified by POSIX. If...
File-system permissions §Traditional Unix permissions for more details) plus the setuid and setgid bit flags and a 'sticky' bit flag. The mode also specifies the...
in the environment variable LD_LIBRARY_PATH, unless the executable is a setuid/setgid binary, in which case it is ignored. LD_LIBRARY_PATH can be overridden...
are logged into the video console). Application authors resorted to using setuid binaries or run service daemons to provide their own access control and...
RageAgainstTheCage exploit. The adb daemon did not check for the return value of the setuid system call when dropping privileges. The exploit forks processes until...
mounted with different parameters, e.g., read-only, or with the execution of setuid files disabled. A runaway program that uses up all available space on a...
ground speed hw.sensors. Xenocara: Xorg (X Window Server) is no longer setuid. Old version, no longer maintained: 6.6 17 October 2019 18 October 2020...
to root permissions by exploiting shell injection vulnerabilities in a setuid root binary on UNIX, or Local System by exploiting a service on Microsoft...
be overridden with an environment variable, although it is disabled for setuid and setgid programs, so that a user can't force such a program to run arbitrary...
process credentials based on program file rather than interpreter file (see setuid); implies O flag. F to make the kernel open the binary at configuration...
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