Public bug reported:
On Xenial, "postfix check" complains like that:
postfix/postfix-script: warning: group or other writable:
/usr/lib/postfix/./libpostfix-tls.so.1
postfix/postfix-script: warning: group or other writable:
/usr/lib/postfix/./libpostfix-util.so.1
postfix/postfix-script: warning: group or other writable:
/usr/lib/postfix/./sbin/lmtp
postfix/postfix-script: warning: group or other writable:
/usr/lib/postfix/./libpostfix-master.so.1
postfix/postfix-script: warning: group or other writable:
/usr/lib/postfix/./libpostfix-global.so.1
postfix/postfix-script: warning: group or other writable:
/usr/lib/postfix/./libpostfix-dns.so.1
postfix/postfix-script: warning: group or other writable:
/usr/lib/postfix/sbin/./lmtp
Those are symlinks:
root@smtp01:~# ls -l /usr/lib/postfix/./libpostfix-tls.so.1
lrwxrwxrwx 1 root root 23 Aug 8 15:23 /usr/lib/postfix/./libpostfix-tls.so.1
-> libpostfix-tls.so.1.0.1
Yet the real .so has no permission issue:
# ls -l /usr/lib/postfix/./libpostfix-tls.so.1.0.1
-rw-r--r-- 1 root root 103344 Aug 8 15:23
/usr/lib/postfix/./libpostfix-tls.so.1.0.1
This problem doesn't happen on Trusty.
Additional information:
# lsb_release -rd
Description: Ubuntu 16.04.3 LTS
Release: 16.04
# apt-cache policy postfix
postfix:
Installed: 3.1.0-3ubuntu0.1
Candidate: 3.1.0-3ubuntu0.1
Version table:
*** 3.1.0-3ubuntu0.1 500
500 http://archive.ubuntu.com/ubuntu xenial-updates/main amd64 Packages
100 /var/lib/dpkg/status
3.1.0-3 500
500 http://archive.ubuntu.com/ubuntu xenial/main amd64 Packages
** Affects: postfix (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1728723
Title:
postfix check warns about symlink being group writable
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