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TITLE:
Bokken Insecure Temporary File Security Issue

SECUNIA ADVISORY ID:
SA47252

VERIFY ADVISORY:
Secunia.com
https://secunia.com/advisories/47252/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=47252

RELEASE DATE:
2011-12-14

DISCUSS ADVISORY:
https://secunia.com/advisories/47252/#comments

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

https://secunia.com/advisories/47252/

ONLY AVAILABLE IN CUSTOMER AREA:
 * Authentication Level
 * Report Reliability
 * Secunia PoC
 * Secunia Analysis
 * Systems Affected
 * Approve Distribution
 * Remediation Status
 * Secunia CVSS Score
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https://ca.secunia.com/?page=viewadvisory&vuln_id=47252

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

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

DESCRIPTION:
A security issue has been discovered in Bokken, which can be
exploited by malicious, local users to perform certain actions with
escalated privileges.

The security issue is caused due to the application creating a
temporary file (e.g. "/tmp/graph.dot") in an insecure manner, which
can be exploited to overwrite arbitrary files via symlink attacks.

Successful exploitation requires that the radare backend is used.

The security issue is confirmed in version 1.5. Other versions may
also be affected.

SOLUTION:
Restrict access to trusted users only. Do not use the radare backend.

PROVIDED AND/OR DISCOVERED BY:
Reported in a Debian bug by  Paul Wise.

ORIGINAL ADVISORY:
Debian bug #651931:
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=651931

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

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

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

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

EXPLOIT:
Further details available in Customer Area:
https://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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Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

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