====================================================================== Secunia Research 22/02/2010 - Bournal Insecure Temporary Files Security Issue - ====================================================================== Table of Contents Affected Software....................................................1 Severity.............................................................2 Vendor's Description of Software.....................................3 Description of Vulnerability.........................................4 Solution.............................................................5 Time Table...........................................................6 Credits..............................................................7 References...........................................................8 About Secunia........................................................9 Verification........................................................10 ====================================================================== 1) Affected Software * Bournal 1.4 NOTE: Other versions may also be affected. ====================================================================== 2) Severity Rating: Not critical Impact: Privilege escalation Where: Local system ====================================================================== 3) Vendor's Description of Software "Bournal is a bash script that allows you to keep a personal, minimalistic, password-protected journal, log, or diary. It includes encryption, regexp searches, and a date-sorted list for editing old entries. Since Bournal is pure bash, it should be easily editable for the CLI-savvy.". Product Link: http://becauseinter.net/bournal/ ====================================================================== 4) Description of Security Issue Secunia Research has discovered a security issue in Bournal, which can be exploited by malicious, local users to perform certain actions with escalated privileges. The script uses temporary files in an insecure manner, which can be exploited to e.g. overwrite arbitrary files via symlink attacks when running the update check via the "--hack_the_gibson" parameter. ====================================================================== 5) Solution Update to version 1.4.1, which removes the vulnerable functionality. ====================================================================== 6) Time Table 12/02/2010 - Vendor notified. 12/02/2010 - Vendor response. 22/02/2010 - Public disclosure. ====================================================================== 7) Credits Discovered by Secunia Research. ====================================================================== 8) References The Common Vulnerabilities and Exposures (CVE) project has assigned CVE-2010-0118 for the security issue. ====================================================================== 9) About Secunia Secunia offers vulnerability management solutions to corporate customers with verified and reliable vulnerability intelligence relevant to their specific system configuration: http://secunia.com/advisories/business_solutions/ Secunia also provides a publicly accessible and comprehensive advisory database as a service to the security community and private individuals, who are interested in or concerned about IT-security. http://secunia.com/advisories/ Secunia believes that it is important to support the community and to do active vulnerability research in order to aid improving the security and reliability of software in general: http://secunia.com/secunia_research/ Secunia regularly hires new skilled team members. Check the URL below to see currently vacant positions: http://secunia.com/corporate/jobs/ Secunia offers a FREE mailing list called Secunia Security Advisories: http://secunia.com/advisories/mailing_lists/ ====================================================================== 10) Verification Please verify this advisory by visiting the Secunia website: http://secunia.com/secunia_research/2010-6/ Complete list of vulnerability reports published by Secunia Research: http://secunia.com/secunia_research/ ======================================================================