# CVE-2016-6040: Auth bypass in Rational Collaborative Lifecycle Management

> Authenticated users can hijack sessions of previously logged-in users due to lack of session expiration enforcement in IBM Jazz Foundation.

- **Severity:** Medium 5.0 (`CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L`)
- **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:** 1 Feb 2017
- **Updated:** 6 Aug 2024
- **Also known as:** GHSA-gwpf-pfph-7ff7

## What is CVE-2016-6040?

CVE-2016-6040 is a medium-severity authentication bypass vulnerability in Ibm Rational Collaborative Lifecycle Management, published on 1 Feb 2017. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

IBM Jazz Foundation could allow an authenticated user to take over a previously logged in user due to session expiration not being enforced.

Weakness: CWE-384 (Session Fixation)

## Which versions are affected by CVE-2016-6040?

It affects 1 product.


Products: Ibm Rational Collaborative Lifecycle Management.

## How do I fix CVE-2016-6040?

No fix has been published for CVE-2016-6040 yet. Limit exposure of the affected software until one is available.

## Is CVE-2016-6040 being exploited?

There is no known exploitation of CVE-2016-6040 in the wild and no public exploit code.

## Other vulnerabilities in Ibm Rational Collaborative Lifecycle Management

- [CVE-2014-0862](https://insights.sbomify.com/CVE-2014-0862/): Code injection in n/a (critical 10.0)
- [CVE-2017-1701](https://insights.sbomify.com/CVE-2017-1701/): Weak cryptography in Rational Team Concert (high 8.8)
- [CVE-2016-0326](https://insights.sbomify.com/CVE-2016-0326/): Command injection in n/a (high 8.8)
- [CVE-2016-9707](https://insights.sbomify.com/CVE-2016-9707/): XML external entity in Rational Collaborative Lifecycle Management (high 8.1)
- [CVE-2015-7440](https://insights.sbomify.com/CVE-2015-7440/): Privilege escalation in n/a (high 7.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2016-6040 and fix it if it is affected.

What it is: CVE-2016-6040 is a medium-severity authentication bypass vulnerability in Ibm Rational Collaborative Lifecycle Management, published on 1 Feb 2017. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2016-6040 in the wild and no public exploit code.

Affected product: Ibm Rational Collaborative Lifecycle Management. 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-2016-6040/ (Markdown: https://insights.sbomify.com/CVE-2016-6040/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2016-6040
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2016-6040
- OSV: https://osv.dev/vulnerability/CVE-2016-6040

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From sbomify Insights: https://insights.sbomify.com/CVE-2016-6040/
Summaries are generated and may contain mistakes; the official description above is the record.