# CVE-2021-29827: IBM InfoSphere Information Server clickjacking

> Remote attackers can hijack user clicks via malicious sites, potentially launching further attacks against IBM InfoSphere Information Server users.

- **Severity:** Medium 5.2 (`CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 18 Dec 2024
- **Updated:** 19 Dec 2024
- **Also known as:** GHSA-5w3w-7p48-725j

## What is CVE-2021-29827?

CVE-2021-29827 is a medium-severity vulnerability in Ibm Infosphere Information Server, published on 18 Dec 2024. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official description

IBM InfoSphere Information Server 11.7 could allow a remote attacker to hijack the clicking action of the victim. By persuading a victim to visit a malicious Web site, a remote attacker could exploit this vulnerability to hijack the victim's click actions and possibly launch further attacks against the victim.

Weakness: CWE-1021 (Improper Restriction of Rendered UI Layers or Frames)

## Which versions are affected by CVE-2021-29827?

It affects 1 product.


Products: Ibm Infosphere Information Server.

## How do I fix CVE-2021-29827?

No fix has been published for CVE-2021-29827 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-29827 being exploited?

There is no known exploitation of CVE-2021-29827 in the wild and no public exploit code.

## Other vulnerabilities in Ibm Infosphere Information Server

- [CVE-2009-4240](https://insights.sbomify.com/CVE-2009-4240/): Memory corruption in n/a (critical 10.0)
- [CVE-2022-40752](https://insights.sbomify.com/CVE-2022-40752/): Command injection in InfoSphere DataStage (critical 9.8)
- [CVE-2022-22425](https://insights.sbomify.com/CVE-2022-22425/): Code injection in IBM InfoSphere Information Server (critical 9.8)
- [CVE-2020-27583](https://insights.sbomify.com/CVE-2020-27583/): Deserialization in n/a (critical 9.8)
- [CVE-2022-40747](https://insights.sbomify.com/CVE-2022-40747/): XML external entity in IBM InfoSphere Information Server (critical 9.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-29827 and fix it if it is affected.

What it is: CVE-2021-29827 is a medium-severity vulnerability in Ibm Infosphere Information Server, published on 18 Dec 2024. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2021-29827 in the wild and no public exploit code.

Affected product: Ibm Infosphere Information Server. 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-2021-29827/ (Markdown: https://insights.sbomify.com/CVE-2021-29827/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-29827
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-29827
- OSV: https://osv.dev/vulnerability/CVE-2021-29827

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-29827/
Summaries are generated and may contain mistakes; the official description above is the record.