Description of problem: tcpdump sets only effective uid and gid when -Z option is used (enabled by default) with -C option. It is a result of the patch for bug #176010. Setting only euid removes an extra security layer that might otherwise have mitigated an eventual security problem. A better solution for the bug is to call setuid() before the first file is opened, then all files will have pcap owner and tcpdump can drop root privileges completely. Version-Release number of selected component (if applicable): tcpdump-3.9.4-8.1 Steps to Reproduce: 1. tcpdump -C 1 -w dump 2. cat /proc/{tcpdump}/status | grep Uid Actual results: Uid: 0 77 0 77 Expected results: Uid: 77 77 77 77
This request was evaluated by Red Hat Product Management for inclusion in a Red Hat Enterprise Linux maintenance release. Product Management has requested further review of this request by Red Hat Engineering, for potential inclusion in a Red Hat Enterprise Linux Update release for currently deployed products. This request is not yet committed for inclusion in an Update release.
An advisory has been issued which should help the problem described in this bug report. This report is therefore being closed with a resolution of ERRATA. For more information on the solution and/or where to find the updated files, please follow the link below. You may reopen this bug report if the solution does not work for you. http://rhn.redhat.com/errata/RHSA-2007-0368.html