# CVE-2016-1335: Privilege escalation in n/a

> Authenticated users can gain administrator privileges by connecting from an endpoint previously used by an admin due to SSH mishandling.

- **Severity:** High 7.5 (`CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 19 Feb 2016
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-8vpj-6xx8-gx4p

## What is CVE-2016-1335?

CVE-2016-1335 is a high-severity vulnerability in n/a, published on 19 Feb 2016. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

The SSH implementation in Cisco StarOS before 19.3.M0.62771 and 20.x before 20.0.M0.62768 on ASR 5000 devices mishandles a multi-user public-key authentication configuration, which allows remote authenticated users to gain privileges by establishing a connection from an endpoint that was previously used for an administrator's connection, aka Bug ID CSCux22492.

Weakness: CWE-264

## Which versions are affected by CVE-2016-1335?

It affects 1 product.


Products: Cisco Asr 5000 Series Software.

## How do I fix CVE-2016-1335?

No fix has been published for CVE-2016-1335 yet. Limit exposure of the affected software until one is available.

## Is CVE-2016-1335 being exploited?

There is no known exploitation of CVE-2016-1335 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2017-3819](https://insights.sbomify.com/CVE-2017-3819/): Privilege escalation in Cisco StarOS (high 8.8)
- [CVE-2017-6612](https://insights.sbomify.com/CVE-2017-6612/): Open redirect in Cisco ASR 5000 Series Aggregation Services Routers (high 8.6)
- [CVE-2017-6672](https://insights.sbomify.com/CVE-2017-6672/): Security feature bypass in Cisco ASR 5000 Series Aggregation Services Routers (high 7.5)
- [CVE-2016-6467](https://insights.sbomify.com/CVE-2016-6467/): Denial of service in Cisco Aggregation Services Router (ASR) 5000 Series Switch (high 7.5)
- [CVE-2016-9203](https://insights.sbomify.com/CVE-2016-9203/): Denial of service in Cisco ASR 5000 (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2016-1335 and fix it if it is affected.

What it is: CVE-2016-1335 is a high-severity vulnerability in n/a, published on 19 Feb 2016. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2016-1335 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-2016-1335/ (Markdown: https://insights.sbomify.com/CVE-2016-1335/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2016-1335
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2016-1335
- OSV: https://osv.dev/vulnerability/CVE-2016-1335

---
From sbomify Insights: https://insights.sbomify.com/CVE-2016-1335/
Summaries are generated and may contain mistakes; the official description above is the record.