# CVE-2008-2377: Use after free in n/a

> Remote attackers can cause a crash or execute arbitrary code via crafted TLS data due to a use-after-free flaw in GnuTLS.

- **Severity:** High 7.6 (`AV:N/AC:H/Au:N/C:C/I:C/A:C`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 8 Aug 2008
- **Updated:** 7 Aug 2024
- **Also known as:** GHSA-9h4r-gpqc-r78x

## What is CVE-2008-2377?

CVE-2008-2377 is a high-severity use after free vulnerability in Gnu Gnutls, published on 8 Aug 2008. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Use-after-free vulnerability in the _gnutls_handshake_hash_buffers_clear function in lib/gnutls_handshake.c in libgnutls in GnuTLS 2.3.5 through 2.4.0 allows remote attackers to cause a denial of service (crash) or possibly execute arbitrary code via TLS transmission of data that is improperly used when the peer calls gnutls_handshake within a normal session, leading to attempted access to a deallocated libgcrypt handle.

Weakness: CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer)

## Which versions are affected by CVE-2008-2377?

It affects 1 product.


Products: Gnu Gnutls.

## How do I fix CVE-2008-2377?

No fix has been published for CVE-2008-2377 yet. Limit exposure of the affected software until one is available.

## Is CVE-2008-2377 being exploited?

There is no known exploitation of CVE-2008-2377 in the wild and no public exploit code.

## Other vulnerabilities in Gnu Gnutls

- [CVE-2008-1948](https://insights.sbomify.com/CVE-2008-1948/): Memory corruption in n/a (critical 10.0)
- [CVE-2017-5334](https://insights.sbomify.com/CVE-2017-5334/): Use after free in n/a (critical 9.8)
- [CVE-2017-5336](https://insights.sbomify.com/CVE-2017-5336/): Memory corruption in n/a (critical 9.8)
- [CVE-2017-5337](https://insights.sbomify.com/CVE-2017-5337/): Memory corruption in n/a (critical 9.8)
- [CVE-2008-1949](https://insights.sbomify.com/CVE-2008-1949/): Null dereference in n/a (critical 9.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2008-2377 and fix it if it is affected.

What it is: CVE-2008-2377 is a high-severity use after free vulnerability in Gnu Gnutls, published on 8 Aug 2008. 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-2008-2377 in the wild and no public exploit code.

Affected product: Gnu Gnutls. 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-2008-2377/ (Markdown: https://insights.sbomify.com/CVE-2008-2377/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2008-2377
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2008-2377
- OSV: https://osv.dev/vulnerability/CVE-2008-2377

---
From sbomify Insights: https://insights.sbomify.com/CVE-2008-2377/
Summaries are generated and may contain mistakes; the official description above is the record.