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TITLE:
SystemTap "staprun" Privilege Escalation Security Issues

SECUNIA ADVISORY ID:
SA45377

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/45377/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=45377

RELEASE DATE:
2011-07-29

DISCUSS ADVISORY:
http://secunia.com/advisories/45377/#comments

AVAILABLE ON SITE AND IN CUSTOMER AREA:
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 * Popularity
 * Comments
 * Criticality Level
 * Impact
 * Where
 * Solution Status
 * Operating System / Software
 * CVE Reference(s)

http://secunia.com/advisories/45377/

ONLY AVAILABLE IN CUSTOMER AREA:
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https://ca.secunia.com/?page=viewadvisory&vuln_id=45377

ONLY AVAILABLE WITH SECUNIA CSI AND SECUNIA PSI:
 * AUTOMATED SCANNING

http://secunia.com/vulnerability_scanning/personal/
http://secunia.com/vulnerability_scanning/corporate/wsus_sccm_3rd_third_party_patching/

DESCRIPTION:
Two security issues have been reported in SystemTap, which can be
exploited by malicious, local users to gain escalated privileges.

1) The staprun utility does not properly restrict the module search
path, which can be exploited to gain escalated privileges via
user-space probing and a malicious module search path.

2) A race condition within the module loading can be exploited to
gain escalated privileges by modifying modules on the disk after the
signature verification but prior to the initialisation of the
module.

Successful exploitation requires that the attacker is part of the
"stapusr" group.

SOLUTION:
Update to version 1.6.

PROVIDED AND/OR DISCOVERED BY:
Reported by the vendor.

ORIGINAL ADVISORY:
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2011-2502
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2011-2503
http://sources.redhat.com/git/gitweb.cgi?p=systemtap.git;a=commitdiff;h=4ecaadf545a729bb3e5f01f6f019716d49815d9a
http://sources.redhat.com/git/gitweb.cgi?p=systemtap.git;a=commitdiff;h=ed51cfa24ca27746ab09b59280b94117dd58cba3

OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

DEEP LINKS:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXTENDED DESCRIPTION:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXTENDED SOLUTION:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXPLOIT:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

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About:
This Advisory was delivered by Secunia as a free service to help
private users keeping their systems up to date against the latest
vulnerabilities.

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