Examples of using Setuid in English and their translations into German
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Setting up setuid check.
One or both of the following bits is set: setgid or setuid.
The/usr/bin/passwd binary is a setuid application which allows users to change their password.
It was found that mod_wsgi doesn't properly drop privileges if the call to setuid() fails.
Typical UNIX setuid and setgid behavior present a known security issue in UNIX.
Terminfo directory as well as in the TERMCAP environment variable for setuid and setgid applications.
Setuid processes, and processes that call setuid, seteuid, or setreuid, also exhibit the same behavior.
Terminfo directory as well as in the TERMCAP environment variable for setuid and setgid applications. patch included.
While the setuid and setgid mechanisms allow an application to control the answer to the question:"Who are you?
A flaw was discovered in theway that the mount and unmount utilities used the setuid and setgid functions.
By default, OpenAFS supports setuid programs within the local cell, which could allow attackers to obtain privileges.
In Red Hat Linux 7.xLPRng fails to drop supplemental group membership at init time, though it does properly setuid and setgid.
On systems where procmail is installed setuid this could be exploited to obtain unauthorized privileges.
Basically, libraries may take some action based upon your environment before yourmain program even gets to check its setuid status.
Work/mnt nfs rw, nodev, nosuid0 0 This way, no devices or setuid programs on the NFS server can subvert security measures on the NFS client.
Setuid- used only for applications, this permission indicates that the application is to run as the owner of the file and not as the user executing the application.
Additionally, a race condition has beendiscovered that allows an attacker to attach via ptrace to a setuid process, allowing him to modify the running process.
An intruder can exploit setuid and setgid behavior by overwriting an executable file with a Trojan horse and then running the executable file.
A local user canexploit this race condition when executing setuid root programs and thereby overwrite any file in the system.
Typically, when the setuid or setgid bit is set on a file, the owner or group of the file is changed to the owner or group ID(GID) where the file will be executed.
To represent special rights, you can prefix a fourth digitto this number according to the same principle, where the setuid, setgid and sticky bits are 4, 2 and 1, respectively.
It's possible to exploit a race condition to create setuid binaries in a directory tree or remove arbitrary files when a process is deleting this tree.
The setuid and setgid mechanisms allow a program, when run, to adopt certain aspects of a security principal other than that of the user running the program.
This can be used to force programs that are normally setuid to be install without a setuid flag, or only executable by a certain group.
The dmcrypt-get-device helper used to check if a given device is an encrypted device handled bydevmapper, and used in eject, doesn't check return values from setuid() and setgid() when dropping privileges.
Instead, if you attempt to run a file with either the setuid or setgid bit set, SUA does not run the file and returns the error code ENOSETUID.
For the setuid(2), setgid(2), and chroot(2) functions, a process must have the effective UID that maps back to the system account, the administrator account for the local domain, or the administrator account for the principal domain.
Some customers may find this security measure problematic because it is different from the typical behavior of UNIX,although the typical behavior of UNIX setuid and setgid is not specified as part of the NFS protocol.
To prevent this known security issue, by default, setuid and setgid are disabled and will not affect the UID or GID settings if the file or directory has both of the following characteristics.
Root users that are using the su command to run as other users,and users that are using setuid processes(and those processes that include setuid-related calls), deviate from the default behavior described above by retaining some directory traverse rights.