# CVE-2007-5135: Memory corruption in n/a

> Remote attackers might execute arbitrary code via a crafted packet triggering a buffer underflow in OpenSSL's SSL_get_shared_ciphers function.

- **Severity:** Medium 6.8 (`AV:N/AC:M/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:** 27 Sep 2007
- **Updated:** 7 Aug 2024
- **Also known as:** DEBIAN-CVE-2007-5135, DSA-1379-1, GHSA-jvv3-c5fw-96v6

## What is CVE-2007-5135?

CVE-2007-5135 is a medium-severity memory corruption vulnerability in Openssl Openssl, published on 27 Sep 2007. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Off-by-one error in the SSL_get_shared_ciphers function in OpenSSL 0.9.7 up to 0.9.7l, and 0.9.8 up to 0.9.8f, might allow remote attackers to execute arbitrary code via a crafted packet that triggers a one-byte buffer underflow.  NOTE: this issue was introduced as a result of a fix for CVE-2006-3738.  As of 20071012, it is unknown whether code execution is possible.

Weakness: CWE-189

## Which versions are affected by CVE-2007-5135?

It affects 1 product.


Products: Openssl Openssl.

## How do I fix CVE-2007-5135?

Upgrade to a fixed version.

## Is CVE-2007-5135 being exploited?

There is no known exploitation of CVE-2007-5135 in the wild and no public exploit code.

## Other vulnerabilities in Openssl Openssl

- [CVE-2009-3245](https://insights.sbomify.com/CVE-2009-3245/): Null dereference in n/a (critical 10.0)
- [CVE-2006-3738](https://insights.sbomify.com/CVE-2006-3738/): Memory corruption in n/a (critical 10.0)
- [CVE-2026-63073](https://insights.sbomify.com/CVE-2026-63073/): Untrusted Sender DN Used as Format String in CMP Response Validation (critical 9.8)
- [CVE-2016-6309](https://insights.sbomify.com/CVE-2016-6309/): Use after free in n/a (critical 9.8)
- [CVE-2016-0799](https://insights.sbomify.com/CVE-2016-0799/): Integer overflow in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2007-5135 and fix it if it is affected.

What it is: CVE-2007-5135 is a medium-severity memory corruption vulnerability in Openssl Openssl, published on 27 Sep 2007. 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-2007-5135 in the wild and no public exploit code.

Affected product: Openssl Openssl. 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-2007-5135/ (Markdown: https://insights.sbomify.com/CVE-2007-5135/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2007-5135
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2007-5135
- OSV: https://osv.dev/vulnerability/CVE-2007-5135

---
From sbomify Insights: https://insights.sbomify.com/CVE-2007-5135/
Summaries are generated and may contain mistakes; the official description above is the record.