# CVE-2021-45977: Misconfiguration in n/a

> JetBrains IDEs bind to all network interfaces, exposing remote development services to the local network and potentially allowing unauthorized access.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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:** 25 Feb 2022
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-pvh2-w6q4-6hqm

## What is CVE-2021-45977?

CVE-2021-45977 is a critical vulnerability in Jetbrains Intellij Idea, published on 25 Feb 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

JetBrains IntelliJ IDEA 2021.3.1 Preview, IntelliJ IDEA 2021.3.1 RC, PyCharm Professional 2021.3.1 RC, GoLand 2021.3.1, PhpStorm 2021.3.1 Preview, PhpStorm 2021.3.1 RC, RubyMine 2021.3.1 Preview, RubyMine 2021.3.1 RC, CLion 2021.3.1, WebStorm 2021.3.1 Preview, and WebStorm 2021.3.1 RC (used as Remote Development backend IDEs) bind to the 0.0.0.0 IP address. The fixed versions are: IntelliJ IDEA 2021.3.1, PyCharm Professional 2021.3.1, GoLand 2021.3.2, PhpStorm 2021.3.1 (213.6461.83), RubyMine 2021.3.1, CLion 2021.3.2, and WebStorm 2021.3.1.

## Which versions are affected by CVE-2021-45977?

It affects 7 products.


Products: Jetbrains Clion, Jetbrains Goland, Jetbrains Intellij Idea, Jetbrains Phpstorm, Jetbrains Pycharm, Jetbrains Rubymine, Jetbrains Webstorm.

## How do I fix CVE-2021-45977?

No fix has been published for CVE-2021-45977 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-45977 being exploited?

There is no known exploitation of CVE-2021-45977 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-45977 and fix it if it is affected.

What it is: CVE-2021-45977 is a critical vulnerability in Jetbrains Intellij Idea, published on 25 Feb 2022. 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-2021-45977 in the wild and no public exploit code.

Affected product: Jetbrains Intellij Idea. 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-2021-45977/ (Markdown: https://insights.sbomify.com/CVE-2021-45977/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-45977
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-45977
- OSV: https://osv.dev/vulnerability/CVE-2021-45977

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-45977/
Summaries are generated and may contain mistakes; the official description above is the record.