# CVE-2009-4810: Auth bypass in n/a

> Remote attackers can bypass authentication in Samhain by exploiting a flaw in the Secure Remote Password implementation that fails to check for zero values.

- **Severity:** High 7.5 (`AV:N/AC:L/Au:N/C:P/I:P/A:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 23 Apr 2010
- **Updated:** 17 Sep 2024
- **Also known as:** DEBIAN-CVE-2009-4810, GHSA-jpvc-jx2p-m7rr

## What is CVE-2009-4810?

CVE-2009-4810 is a high-severity authentication bypass vulnerability in n/a, published on 23 Apr 2010. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The Secure Remote Password (SRP) implementation in Samhain before 2.5.4 does not check for a certain zero value where required by the protocol, which allows remote attackers to bypass authentication via crafted input.

Weakness: CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2009-4810?

It affects 1 product.


Products: Samhain Labs Samhain.

## How do I fix CVE-2009-4810?

Upgrade to a fixed version.

## Is CVE-2009-4810 being exploited?

There is no known exploitation of CVE-2009-4810 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2004-2409](https://insights.sbomify.com/CVE-2004-2409/): Memory corruption in n/a (high 7.2)
- [CVE-2004-2410](https://insights.sbomify.com/CVE-2004-2410/): Null dereference in n/a (low 2.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2009-4810 and fix it if it is affected.

What it is: CVE-2009-4810 is a high-severity authentication bypass vulnerability in n/a, published on 23 Apr 2010. 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-2009-4810 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-2009-4810/ (Markdown: https://insights.sbomify.com/CVE-2009-4810/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2009-4810
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2009-4810
- OSV: https://osv.dev/vulnerability/CVE-2009-4810

---
From sbomify Insights: https://insights.sbomify.com/CVE-2009-4810/
Summaries are generated and may contain mistakes; the official description above is the record.