# CVE-2018-5737: A problem with the implementation of the new serve-stale feature in BIND 9.12 can lead to an assertion failure in rbtdb.c, even when stale-answer-enable is off.


- **Severity:** Medium 5.9 (`CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Fix available:** Yes
- **Published:** 16 Jan 2019
- **Updated:** 16 Sep 2024
- **Also known as:** ALPINE-CVE-2018-5737, GHSA-9cxr-pmg7-9w5v

## What is CVE-2018-5737?

CVE-2018-5737 is a medium-severity vulnerability in Isc Bind, published on 16 Jan 2019. 

### Official description

A problem with the implementation of the new serve-stale feature in BIND 9.12 can lead to an assertion failure in rbtdb.c, even when stale-answer-enable is off. Additionally, problematic interaction between the serve-stale feature and NSEC aggressive negative caching can in some cases cause undesirable behavior from named, such as a recursion loop or excessive logging. Deliberate exploitation of this condition could cause operational problems depending on the particular manifestation -- either degradation or denial of service. Affects BIND 9.12.0 and 9.12.1.

Weakness: CWE-617 (Reachable Assertion)

## Which versions are affected by CVE-2018-5737?

It affects 3 products.


Products: Isc Bind, Netapp Cloud Backup, Netapp Data Ontap Edge.

## How do I fix CVE-2018-5737?

Upgrade to a fixed version.

## Is CVE-2018-5737 being exploited?

There is no known exploitation of CVE-2018-5737 in the wild and no public exploit code.

## Other vulnerabilities in Isc Bind

- [CVE-2008-0122](https://insights.sbomify.com/CVE-2008-0122/): Memory corruption in n/a (critical 10.0)
- [CVE-2001-0010](https://insights.sbomify.com/CVE-2001-0010/): Memory corruption in n/a (critical 10.0)
- [CVE-2001-0011](https://insights.sbomify.com/CVE-2001-0011/): Memory corruption in n/a (critical 10.0)
- [CVE-2001-0013](https://insights.sbomify.com/CVE-2001-0013/): Memory corruption in n/a (critical 10.0)
- [CVE-2000-1029](https://insights.sbomify.com/CVE-2000-1029/): Memory corruption in n/a (critical 10.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-5737 and fix it if it is affected.

What it is: CVE-2018-5737 is a medium-severity vulnerability in Isc Bind, published on 16 Jan 2019. 
Exploitation: There is no known exploitation of CVE-2018-5737 in the wild and no public exploit code.

Affected product: Isc Bind. 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-2018-5737/ (Markdown: https://insights.sbomify.com/CVE-2018-5737/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-5737
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-5737
- OSV: https://osv.dev/vulnerability/CVE-2018-5737

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-5737/
Summaries are generated and may contain mistakes; the official description above is the record.