====================================================================== Secunia Research 23/08/2010 - Mono libgdiplus Image Processing Three Integer 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 * libgdiplus 2.6.7 NOTE: Other versions may also be affected. ====================================================================== 2) Severity Rating: Moderately critical Impact: System access Where: Remote ====================================================================== 3) Vendor's Description of Software "Libgdiplus is the Mono library that provide a GDI+ comptible API on non-Windows operating systems". Product Link: http://www.mono-project.com/Libgdiplus ====================================================================== 4) Description of Vulnerability Secunia Research has discovered three vulnerabilities in libgdiplus for Mono, which can be exploited by malicious people to compromise an application using the library. 1) An integer overflow error within the "gdip_load_tiff_image()" function in src/tiffcodec.c can be exploited to cause a heap-based buffer overflow by e.g. processing specially crafted TIFF images in an application using the library. 2) An integer overflow error within the "gdip_load_jpeg_image_internal()" function in src/jpegcodec.c can be exploited to cause a heap-based buffer overflow by e.g. processing specially crafted JPEG images in an application using the library. 3) An integer overflow error within the "gdip_read_bmp_image()" function in src/bmpcodec.c can be exploited to cause a heap-based buffer overflow by e.g. processing specially crafted BMP images in an application using the library. ====================================================================== 5) Solution Do not process untrusted images in an application using the library. ====================================================================== 6) Time Table 12/08/2010 - Vendor notified. 12/08/2010 - Vendor response. 19/08/2010 - Accidental public disclosure by an involved party. 23/08/2010 - Public disclosure. ====================================================================== 7) Credits Discovered by Stefan Cornelius, Secunia Research. ====================================================================== 8) References The Common Vulnerabilities and Exposures (CVE) project has assigned CVE-2010-1526 for the 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://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/2010-102/ Complete list of vulnerability reports published by Secunia Research: http://secunia.com/secunia_research/ ======================================================================