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CVE-2004-0842

• Severity: high (CVSS 7.5 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 56.6% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2004-09-14 · updated 2026-06-16

Description

Internet Explorer 6.0 SP1 and earlier, and possibly other versions, allows remote attackers to cause a denial of service (application crash from "memory corruption") via certain malformed Cascading Style Sheet (CSS) elements that trigger heap-based buffer overflows, as demonstrated using the "<STYLE>@;/*" string, possibly due to a missing comment terminator that may cause an invalid length to trigger a large memory copy operation, aka the "CSS Heap Memory Corruption Vulnerability."

Affected products

• Avaya Definity One Media Server: all versions
• Avaya Ip600 Media Servers: all versions
• Avaya Modular Messaging Message Storage Server: 1.1, 2.0
• Avaya S3400: all versions
• Avaya S8100: all versions
• Microsoft Ie: 6.0-sp1
• Microsoft Internet Explorer 11: 5.0.1, 5.0.1-sp1, 5.0.1-sp2, 5.0.1-sp3, 5.0.1-sp4, 5.5 (+3)

References

• http://marc.info/?l=bugtraq&m=109107496214572&w=2
• http://marc.info/?l=full-disclosure&m=109060455614702&w=2
• http://marc.info/?l=full-disclosure&m=109102919426844&w=2
• http://secunia.com/advisories/12806
• http://www.ciac.org/ciac/bulletins/p-006.shtml
• http://www.ecqurity.com/adv/IEstyle.html
• http://www.kb.cert.org/vuls/id/291304
• http://www.securiteam.com/exploits/5NP042KF5A.html
• http://www.securityfocus.com/bid/10816
• http://www.us-cert.gov/cas/techalerts/TA04-293A.html
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2004/ms04-038
• https://exchange.xforce.ibmcloud.com/vulnerabilities/16675

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