Security Basics mailing list archives
Re: some permission problem?
From: Jeff Harris <jharris () rallycentral us>
Date: Wed, 7 May 2003 09:16:14 -0700 (PDT)
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On Tue, 6 May 2003, Remington Winters wrote: |Well, first off, by default, unless it is in the webroot folder, it cant be |browsed to via the internet. So this sounds like an exploited service. |What webserver are you running, and what is the environment like? | |----- Original Message ----- |From: "SB CH" <chulmin2 () hotmail com> |To: <security-basics () securityfocus com> |Sent: Tuesday, May 06, 2003 12:29 AM |Subject: some permission problem? | |> Hello, all. |> |> I found that some malicious man browsed /etc/passwd file by httpd. |> So I would like to block to see /etc/passwd file by nobody(http user) |> permission. |> but as you know, any shell logging users should have read permission. |> |> So, is there any method to enable this? |> |> I think that only one method that all users are some group member except |> nobody. and only group members can read the /etc/passwd file, right? |> but this work is so so hard at my system. Check to make sure there aren't any links to / or /etc from anywhere that is being served by httpd. Also, check to see if you're using mod_auth_shadow or the like for authorization control. Make sure that your httpd user can't login. I belive that /etc/passwd is readable by everyone, but /etc/shadow is only rw for root. Jeff - -- Registered Linux user #304026. "lynx -source http://jharris.rallycentral.us/jharris.asc | gpg --import" or "gpg --keyserver pgp.mit.edu --recv-key B0890FED" Key fingerprint = 52FC 20BD 025A 8C13 5FC6 68C6 9CF9 46C2 B089 0FED -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.7 (GNU/Linux) Comment: Made with pgp4pine 1.76 iD8DBQE+uTFSnPlGwrCJD+0RAoWmAJ9frWL7fju2/Txa/D4qXik/QPhVTwCfVlCn 8ha7QbvXnnup04QDzzU4xmc= =9akm -----END PGP SIGNATURE----- --------------------------------------------------------------------------- FastTrain has your solution for a great CISSP Boot Camp. The industry's most recognized corporate security certification track, provides a comprehensive prospectus based upon the core principle concepts of security. This ALL INCLUSIVE curriculum utilizes lectures, case studies and true hands-on utilization of pertinent security tools. For a limited time you can enter for a chance to win one of the latest technological innovations, the SEGWAY HT. Log onto http://www.securityfocus.com/FastTrain-security-basics ----------------------------------------------------------------------------
Current thread:
- some permission problem? SB CH (May 06)
- Re: some permission problem? Remington Winters (May 07)
- Re: some permission problem? Jeff Harris (May 07)
- Re: some permission problem? martincad (May 07)
- Re: some permission problem? Jason Burroughs (May 08)
- Re: some permission problem? buzzdee (May 07)
- Re: some permission problem? Meritt James (May 07)
- Re: some permission problem? Jason Burroughs (May 07)
- Re: some permission problem? Barry Irwin (May 08)
- <Possible follow-ups>
- Re: some permission problem? SB CH (May 09)
- Re: some permission problem? Devdas Bhagat (May 12)
- Re: some permission problem? Remington Winters (May 07)