# CVE-2001-1431: Information disclosure in n/a

> Remote attackers can gain sensitive information from Nokia firewalls when SYN Defender is in Active Gateway mode due to improper NAT rewriting.

- **Severity:** Medium 5.0 (`AV:N/AC:L/Au:N/C:P/I:N/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:** 24 Mar 2005
- **Updated:** 8 Aug 2024
- **Also known as:** GHSA-wcw3-c4wg-3jxf

## What is CVE-2001-1431?

CVE-2001-1431 is a medium-severity vulnerability in n/a, published on 24 Mar 2005. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Nokia Firewall Appliances running IPSO 3.3 and VPN-1/FireWall-1 4.1 Service Pack 3, IPSO 3.4 and VPN-1/FireWall-1 4.1 Service Pack 4, and IPSO 3.4 or IPSO 3.4.1 and VPN-1/FireWall-1 4.1 Service Pack 5, when SYN Defender is configured in Active Gateway mode, does not properly rewrite the third packet of a TCP three-way handshake to use the NAT IP address, which allows remote attackers to gain sensitive information.

## Which versions are affected by CVE-2001-1431?

It affects 3 products.


Products: Checkpoint Firewall-1, Checkpoint Vpn-1, Nokia Firewall Appliance.

## How do I fix CVE-2001-1431?

No fix has been published for CVE-2001-1431 yet. Limit exposure of the affected software until one is available.

## Is CVE-2001-1431 being exploited?

There is no known exploitation of CVE-2001-1431 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2004-0040](https://insights.sbomify.com/CVE-2004-0040/): Memory corruption in n/a (critical 10.0)
- [CVE-2004-0469](https://insights.sbomify.com/CVE-2004-0469/): Memory corruption in n/a (critical 10.0)
- [CVE-2004-0039](https://insights.sbomify.com/CVE-2004-0039/): Code injection in n/a (critical 10.0)
- [CVE-2004-2679](https://insights.sbomify.com/CVE-2004-2679/): Information disclosure in n/a (high 7.8)
- [CVE-2004-0699](https://insights.sbomify.com/CVE-2004-0699/): Memory corruption in n/a (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2001-1431 and fix it if it is affected.

What it is: CVE-2001-1431 is a medium-severity vulnerability in n/a, published on 24 Mar 2005. 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-2001-1431 in the wild and no public exploit code.

Affected product: n/a. 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-2001-1431/ (Markdown: https://insights.sbomify.com/CVE-2001-1431/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2001-1431
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2001-1431
- OSV: https://osv.dev/vulnerability/CVE-2001-1431

---
From sbomify Insights: https://insights.sbomify.com/CVE-2001-1431/
Summaries are generated and may contain mistakes; the official description above is the record.