# CVE-2023-22839: BIG-IP DNS profile vulnerability

> Attackers can cause a denial of service by sending undisclosed requests to a BIG-IP virtual server with specific DNS and SYN cookie settings enabled.

- **Severity:** High 7.5 (`CVSS:3.1/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:** No
- **Published:** 1 Feb 2023
- **Updated:** 26 Mar 2025
- **Also known as:** GHSA-9mj7-f2wr-hjrv

## What is CVE-2023-22839?

CVE-2023-22839 is a high-severity vulnerability in F5 Big-Ip Domain Name System, published on 1 Feb 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

On BIG-IP versions 17.0.x before 17.0.0.2, 16.1.x before 16.1.3.3, 15.1.x before 15.1.8.1, 14.1.x before 14.1.5.3, and all version of 13.1.x, when a DNS profile with the Rapid Response Mode setting enabled is configured on a virtual server with hardware SYN cookies enabled, undisclosed requests cause the Traffic Management Microkernel (TMM) to terminate.  Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Weakness: CWE-476 (NULL Pointer Dereference)

## Which versions are affected by CVE-2023-22839?

It affects 34 products.


Products: F5 Big-Ip 10000s Firmware, F5 Big-Ip 10200v-Ssl Firmware, F5 Big-Ip 10200v Firmware, F5 Big-Ip 12000 Firmware, F5 Big-Ip 5000s Firmware, F5 Big-Ip 5200v-Ssl Firmware, F5 Big-Ip 5200v Firmware, F5 Big-Ip 7000s Firmware, F5 Big-Ip 7200v-Ssl Firmware, F5 Big-Ip 7200v Firmware, F5 Big-Ip Domain Name System, F5 Big-Ip I10600 Firmware, F5 Big-Ip I10800 Firmware, F5 Big-Ip I11600 Firmware, F5 Big-Ip I11800 Firmware, F5 Big-Ip I15600 Firmware, F5 Big-Ip I15800 Firmware, F5 Big-Ip I5600 Firmware, F5 Big-Ip I5800 Firmware, F5 Big-Ip I7600 Firmware and 14 more.

## How do I fix CVE-2023-22839?

No fix has been published for CVE-2023-22839 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-22839 being exploited?

There is no known exploitation of CVE-2023-22839 in the wild and no public exploit code.

## Other vulnerabilities in F5 Big-Ip Domain Name System

- [CVE-2019-11109](https://insights.sbomify.com/CVE-2019-11109/): Denial of service in Intel(R) SPS (medium 4.4)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-22839 and fix it if it is affected.

What it is: CVE-2023-22839 is a high-severity vulnerability in F5 Big-Ip Domain Name System, published on 1 Feb 2023. 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-2023-22839 in the wild and no public exploit code.

Affected product: F5 Big-Ip Domain Name System. 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-2023-22839/ (Markdown: https://insights.sbomify.com/CVE-2023-22839/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-22839
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-22839
- OSV: https://osv.dev/vulnerability/CVE-2023-22839

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-22839/
Summaries are generated and may contain mistakes; the official description above is the record.