CVE-2011-2503 Information

Description

The insert_module function in runtime/staprun/staprun_funcs.c in the systemtap runtime tool (staprun) in SystemTap before 1.6 does not properly validate a module when loading it which allows local users to gain privileges via a race condition between the signature validation and the module initialization.

Reference

http://secunia.com/advisories/45377 http://secunia.com/advisories/46920 http://sources.redhat.com/git/gitweb.cgi?p=systemtap.git;a=blob;f=NEWS;hb=304d73b1fea24af791f2a129fb141c5009eae6a8 http://sources.redhat.com/git/gitweb.cgi?p=systemtap.git;a=commitdiff;h=ed51cfa24ca27746ab09b59280b94117dd58cba3 http://www.debian.org/security/2011/dsa-2348 https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2011-2503