# CVE-2009-2966: Denial of service in n/a

> Remote attackers can cause denial of service in Kaspersky Internet Security via HTTP requests with excessive dots, leading to CPU exhaustion and network loss.

- **Severity:** Medium 4.3 (`AV:N/AC:M/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:** 25 Aug 2009
- **Updated:** 7 Aug 2024
- **Also known as:** GHSA-8fc7-mgr4-r5h3

## What is CVE-2009-2966?

CVE-2009-2966 is a medium-severity denial of service vulnerability in n/a, published on 25 Aug 2009. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

avp.exe in Kaspersky Internet Security 9.0.0.459 and Anti-Virus 9.0.0.463 allows remote attackers to cause a denial of service (CPU consumption and network connectivity loss) via an HTTP URL request that contains a large number of dot "." characters.

Weakness: CWE-399

## Which versions are affected by CVE-2009-2966?

It affects 2 products.


Products: Kaspersky Kaspersky Anti-Virus, Kaspersky Kaspersky Internet Security.

## How do I fix CVE-2009-2966?

No fix has been published for CVE-2009-2966 yet. Limit exposure of the affected software until one is available.

## Is CVE-2009-2966 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2009-2966 exists.

Public exploit code:

- Kaspersky 2010 - Remote Memory Corruption / Denial of Service (PoC) (exploitdb)

## Other vulnerabilities in n/a

- [CVE-2001-0789](https://insights.sbomify.com/CVE-2001-0789/): Memory corruption in n/a (critical 10.0)
- [CVE-2009-2647](https://insights.sbomify.com/CVE-2009-2647/): Denial of service in n/a (medium 5.0)
- [CVE-2006-3074](https://insights.sbomify.com/CVE-2006-3074/): Denial of service in n/a (medium 5.0)
- [CVE-2009-4114](https://insights.sbomify.com/CVE-2009-4114/): Memory corruption in n/a (medium 4.9)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2009-2966 and fix it if it is affected.

What it is: CVE-2009-2966 is a medium-severity denial of service vulnerability in n/a, published on 25 Aug 2009. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2009-2966 exists.

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-2009-2966/ (Markdown: https://insights.sbomify.com/CVE-2009-2966/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2009-2966
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2009-2966
- OSV: https://osv.dev/vulnerability/CVE-2009-2966

---
From sbomify Insights: https://insights.sbomify.com/CVE-2009-2966/
Summaries are generated and may contain mistakes; the official description above is the record.