# CVE-2020-15824: Privilege escalation in n/a

> A local attacker can escalate privileges by exploiting shared script caches in the system temp directory within the Kotlin compiler.

- **Severity:** High 8.8 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 8 Aug 2020
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-vhcp-vwq7-69fw, UBUNTU-CVE-2020-15824

## What is CVE-2020-15824?

CVE-2020-15824 is a high-severity vulnerability in Oracle Communications Cloud Native Core Policy, published on 8 Aug 2020. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

In JetBrains Kotlin from 1.4-M1 to 1.4-RC (as Kotlin 1.3.7x is not affected by the issue. Fixed version is 1.4.0) there is a script-cache privilege escalation vulnerability due to kotlin-main-kts cached scripts in the system temp directory, which is shared by all users by default.

Weakness: CWE-269 (Improper Privilege Management)

## Which versions are affected by CVE-2020-15824?

It affects 3 products.


Products: Jetbrains Kotlin, Oracle Banking Extensibility Workbench, Oracle Communications Cloud Native Core Policy.

## How do I fix CVE-2020-15824?

No fix has been published for CVE-2020-15824 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-15824 being exploited?

There is no known exploitation of CVE-2020-15824 in the wild and no public exploit code.

## Other vulnerabilities in Oracle Communications Cloud Native Core Policy

- [CVE-2019-10101](https://insights.sbomify.com/CVE-2019-10101/): Other in n/a (high 8.1)
- [CVE-2019-10102](https://insights.sbomify.com/CVE-2019-10102/): Supply chain in n/a (high 8.1)
- [CVE-2019-10103](https://insights.sbomify.com/CVE-2019-10103/): Other in n/a (high 8.1)
- [CVE-2026-53914](https://insights.sbomify.com/CVE-2026-53914/): JetBrains Kotlin: Unsafe Deserialization in Kotlin Build Cache Enables Code Execution (medium 6.7)
- [CVE-2022-24329](https://insights.sbomify.com/CVE-2022-24329/): Improper Locking in JetBrains Kotlin (medium 5.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-15824 and fix it if it is affected.

What it is: CVE-2020-15824 is a high-severity vulnerability in Oracle Communications Cloud Native Core Policy, published on 8 Aug 2020. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2020-15824 in the wild and no public exploit code.

Affected product: Oracle Communications Cloud Native Core Policy. 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-2020-15824/ (Markdown: https://insights.sbomify.com/CVE-2020-15824/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-15824
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-15824
- OSV: https://osv.dev/vulnerability/CVE-2020-15824

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From sbomify Insights: https://insights.sbomify.com/CVE-2020-15824/
Summaries are generated and may contain mistakes; the official description above is the record.