# CVE-2007-5901: Use after free in n/a

> A use-after-free vulnerability in MIT Kerberos 5's gss_indicate_mechs function may allow attackers to cause undefined behavior or crashes.

- **Severity:** Medium 6.9 (`AV:L/AC:M/Au:N/C:C/I:C/A:C`)
- **Exploited in the wild:** Not known
- **Login needed:** Not stated
- **Attackable:** Not stated
- **Victim action needed:** Not stated
- **Fix available:** Yes
- **Published:** 6 Dec 2007
- **Updated:** 7 Aug 2024
- **Also known as:** DEBIAN-CVE-2007-5901, GHSA-qxh5-j4mp-pchg

## What is CVE-2007-5901?

CVE-2007-5901 is a medium-severity use after free vulnerability in Mit Kerberos 5, published on 6 Dec 2007. 

### Official description

Use-after-free vulnerability in the gss_indicate_mechs function in lib/gssapi/mechglue/g_initialize.c in MIT Kerberos 5 (krb5) has unknown impact and attack vectors.  NOTE: this might be the result of a typo in the source code.

Weakness: CWE-399

## Which versions are affected by CVE-2007-5901?

It affects 1 product.


Products: Mit Kerberos 5.

## How do I fix CVE-2007-5901?

Apply the vendor's patch.

## Is CVE-2007-5901 being exploited?

There is no known exploitation of CVE-2007-5901 in the wild and no public exploit code.

## Other vulnerabilities in Mit Kerberos 5

- [CVE-2011-0285](https://insights.sbomify.com/CVE-2011-0285/): Use after free in n/a (critical 10.0)
- [CVE-2008-0947](https://insights.sbomify.com/CVE-2008-0947/): Memory corruption in n/a (critical 10.0)
- [CVE-2007-5902](https://insights.sbomify.com/CVE-2007-5902/): Integer overflow in n/a (critical 10.0)
- [CVE-2007-4743](https://insights.sbomify.com/CVE-2007-4743/): Memory corruption in n/a (critical 10.0)
- [CVE-2007-3999](https://insights.sbomify.com/CVE-2007-3999/): Memory corruption in n/a (critical 10.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2007-5901 and fix it if it is affected.

What it is: CVE-2007-5901 is a medium-severity use after free vulnerability in Mit Kerberos 5, published on 6 Dec 2007. 
Exploitation: There is no known exploitation of CVE-2007-5901 in the wild and no public exploit code.

Affected product: Mit Kerberos 5. 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-2007-5901/ (Markdown: https://insights.sbomify.com/CVE-2007-5901/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2007-5901
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2007-5901
- OSV: https://osv.dev/vulnerability/CVE-2007-5901

---
From sbomify Insights: https://insights.sbomify.com/CVE-2007-5901/
Summaries are generated and may contain mistakes; the official description above is the record.