Signature Detail

HTTP: WordPerfect 5.x Document Download

This signature detects downloads of WordPerfect 5.x files through HTTP. A vulnerability exists in the WordPerfect 5.x converter. Attackers can entice users to download a malformed WordPerfect file on a Web page. If the user has Microsoft Office, Publisher, Works, FrontPage 2000 or higher installed, Microsoft Word attempts to open the document and the vulnerability might be triggered.

Extended Description

Microsoft WordPerfect Converter is reported prone to a remote buffer overflow vulnerability when handling malformed files. This vulnerability may allow a remote attacker to execute arbitrary code on a vulnerable computer to gain unauthorized access. To carry out an attack, the attacker may create a malicious file and entice a user to open the file through an application that employs WordPerfect Converter. Microsoft WordPerfect Converter is installed by default in various versions of Microsoft Office, Microsoft Word, Microsoft FrontPage, Microsoft Publisher, and Microsoft Works Suite. Microsoft Office 2003 Service Pack 1 is not affected by this vulnerability. This issue may be similar in nature to BID 8538 (Microsoft WordPerfect Converter Buffer Overrun Vulnerability).

Affected Products

• Microsoft frontpage_2000 SP1
• Microsoft frontpage_2000 SP2
• Microsoft frontpage_2000 SR1
• Microsoft frontpage_2000
• Microsoft frontpage_2002 SP1
• Microsoft frontpage_2002
• Microsoft frontpage_2003
• Microsoft office_2000 SP1
• Microsoft office_2000 SP2
• Microsoft office_2000 SP3
• Microsoft office_2000
• Microsoft office_2003
• Microsoft office_xp SP1
• Microsoft office_xp SP2
• Microsoft office_xp SP3
• Microsoft office_xp
• Microsoft publisher_2000
• Microsoft publisher_2002
• Microsoft publisher_2003
• Microsoft word_2000 SP2
• Microsoft word_2000 SP3
• Microsoft word_2000 SR1
• Microsoft word_2000 Sr1a
• Microsoft word_2000
• Microsoft word_2002 SP1
• Microsoft word_2002 SP2
• Microsoft word_2002
• Microsoft word_2003
• Microsoft works_2000
• Microsoft works_suite_2001
• Microsoft works_suite_2002
• Microsoft works_suite_2003
• Microsoft works_suite_2004

References

• URL: http://www.microsoft.com/technet/security/bulletin/ms04-027.mspx