# CVE-2023-27102: Null dereference in n/a

> A segmentation violation in libde265 allows attackers to cause a denial of service via crafted video files.

- **Severity:** Medium 6.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/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:** A user has to click or open something
- **Fix available:** Yes
- **Published:** 15 Mar 2023
- **Updated:** 2 Aug 2024
- **Also known as:** ALPINE-CVE-2023-27102, DEBIAN-CVE-2023-27102, GHSA-xj6j-6m68-mr7h, UBUNTU-CVE-2023-27102

## What is CVE-2023-27102?

CVE-2023-27102 is a medium-severity vulnerability in Struktur Libde265, published on 15 Mar 2023. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

Libde265 v1.0.11 was discovered to contain a segmentation violation via the function decoder_context::process_slice_segment_header at decctx.cc.

Weakness: CWE-476 (NULL Pointer Dereference)

## Which versions are affected by CVE-2023-27102?

It affects 1 product.


Products: Struktur Libde265.

## How do I fix CVE-2023-27102?

Upgrade to a fixed version.

## Is CVE-2023-27102 being exploited?

There is no known exploitation of CVE-2023-27102 in the wild and no public exploit code.

## Other vulnerabilities in Struktur Libde265

- [CVE-2023-49465](https://insights.sbomify.com/CVE-2023-49465/): Memory corruption in n/a (high 8.8)
- [CVE-2023-49467](https://insights.sbomify.com/CVE-2023-49467/): Memory corruption in n/a (high 8.8)
- [CVE-2023-49468](https://insights.sbomify.com/CVE-2023-49468/): Memory corruption in n/a (high 8.8)
- [CVE-2023-27103](https://insights.sbomify.com/CVE-2023-27103/): Memory corruption in n/a (high 8.8)
- [CVE-2026-33164](https://insights.sbomify.com/CVE-2026-33164/): NULL Pointer Dereference in libde265 (high 8.7)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-27102 and fix it if it is affected.

What it is: CVE-2023-27102 is a medium-severity vulnerability in Struktur Libde265, published on 15 Mar 2023. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2023-27102 in the wild and no public exploit code.

Affected product: Struktur Libde265. 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-2023-27102/ (Markdown: https://insights.sbomify.com/CVE-2023-27102/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-27102
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-27102
- OSV: https://osv.dev/vulnerability/CVE-2023-27102

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-27102/
Summaries are generated and may contain mistakes; the official description above is the record.