# CVE-2021-29687: Information disclosure in Security Identity Manager

> Remote attackers can enumerate valid usernames in IBM Security Identity Manager by analyzing differences in login response messages.

- **Severity:** Low 3.7 (`CVSS:3.0/A:N/AV:N/I:N/AC:H/C:L/S:U/UI:N/PR:N/E:U/RC:C/RL:O`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 20 May 2021
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-r8w9-96p7-xxh6

## What is CVE-2021-29687?

CVE-2021-29687 is a low-severity vulnerability in IBM Security Identity Manager, published on 20 May 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

IBM Security Identity Manager 7.0.2 could allow a remote user to enumerate usernames due to a difference of responses from valid and invalid login attempts. IBM X-Force ID: 200018

Weakness: CWE-203 (Observable Discrepancy)

## Which versions are affected by CVE-2021-29687?

It affects 1 product.


Products: Ibm Security Identity Manager.

## How do I fix CVE-2021-29687?

No fix has been published for CVE-2021-29687 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-29687 being exploited?

There is no known exploitation of CVE-2021-29687 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-2021-29687 and fix it if it is affected.

What it is: CVE-2021-29687 is a low-severity vulnerability in IBM Security Identity Manager, published on 20 May 2021. 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-2021-29687 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-2021-29687/ (Markdown: https://insights.sbomify.com/CVE-2021-29687/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-29687
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-29687
- OSV: https://osv.dev/vulnerability/CVE-2021-29687

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-29687/
Summaries are generated and may contain mistakes; the official description above is the record.