# CVE-2023-23765: Incorrect comparison vulnerability in GitHub Enterprise Server leading to commit smuggling

> Attackers with write access can smuggle commits by exploiting incorrect comparison logic, causing misleading diffs in reopened pull requests.

- **Severity:** Medium 4.8 (`CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 30 Aug 2023
- **Updated:** 27 Sep 2024
- **Also known as:** GHSA-wj8c-rxgm-9jcm

## What is CVE-2023-23765?

CVE-2023-23765 is a medium-severity vulnerability in Github Enterprise Server, published on 30 Aug 2023. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

### Official description

An incorrect comparison vulnerability was identified in GitHub Enterprise Server that allowed commit smuggling by displaying an incorrect diff in a re-opened Pull Request. To exploit this vulnerability, an attacker would need write access to the repository. This vulnerability was reported via the  GitHub Bug Bounty Program https://bounty.github.com/ .

Weakness: CWE-697 (Incorrect Comparison)

## Which versions are affected by CVE-2023-23765?

It affects 1 product.


Products: Github Enterprise Server.

## How do I fix CVE-2023-23765?

No fix has been published for CVE-2023-23765 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-23765 being exploited?

There is no known exploitation of CVE-2023-23765 in the wild and no public exploit code.

## Other vulnerabilities in Github Enterprise Server

- [CVE-2024-4985](https://insights.sbomify.com/CVE-2024-4985/): Auth bypass in Enterprise Server (critical 10.0)
- [CVE-2022-23739](https://insights.sbomify.com/CVE-2022-23739/): Missing authorization in GitHub Enterprise Server (critical 9.8)
- [CVE-2022-46255](https://insights.sbomify.com/CVE-2022-46255/): Improper Limitation of a Pathname to a Restricted Directory in GitHub Enterprise Server leading to RCE (critical 9.8)
- [CVE-2021-22869](https://insights.sbomify.com/CVE-2021-22869/): Improper access control in GitHub Enterprise Server allows self-hosted runners to execute outside their control group (critical 9.8)
- [CVE-2024-9487](https://insights.sbomify.com/CVE-2024-9487/): Auth bypass in Enterprise Server (critical 9.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-23765 and fix it if it is affected.

What it is: CVE-2023-23765 is a medium-severity vulnerability in Github Enterprise Server, published on 30 Aug 2023. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2023-23765 in the wild and no public exploit code.

Affected product: Github Enterprise Server. 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-2023-23765/ (Markdown: https://insights.sbomify.com/CVE-2023-23765/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-23765
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-23765
- OSV: https://osv.dev/vulnerability/CVE-2023-23765

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-23765/
Summaries are generated and may contain mistakes; the official description above is the record.