05-04-2011
suid with execute set for passwd
Hello All,
We could see that suid with execute is set for passwd:
-rwsr-xr-x 1 root root 22960 Jul 17 2006 /usr/bin/passwd
that means if any user execute command passwd that will be executed with root priviledge then why a normal user was not able to change other user password
any immediate reply is appriciated.
10 More Discussions You Might Find Interesting
1. UNIX for Advanced & Expert Users
I want to add a default path /bin/mycommands along with others to be loaded as default path for all new accounts created on my system . With out the new accounts not having to change thie manually to /bin/mycommands.Do I change the /etc/profile ? is there any better way?
Please throw some... (2 Replies)
Discussion started by: sravusa
2 Replies
2. Solaris
I forget the Root Passwd of my Sun Netra 20 server and break the same by editing /etc/shadow.Now there is no passwd for Root.
And How to set new root passwd?Pls help.... (2 Replies)
Discussion started by: gini
2 Replies
3. Shell Programming and Scripting
I am getting the error "Can't call method "prepare" on an undefined value at..." with the following code:
<code>my %dbh;
my $dbh = DBI->connect("DBI:mysql:Customer_Data",
$username,
$password
) or die "Database connection... (1 Reply)
Discussion started by: vincaStar
1 Replies
4. Shell Programming and Scripting
Hi
Can someone help me to figure out
Want to execute few cmds in remote host thru ssh
Tried below cmd
-------------------------------excerpt-------------------
RDIR=/data1/logs ---> variable stores rem. server directory
TODAY="`date '+%b %d'`"
ssh -i $userid@$host "cd... (2 Replies)
Discussion started by: id100
2 Replies
5. Solaris
Hi Folks,
I have Solaris 10, latest release.
We have passwd aging set in /etc/defalut/passwd.
I have an account that passwd should never expire. Acheived by emptying associated users shadow file entries for passwd aging.
When I reset the users passwd using passwd command, it re enables... (3 Replies)
Discussion started by: BG_JrAdmin
3 Replies
6. AIX
Does anyone know when AIX started using /etc/security/passwd instead of /etc/passwd to store encrypted passwords? (1 Reply)
Discussion started by: Anne Neville
1 Replies
7. Red Hat
Hi
Hope someone can sched some light i'm trying to execute a script via sudo but i don't want to be prompted for a password when i run the script using sudo
my sudo entry does work in that the script gets executed but i'm having to give a password, my current entry is given below
user1 ... (0 Replies)
Discussion started by: duckeggs01
0 Replies
8. Shell Programming and Scripting
I have list of commands in a file in one sever and i need to execute these set of commands in the server to which i m telnetting to .. (4 Replies)
Discussion started by: nikhil jain
4 Replies
9. HP-UX
Hi All
I had installed sudo in HP UX 11.3 and it is working fine but not able to make entry required to set permission similar to ROOT without using password (PASSWD) change option for define user in /etc/sudoers file
Please help if some know the syntex? :confused::wall: (2 Replies)
Discussion started by: deviltech
2 Replies
10. UNIX for Dummies Questions & Answers
Hey guys,
Suppose i run passwd via bash shell. It is a suid program, which temporarily runs as root(owner) and modifies the user entries.
However, when i write a C file and give 4755 permission and root ownership to the 'a.out' file , it doesn't run as root in bash shell. I verified this by... (2 Replies)
Discussion started by: syncmaster
2 Replies
LEARN ABOUT SUNOS
d_passwd
d_passwd(4) File Formats d_passwd(4)
NAME
d_passwd - dial-up password file
SYNOPSIS
/etc/d_passwd
DESCRIPTION
A dial-up password is an additional password required of users who access the computer through a modem or dial-up port. The correct pass-
word must be entered before the user is granted access to the computer.
d_passwd is an ASCII file which contains a list of executable programs (typically shells) that require a dial-up password and the associ-
ated encrypted passwords. When a user attempts to log in on any of the ports listed in the dialups file (see dialups(4)), the login program
looks at the user's login entry stored in the passwd file (see passwd(4)), and compares the login shell field to the entries in d_passwd.
These entries determine whether the user will be required to supply a dial-up password.
Each entry in d_passwd is a single line of the form:
login-shell:password:
where
login-shell The name of the login program that will require an additional dial-up password.
password An encrypted password. Users accessing the computer through a dial-up port or modem using login-shell will be required to
enter this password before gaining access to the computer.
d_passwd should be owned by the root user and the root group. The file should have read and write permissions for the owner (root) only.
If the user's login program in the passwd file is not found in d_passwd or if the login shell field in passwd is empty, the user must sup-
ply the default password. The default password is the entry for /usr/bin/sh. If d_passwd has no entry for /usr/bin/sh, then those users
whose login shell field in passwd is empty or does not match any entry in d_passwd will not be prompted for a dial-up password.
Dial-up logins are disabled if d_passwd has only the following entry:
/usr/bin/sh:*:
EXAMPLES
Example 1: Sample d_passwd file.
Here is a sample d_passwd file:
/usr/lib/uucp/uucico:q.mJzTnu8icF0:
/usr/bin/csh:6k/7KCFRPNVXg:
/usr/bin/ksh:9df/FDf.4jkRt:
/usr/bin/sh:41FuGVzGcDJlw:
Generating An Encrypted Password
The passwd (see passwd(1)) utility can be used to generate the encrypted password for each login program. passwd generates encrypted pass-
words for users and places the password in the shadow (see shadow(4)) file. Passwords for the d_passwd file will need to be generated by
first adding a temporary user id using useradd (see useradd(1M)), and then using passwd(1) to generate the desired password in the shadow
file. Once the encrypted version of the password has been created, it can be copied to the d_passwd file.
For example:
1.
Type useradd tempuser and press Return. This creates a user named tempuser.
2. Type passwd tempuser and press Return. This creates an encrypted password for tempuser and places it in the shadow file.
3. Find the entry for tempuser in the shadow file and copy the encrypted password to the desired entry in the d_passwd file.
4. Type userdel tempuser and press Return to delete tempuser.
These steps must be executed as the root user.
FILES
/etc/d_passwd dial-up password file
/etc/dialups list of dial-up ports requiring dial-up passwords
/etc/passwd password file
/etc/shadow shadow password file
SEE ALSO
passwd(1), useradd(1M), dialups(4), passwd(4), shadow(4)
WARNINGS
When creating a new dial-up password, be sure to remain logged in on at least one terminal while testing the new password. This ensures
that there is an available terminal from which you can correct any mistakes that were made when the new password was added.
SunOS 5.10 2 Sep 2004 d_passwd(4)