ksquirrel-libs Radiance RGBE Buffer Overflows

2009.02.26
Risk: Medium
Local: Yes
Remote: No
CWE: CWE-119


CVSS Base Score: 6.8/10
Impact Subscore: 6.4/10
Exploitability Subscore: 8.6/10
Exploit range: Remote
Attack complexity: Medium
Authentication: No required
Confidentiality impact: Partial
Integrity impact: Partial
Availability impact: Partial

====================================================================== Secunia Research 25/02/2009 - ksquirrel-libs Radiance RGBE 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 * ksquirrel-libs 0.8.0. NOTE: Other versions may also be affected. ====================================================================== 2) Severity Rating: Moderately critical Impact: System access Where: From remote ====================================================================== 3) Vendor's Description of Software "ksquirrel-libs is a set of image codecs for KSquirrel. It is written on pure C++, so you can simply use it in any other project. At this time ksquirrel-libs supports 57 image formats.". Product Link: http://ksquirrel.sourceforge.net/subprojects.php ====================================================================== 4) Description of Vulnerability Secunia Research has discovered some buffer overflows ksquirrel-libs, which can be exploited by malicious people to compromise an application using the library. The vulnerabilities are caused due to boundary errors within the "mt_codec::getHdrHead()" function in kernel/kls_hdr/fmt_codec_hdr.cpp, which can be exploited to cause stack-based buffer overflows by e.g. tricking a user into opening a specially crafted Radiance RGBE (*.hdr) file. ====================================================================== 5) Solution Do not open untrusted Radiance RGBE images in an application using ksquirrel-libs. ====================================================================== 6) Time Table 09/01/2009 - Vendor notified. 04/02/2009 - Requested status update from vendor. 25/02/2009 - Public disclosure. ====================================================================== 7) Credits Discovered by Stefan Cornelius, Secunia Research. ====================================================================== 8) References The Common Vulnerabilities and Exposures (CVE) project has assigned CVE-2008-5263 for the vulnerability. ====================================================================== 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/2008-63/ Complete list of vulnerability reports published by Secunia Research: http://secunia.com/secunia_research/ ======================================================================


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