# CVE-2018-1962: Auth bypass in Security Identity Manager

> Attackers with local access can hijack closed browser sessions due to improper session token invalidation upon logout in IBM Security Identity Manager.

- **Severity:** Medium 4.0 (`CVSS:3.0/A:N/AC:L/AV:L/C:L/I:N/PR:N/S:U/UI:N/E:U/RC:C/RL:O`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 4 Feb 2019
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-9v89-7wxp-f5m6

## What is CVE-2018-1962?

CVE-2018-1962 is a medium-severity authentication bypass vulnerability in IBM Security Identity Manager, published on 4 Feb 2019. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

IBM Security Identity Manager 7.0.1 Virtual Appliance does not invalidate session tokens when the logout button is pressed. The lack of proper session termination may allow attackers with local access to login into a closed browser session. IBM X-Force ID: 153658.

Weakness: CWE-384 (Session Fixation)

## Which versions are affected by CVE-2018-1962?

It affects 1 product.


Products: Ibm Security Identity Manager.

## How do I fix CVE-2018-1962?

No fix has been published for CVE-2018-1962 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-1962 being exploited?

There is no known exploitation of CVE-2018-1962 in the wild and no public exploit code.

## Other vulnerabilities in IBM Security Identity Manager

- [CVE-2018-1969](https://insights.sbomify.com/CVE-2018-1969/): File upload in Security Identity Manager (critical 9.0)
- [CVE-2018-1453](https://insights.sbomify.com/CVE-2018-1453/): File upload in Security Identity Manager (high 8.8)
- [CVE-2016-0335](https://insights.sbomify.com/CVE-2016-0335/): Cross-site request forgery in n/a (high 8.8)
- [CVE-2014-6106](https://insights.sbomify.com/CVE-2014-6106/): Cross-site request forgery in n/a (high 8.8)
- [CVE-2019-4561](https://insights.sbomify.com/CVE-2019-4561/): Deserialization in Security Identity Manager (high 8.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-1962 and fix it if it is affected.

What it is: CVE-2018-1962 is a medium-severity authentication bypass vulnerability in IBM Security Identity Manager, published on 4 Feb 2019. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2018-1962 in the wild and no public exploit code.

Affected product: IBM Security Identity Manager. 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-2018-1962/ (Markdown: https://insights.sbomify.com/CVE-2018-1962/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-1962
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-1962
- OSV: https://osv.dev/vulnerability/CVE-2018-1962

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-1962/
Summaries are generated and may contain mistakes; the official description above is the record.