====================================================================== Secunia Research 08/04/2008
- Symantec Mail Security Applix Graphics Parsing Vulnerabilities - ====================================================================== 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 * Symantec Mail Security for SMTP 5.0.1 p187 * Symantec Mail Security for Exchange 5.0.7.373 * Symantec Mail Security for Domino 7.5.0.19 NOTE: Other versions may also be affected. ====================================================================== 2) Severity Rating: Highly critical Impact: From remote Where: System access ====================================================================== 3) Vendor's Description of Software "Symantec Mail Security 5.0 for SMTP provides high-performance, integrated mail protection against virus threats, spam, and other unwanted content at the earliest point of network entry.". Product Link: http://www.symantec.com/business/products/overview.jsp?pcid=2250&pvid=845_1 ====================================================================== 4) Description of Vulnerability Secunia Research has discovered some vulnerabilities Symantec Mail Security, which can be exploited by malicious people to compromise a vulnerable system when scanning Applix documents. 1) An unsafe call to "sscanf()" when parsing the "ENCODING" attribute of the "*BEGIN" tag can be exploited to cause a stack-based buffer overflow. 2) A boundary error when parsing overly long tokens from the input file can be exploited to cause a heap-based buffer overflow. 3) A boundary error when parsing the initial "*BEGIN" tag can be exploited to cause stack-based buffer overflow. Successful exploitation of the above vulnerabilities allows execution of arbitrary code. 4) A logic error when parsing long tokens can result in an infinite loop. Exploitation will result in maximum CPU usage until an application-configured timeout expires. In some cases memory usage will increase until the OS terminates the process. ====================================================================== 5) Solution For Symantec Mail Security for SMTP, update to version 5.0.1 patch 189, which resolves the vulnerabilities. The vulnerabilities will be addressed in upcoming patches for Symantec Mail Security for Exchange and Symantec Mail Security for Domino. ====================================================================== 6) Time Table 21/11/2007 - Autonomy, Symantec and other vendors notified. 21/11/2007 - Autonomy responds. 21/11/2007 - Symantec responds. 11/03/2008 - Symantec releases p189 of SMSSMTP 5.0.1 containing fix. 14/03/2008 - Secunia notifies other vendors of published fix. 08/04/2008 - Public disclosure. ====================================================================== 7) Credits Discovered by Dyon Balding, Secunia Research. ====================================================================== 8) References The Common Vulnerabilities and Exposures (CVE) project has assigned CVE-2007-5405 for the overflows and CVE-2007-5406 for the infinite loop. ====================================================================== 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/2007-98/ Complete list of vulnerability reports published by Secunia Research: http://secunia.com/secunia_research/ ====================================================================== _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.grok.org.uk/full-disclosure-charter.html Hosted and sponsored by Secunia - http://secunia.com/