# CVE-2016-0883: Auth bypass in n/a

> Remote attackers can bypass session authentication in PCF Ops Manager by exploiting a shared cookie-encryption key across installations.

- **Severity:** Critical 9.8 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 18 Sep 2016
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-62qc-rw6h-372c

## What is CVE-2016-0883?

CVE-2016-0883 is a critical authentication bypass vulnerability in n/a, published on 18 Sep 2016. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Pivotal Cloud Foundry (PCF) Ops Manager before 1.5.14 and 1.6.x before 1.6.9 uses the same cookie-encryption key across different customers' installations, which allows remote attackers to bypass session authentication by leveraging knowledge of this key from another installation.

Weakness: CWE-287 (Improper Authentication)

## Which versions are affected by CVE-2016-0883?

It affects 1 product.


Products: Pivotal Software Operations Manager.

## How do I fix CVE-2016-0883?

No fix has been published for CVE-2016-0883 yet. Limit exposure of the affected software until one is available.

## Is CVE-2016-0883 being exploited?

There is no known exploitation of CVE-2016-0883 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2016-0897](https://insights.sbomify.com/CVE-2016-0897/): Security feature bypass in n/a (critical 9.8)
- [CVE-2018-15762](https://insights.sbomify.com/CVE-2018-15762/): Pivotal Operations Manager gives all users heightened privileges (critical 9.0)
- [CVE-2019-11292](https://insights.sbomify.com/CVE-2019-11292/): Pivotal Ops Manager logs query parameters in tomcat access file (high 8.8)
- [CVE-2018-11081](https://insights.sbomify.com/CVE-2018-11081/): Pivotal Operations Manager UAA config - temp Ram Disk (high 7.9)
- [CVE-2019-3776](https://insights.sbomify.com/CVE-2019-3776/): Reflected XSS in Pivotal Operations Manager (high 7.2)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2016-0883 and fix it if it is affected.

What it is: CVE-2016-0883 is a critical authentication bypass vulnerability in n/a, published on 18 Sep 2016. 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-2016-0883 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-2016-0883/ (Markdown: https://insights.sbomify.com/CVE-2016-0883/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2016-0883
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2016-0883
- OSV: https://osv.dev/vulnerability/CVE-2016-0883

---
From sbomify Insights: https://insights.sbomify.com/CVE-2016-0883/
Summaries are generated and may contain mistakes; the official description above is the record.