CVE-2008-3524
First published: Mon Aug 11 2008(Updated: )
Description of problem: Description of problem: /etc/rc.sysinit makes | find -L /var/lock /var/run ! -type d -exec rm -f {} \; at every start. It is common practice to have daemon-writable subdirs below /var/run or /var/lock (e.g. /var/run/openldap). When such a daemon is compromised, an attack could create a | /var/run/openldap/foo -> / symlink which wipes whole system at next startup. Version-Release number of selected component (if applicable): initscripts-8.76.2-1.x86_64 How reproducible: 100% Steps to Reproduce: 1. mkdir /var/run/foo 2. chown nobody:nobody /var/run/foo 3. runuser nobody -s /bin/sh 'ln -s / /var/run/foo/bar' 4. reboot Actual results: a lot of 'command not found' errors on startup Additional info: Kudos to Herbert Poetzl about discovering this vulnerability.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Redhat Fedora | =9 | |
| Redhat Initscripts | =8.76.3 |
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Reference Links
- http://secunia.com/advisories/32037
- http://www.securityfocus.com/bid/31385
- https://bugzilla.redhat.com/show_bug.cgi?id=458504
- https://www.redhat.com/archives/fedora-package-announce/2008-September/msg01135.html
- https://bugzilla.redhat.com/show_bug.cgi?id=458652
- https://issues.rpath.com/browse/RPL-2857
- http://wiki.rpath.com/wiki/Advisories:rPSA-2008-0318
- http://secunia.com/advisories/32710
- https://exchange.xforce.ibmcloud.com/vulnerabilities/45402
- http://git.fedorahosted.org/git/?p=initscripts.git;a=commitdiff;h=b8fbfde343e39337bcbddc33cab0bc30ee4fb0e3
- http://admin.fedoraproject.org/updates/initscripts-8.76.3-1
- https://admin.fedoraproject.org/updates/F9/FEDORA-2008-7667
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