# CVE-2021-34369: Information disclosure in n/a

> Remote attackers can obtain sensitive information by modifying contactSeqNumber values in Accela Civic Platform, though the vendor disputes the severity.

- **Severity:** Medium 6.5 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N`)
- **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:** 9 Jun 2021
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-vf96-5gw2-gvj4

## What is CVE-2021-34369?

CVE-2021-34369 is a medium-severity vulnerability in n/a, published on 9 Jun 2021. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

portlets/contact/ref/refContactDetail.do in Accela Civic Platform through 20.1 allows remote attackers to obtain sensitive information via a modified contactSeqNumber value. NOTE: the vendor states "the information that is being queried is authorized for an authenticated user of that application, so we consider this not applicable.

## Which versions are affected by CVE-2021-34369?

It affects 1 product.


Products: Accela Civic Platform.

## How do I fix CVE-2021-34369?

No fix has been published for CVE-2021-34369 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-34369 being exploited?

There is no known exploitation of CVE-2021-34369 in the wild and no public exploit code.

Public exploit code:

- Accela Civic Platform 21.1 - 'contactSeqNumber' Insecure Direct Object References (IDOR) (exploitdb)

## Other vulnerabilities in n/a

- [CVE-2021-34370](https://insights.sbomify.com/CVE-2021-34370/): Cross-site scripting in n/a (medium 6.1)
- [CVE-2021-33904](https://insights.sbomify.com/CVE-2021-33904/): Cross-site scripting in n/a (medium 6.1)
- [CVE-2016-5660](https://insights.sbomify.com/CVE-2016-5660/): Cross-site scripting in n/a (medium 6.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-34369 and fix it if it is affected.

What it is: CVE-2021-34369 is a medium-severity vulnerability in n/a, published on 9 Jun 2021. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2021-34369 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-2021-34369/ (Markdown: https://insights.sbomify.com/CVE-2021-34369/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-34369
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-34369
- OSV: https://osv.dev/vulnerability/CVE-2021-34369

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-34369/
Summaries are generated and may contain mistakes; the official description above is the record.