# CVE-2021-30356: Path traversal in Check Point Identity Agent

> Low-privileged users can overwrite protected system files, causing denial of service and potential privilege escalation in Check Point Identity Agent.

- **Severity:** High 8.1 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/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:** 22 Apr 2021
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-2v49-2q3c-3x2g

## What is CVE-2021-30356?

CVE-2021-30356 is a high-severity path traversal vulnerability in Check Point Identity Agent, published on 22 Apr 2021. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A denial of service vulnerability was reported in Check Point Identity Agent before R81.018.0000, which could allow low privileged users to overwrite protected system files.

Weakness: CWE-59 (Improper Link Resolution Before File Access)

## Which versions are affected by CVE-2021-30356?

It affects 1 product.


Products: Checkpoint Identity Agent.

## How do I fix CVE-2021-30356?

No fix has been published for CVE-2021-30356 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-30356 being exploited?

There is no known exploitation of CVE-2021-30356 in the wild and no public exploit code.

## Other vulnerabilities in Check Point Identity Agent

- [CVE-2024-24910](https://insights.sbomify.com/CVE-2024-24910/): Privilege escalation in ZoneAlarmExtremeSecurityNextGen,IdentityAgentforWindows,IdentityAgentforWindowsTerminalServer (high 7.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-30356 and fix it if it is affected.

What it is: CVE-2021-30356 is a high-severity path traversal vulnerability in Check Point Identity Agent, published on 22 Apr 2021. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2021-30356 in the wild and no public exploit code.

Affected product: Check Point Identity Agent. 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-2021-30356/ (Markdown: https://insights.sbomify.com/CVE-2021-30356/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-30356
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-30356
- OSV: https://osv.dev/vulnerability/CVE-2021-30356

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-30356/
Summaries are generated and may contain mistakes; the official description above is the record.