# CVE-2023-29487: Denial of service in n/a

> Attackers could cause denial of service in Heimdal Thor agent via the Threat To Process Correlation module, though the vendor disputes this as a valid vulnerability.

- **Severity:** Critical 9.1 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/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:** 21 Dec 2023
- **Updated:** 26 Nov 2024
- **Also known as:** GHSA-9jxf-24g6-463j

## What is CVE-2023-29487?

CVE-2023-29487 is a critical denial of service vulnerability in n/a, published on 21 Dec 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

An issue was discovered in Heimdal Thor agent versions 3.4.2 and before on Windows and 2.6.9 and before on macOS, allows attackers to cause a denial of service (DoS) via the Threat To Process Correlation threat prevention module. NOTE: Heimdal asserts this is not a valid vulnerability. Their DNS Security for Endpoint solution includes an optional feature to provide extra information on the originating process that made a DNS request. The lack of process identification in DNS logs is therefore falsely categorized as a DoS issue.

Weakness: CWE-1333 (Inefficient Regular Expression Complexity)

## Which versions are affected by CVE-2023-29487?

It affects 1 product.


Products: Heimdalsecurity Thor.

## How do I fix CVE-2023-29487?

No fix has been published for CVE-2023-29487 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-29487 being exploited?

There is no known exploitation of CVE-2023-29487 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2023-29485](https://insights.sbomify.com/CVE-2023-29485/): Security feature bypass in n/a (critical 9.8)
- [CVE-2023-29486](https://insights.sbomify.com/CVE-2023-29486/): Security feature bypass in n/a (critical 9.8)
- [CVE-2019-8351](https://insights.sbomify.com/CVE-2019-8351/): Weak cryptography in n/a (critical 9.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-29487 and fix it if it is affected.

What it is: CVE-2023-29487 is a critical denial of service vulnerability in n/a, published on 21 Dec 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-2023-29487 in the wild and no public exploit code.

Affected product: n/a. 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-2023-29487/ (Markdown: https://insights.sbomify.com/CVE-2023-29487/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-29487
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-29487
- OSV: https://osv.dev/vulnerability/CVE-2023-29487

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-29487/
Summaries are generated and may contain mistakes; the official description above is the record.