# CVE-2007-5086: Denial of service in n/a

> Local attackers can crash Kaspersky antivirus by exploiting improper validation in kernel SSDT hooks, causing a denial of service.

- **Severity:** Low 2.1 (`AV:L/AC:L/Au:N/C:N/I:N/A:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 26 Sep 2007
- **Updated:** 7 Aug 2024
- **Also known as:** GHSA-398g-xgm8-h7c4

## What is CVE-2007-5086?

CVE-2007-5086 is a low-severity denial of service vulnerability in n/a, published on 26 Sep 2007. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Kaspersky Anti-Virus (KAV) and Internet Security 7.0 build 125 do not properly validate certain parameters to System Service Descriptor Table (SSDT) and Shadow SSDT function handlers, which allows local users to cause a denial of service (crash) via the (1) NtUserSendInput, (2) LoadLibraryA, (3) NtOpenProcess, (4) NtOpenThread, (5) NtTerminateProcess, (6) NtUserFindWindowEx, and (7) NtUserBuildHwndList kernel SSDT hooks in kylif.sys; the (8) NtDuplicateObject (DuplicateHandle) kernel SSDT hook; and possibly other kernel SSDT hooks.  NOTE: the NtCreateSection vector is covered by CVE-2007-5043.1.  NOTE: the vendor disputes that the DuplicateHandle vector is a vulnerability in their code, stating that "it is not an error in our code, but an obscure method for manipulating standard Windows routines to circumvent our self-defense mechanisms."

Weakness: CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2007-5086?

It affects 2 products.


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

## How do I fix CVE-2007-5086?

No fix has been published for CVE-2007-5086 yet. Limit exposure of the affected software until one is available.

## Is CVE-2007-5086 being exploited?

There is no known exploitation of CVE-2007-5086 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2007-0445](https://insights.sbomify.com/CVE-2007-0445/): Memory corruption in n/a (critical 10.0)
- [CVE-2007-1112](https://insights.sbomify.com/CVE-2007-1112/): Path traversal in n/a (critical 10.0)
- [CVE-2005-3142](https://insights.sbomify.com/CVE-2005-3142/): Memory corruption in n/a (critical 10.0)
- [CVE-2007-1879](https://insights.sbomify.com/CVE-2007-1879/): Information disclosure in n/a (critical 9.3)
- [CVE-2006-1091](https://insights.sbomify.com/CVE-2006-1091/): Denial of service in n/a (high 7.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2007-5086 and fix it if it is affected.

What it is: CVE-2007-5086 is a low-severity denial of service vulnerability in n/a, published on 26 Sep 2007. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2007-5086 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-2007-5086/ (Markdown: https://insights.sbomify.com/CVE-2007-5086/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2007-5086
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2007-5086
- OSV: https://osv.dev/vulnerability/CVE-2007-5086

---
From sbomify Insights: https://insights.sbomify.com/CVE-2007-5086/
Summaries are generated and may contain mistakes; the official description above is the record.