Bugtraq mailing list archives
Re: HTTPD bug
From: avalon () coombs anu edu au (Darren Reed)
Date: Mon, 17 Apr 1995 13:05:11 +1000 (EST)
In some mail from Mr Martin J Hargreaves, they said:
I don't think this has been brought up on bugtraq yet, if it has sorry. This is from Linux-security, posted by "Mr Pink (vince () dallas demon co uk) apologies to Mr. Pink for my instant repost. On Sun, 16 Apr 1995, Mr Pink wrote:Hello all, i was browsing thru alt.2600, as you do, and spotted something of interest it appears there is a problem with the CERN httpd. It allows you to create a directory in a users home dir that can be accessed via mosaic/netscape. well the bad bit of news is, if you sym link this dir to root (/), file ownership becomes non existent. i was easily able to read the shadow passwd file!
You can't save users or sys-admins from themselves, as this goes to show. I started writing something up on httpd and security, quite a few months ago, but never really had the time to get back to it (was playing with CERN httpd 3.0pre6 at the time). Did a bit of RTFS too which was hmmm... interesting. [http://www.arbld.unimelb.edu.au/~darrenr/httpd.ps if you're really interested but the WWW sucks so...] -------excert from my /etc/httpd.conf-------- UserDir www SecurityLevel high UserId nobody GroupId nogroup ParentUserId nobody ParentGroupId nogroup # DirAccess off DirReadme top DirShowHidden off DirShowBytes on DirShowCase on DirShowMode off DirShowOwner off DirShowGroup off --------------------------------------------- Make sure all of those are set as above. httpd is *NOT* meant to be run as root, which is the *ONLY* way it will read your shadow passwd file unless the file perms on it are stuffed anyway. darren
Current thread:
- Re: HTTPD bug Mr Martin J Hargreaves (Apr 16)
- Re: HTTPD bug Darren Reed (Apr 16)
- Re: HTTPD bug Baba Z Buehler (Apr 17)
- Re: HTTPD bug Mr Martin J Hargreaves (Apr 17)
- Re: HTTPD bug Joe Konczal (Apr 18)
- Re: HTTPD bug Mr Martin J Hargreaves (Apr 17)
- Re: HTTPD bug carson () lehman com (Apr 17)
- Re: HTTPD bug Tom Fitzgerald (Apr 17)