CVE-2004-0903: Conectiva Linux

High severity, CVSS 10.0. EPSS: 9.7% chance of exploitation in the next 30 days.

Stack-based buffer overflow in the writeGroup function in nsVCardObj.cpp for Mozilla Firefox before the Preview Release, Mozilla before 1.7.3, and Thunderbird before 0.8 allows remote attackers to execute arbitrary code via malformed VCard attachments that are not properly handled when previewing a message.

Affected products

• Conectiva Linux: version 9.0 only; version 10.0 only
• Mozilla Mozilla: version 1.7 only; version 1.7.1 only; version 1.7.2 only
• Mozilla Thunderbird: version 0.7 only; version 0.7.1 only; version 0.7.2 only; version 0.7.3 only
• Red Hat Enterprise Linux: version 2.1 only; version 3.0 only
• Red Hat Enterprise Linux Desktop: version 3.0 only
• Red Hat Fedora Core: version core_1.0 only
• Red Hat Linux: version 7.3 only; version 9.0 only
• Red Hat Linux Advanced Workstation: version 2.1 only
• Suse Suse Linux: version 1.0 only; version 8 only; version 8.1 only; version 8.2 only; version 9.0 only; version 9.1 only

Published 2005-01-27. Last modified 2026-06-16.