# CVE-2023-43305: Information disclosure in n/a

> Attackers can leak channel access tokens to send malicious notifications, potentially compromising user accounts and data integrity.

- **Severity:** High 8.2 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 8 Dec 2023
- **Updated:** 2 Aug 2024
- **Also known as:** GHSA-jxx6-2j9j-fc8x

## What is CVE-2023-43305?

CVE-2023-43305 is a high-severity vulnerability in Linecorp Line, published on 8 Dec 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

An issue in studio kent mini-app on Line v13.6.1 allows attackers to send crafted malicious notifications via leakage of the channel access token.

## Which versions are affected by CVE-2023-43305?

It affects 1 product.


Products: Linecorp Line.

## How do I fix CVE-2023-43305?

No fix has been published for CVE-2023-43305 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-43305 being exploited?

There is no known exploitation of CVE-2023-43305 in the wild and no public exploit code.

## Other vulnerabilities in Linecorp Line

- [CVE-2023-45559](https://insights.sbomify.com/CVE-2023-45559/): Information disclosure in n/a (high 8.2)
- [CVE-2023-43300](https://insights.sbomify.com/CVE-2023-43300/): Information disclosure in n/a (high 8.2)
- [CVE-2023-43301](https://insights.sbomify.com/CVE-2023-43301/): Code injection in n/a (high 8.2)
- [CVE-2023-43302](https://insights.sbomify.com/CVE-2023-43302/): Information disclosure in n/a (high 8.2)
- [CVE-2023-43303](https://insights.sbomify.com/CVE-2023-43303/): Information disclosure in n/a (high 8.2)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-43305 and fix it if it is affected.

What it is: CVE-2023-43305 is a high-severity vulnerability in Linecorp Line, published on 8 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-2023-43305 in the wild and no public exploit code.

Affected product: Linecorp Line. 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-2023-43305/ (Markdown: https://insights.sbomify.com/CVE-2023-43305/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-43305
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-43305
- OSV: https://osv.dev/vulnerability/CVE-2023-43305

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-43305/
Summaries are generated and may contain mistakes; the official description above is the record.