# CVE-2018-19278: Memory corruption in n/a

> Remote attackers can crash Asterisk by sending specially crafted DNS SRV or NAPTR responses due to a buffer overflow in lookup processing.

- **Severity:** High 7.5 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 14 Nov 2018
- **Updated:** 16 Sep 2024
- **Also known as:** ALPINE-CVE-2018-19278, GHSA-47fm-v3pv-gm8p

## What is CVE-2018-19278?

CVE-2018-19278 is a high-severity memory corruption vulnerability in Digium Asterisk, published on 14 Nov 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official 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.

Weakness: CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer)

## Which versions are affected by CVE-2018-19278?

It affects 1 product.


Products: Digium Asterisk.

## How do I fix CVE-2018-19278?

Upgrade to a fixed version.

## Is CVE-2018-19278 being exploited?

There is no known exploitation of CVE-2018-19278 in the wild and no public exploit code.

## Other vulnerabilities in Digium Asterisk

- [CVE-2017-14100](https://insights.sbomify.com/CVE-2017-14100/): Command injection in n/a (critical 9.8)
- [CVE-2014-8418](https://insights.sbomify.com/CVE-2014-8418/): Privilege escalation in n/a (critical 9.0)
- [CVE-2011-1599](https://insights.sbomify.com/CVE-2011-1599/): Missing authorization in n/a (critical 9.0)
- [CVE-2017-16671](https://insights.sbomify.com/CVE-2017-16671/): Memory corruption in n/a (high 8.8)
- [CVE-2017-7617](https://insights.sbomify.com/CVE-2017-7617/): Memory corruption in n/a (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-19278 and fix it if it is affected.

What it is: CVE-2018-19278 is a high-severity memory corruption vulnerability in Digium Asterisk, published on 14 Nov 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2018-19278 in the wild and no public exploit code.

Affected product: Digium Asterisk. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2018-19278/ (Markdown: https://insights.sbomify.com/CVE-2018-19278/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-19278
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-19278
- OSV: https://osv.dev/vulnerability/CVE-2018-19278

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-19278/
Summaries are generated and may contain mistakes; the official description above is the record.