CRITICAL: CVE-2008-5540 (CVSS 9.3) — secure computing secure web gateway

CVE: CVE-2008-5540

CVSS: 9.3 (2.0) — AV:N/AC:M/Au:N/C:C/I:C/A:C

Severity: CRITICAL

Status: Critical advisory

Affected

• secure computing secure web gateway
• secure computing webwasher
• microsoft internet explorer

Summary

Secure Computing Secure Web Gateway (aka Webwasher), when Internet Explorer 6 or 7 is used, allows remote attackers to bypass detection of malware in an HTML document by placing an MZ header (aka "EXE info") at the beginning, and modifying the filename to have (1) no extension, (2) a .txt extension, or (3) a .jpg extension, as demonstrated by a document containing a CVE-2006-5745 exploit.

Verified Sources

• NVD entry
• GitHub Advisory
• MITRE

References

• http://securityreason.com/securityalert/4723
• http://www.securityfocus.com/archive/1/498995/100/0/threaded
• http://www.securityfocus.com/archive/1/499043/100/0/threaded
• https://exchange.xforce.ibmcloud.com/vulnerabilities/47435
• http://securityreason.com/securityalert/4723
• http://www.securityfocus.com/archive/1/498995/100/0/threaded
• http://www.securityfocus.com/archive/1/499043/100/0/threaded
• https://exchange.xforce.ibmcloud.com/vulnerabilities/47435

_Validated by the Lyrie Threat Intelligence Pipeline — 3 independent sources confirmed before publication. No speculation._