# CVE-2002-0852: Memory corruption in n/a

> Remote attackers can cause a denial of service in Cisco VPN Client via malformed IKE packets exploiting buffer overflows.

- **Severity:** Medium 5.0 (`AV:N/AC:L/Au:N/C:N/I:N/A:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 14 Aug 2002
- **Updated:** 8 Aug 2024
- **Also known as:** GHSA-6x9q-xfp2-gxg6

## What is CVE-2002-0852?

CVE-2002-0852 is a medium-severity memory corruption vulnerability in n/a, published on 14 Aug 2002. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Buffer overflows in Cisco Virtual Private Network (VPN) Client 3.5.4 and earlier allows remote attackers to cause a denial of service via (1) an Internet Key Exchange (IKE) with a large Security Parameter Index (SPI) payload, or (2) an IKE packet with a large number of valid payloads.

## Which versions are affected by CVE-2002-0852?

It affects 1 product.


Products: Cisco Vpn Client.

## How do I fix CVE-2002-0852?

No fix has been published for CVE-2002-0852 yet. Limit exposure of the affected software until one is available.

## Is CVE-2002-0852 being exploited?

There is no known exploitation of CVE-2002-0852 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2002-1106](https://insights.sbomify.com/CVE-2002-1106/): Security feature bypass in n/a (high 7.5)
- [CVE-2002-1107](https://insights.sbomify.com/CVE-2002-1107/): Weak cryptography in n/a (high 7.5)
- [CVE-2015-7600](https://insights.sbomify.com/CVE-2015-7600/): Privilege escalation in n/a (high 7.2)
- [CVE-2006-2679](https://insights.sbomify.com/CVE-2006-2679/): Privilege escalation in n/a (high 7.2)
- [CVE-2002-1447](https://insights.sbomify.com/CVE-2002-1447/): Memory corruption in n/a (high 7.2)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2002-0852 and fix it if it is affected.

What it is: CVE-2002-0852 is a medium-severity memory corruption vulnerability in n/a, published on 14 Aug 2002. 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-2002-0852 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-2002-0852/ (Markdown: https://insights.sbomify.com/CVE-2002-0852/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2002-0852
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2002-0852
- OSV: https://osv.dev/vulnerability/CVE-2002-0852

---
From sbomify Insights: https://insights.sbomify.com/CVE-2002-0852/
Summaries are generated and may contain mistakes; the official description above is the record.