====================================================================== Secunia Research 29/05/2008 - imlib2 PNM and XPM Buffer Overflows - ====================================================================== 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 * imlib2 1.4.0 NOTE: Other versions may also be affected. ====================================================================== 2) Severity Rating: Highly critical Impact: System access Where: Remote ====================================================================== 3) Vendor's Description of Software "Imlib 2 is the successor to Imlib. It is NOT a newer version -- it is a completely new library. Imlib 2 can be installed alongside Imlib 1.x without any problems since they are effectively different libraries which have very similar functionality." Product Link: http://enlightenment.org ====================================================================== 4) Description of Vulnerability Secunia Research has discovered two vulnerabilities in imlib2, which can be exploited by malicious people to cause a DoS (Denial of Service) or compromise an application using the library. 1) A boundary error exists within the "load()" function in src/modules/loaders/loader_pnm.c when processing the header of a PNM image file. This can be exploited to cause a stack-based buffer overflow by e.g. tricking a user into opening a specially crafted PNM image in an application using the imlib2 library. Successful exploitation allows execution of arbitrary code. 2) A boundary error exists within the "load()" function in src/modules/loader_xpm.c when processing an XPM image file. This can be exploited to cause a stack-based buffer overflow by e.g. tricking a user into opening a specially crafted XPM image with an application using the imlib2 library. Successful exploitation may allow execution of arbitrary code. ====================================================================== 5) Solution Fixed in the CVS repository. ====================================================================== 6) Time Table 27/05/2008 - Vendor notified. 27/05/2008 - Vendor response. 29/05/2008 - Public disclosure. ====================================================================== 7) Credits Discovered by Stefan Cornelius, Secunia Research. ====================================================================== 8) References The Common Vulnerabilities and Exposures (CVE) project has assigned CVE-2008-2426 for these vulnerabilities. ====================================================================== 9) About Secunia Secunia offers vulnerability management solutions to corporate customers with verified and reliable vulnerability intelligence relevant to their specific system configuration: http://corporate.secunia.com/ 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/ 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://corporate.secunia.com/secunia_research/33/ Secunia regularly hires new skilled team members. Check the URL below to see currently vacant positions: http://secunia.com/secunia_vacancies/ Secunia offers a FREE mailing list called Secunia Security Advisories: http://secunia.com/secunia_security_advisories/ ====================================================================== 10) Verification Please verify this advisory by visiting the Secunia website: http://secunia.com/secunia_research/2008-25/ Complete list of vulnerability reports published by Secunia Research: http://secunia.com/secunia_research/ ======================================================================