# CVE-2023-1656: Information disclosure in OpenIDM and Java Remote Connector Server (RCS)

> Attackers can steal LDAP credentials transmitted in cleartext before TLS is established, leading to unauthorized access to identity management systems.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 29 Mar 2023
- **Updated:** 14 Apr 2025
- **Also known as:** GHSA-3452-rvwh-rv7h

## What is CVE-2023-1656?

CVE-2023-1656 is a high-severity vulnerability in ForgeRock Inc. OpenIDM and Java Remote Connector Server (RCS), published on 29 Mar 2023. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

Cleartext Transmission of Sensitive Information vulnerability in ForgeRock Inc. OpenIDM and Java Remote Connector Server (RCS) LDAP Connector on Windows, MacOS, Linux allows Remote Services with Stolen Credentials.This issue affects OpenIDM and Java Remote Connector Server (RCS): from 1.5.20.9 through 1.5.20.13.

Weakness: CWE-319 (Cleartext Transmission of Sensitive Information)

## Which versions are affected by CVE-2023-1656?

It affects 1 product.


Products: Forgerock Ldap Connector.

## How do I fix CVE-2023-1656?

No fix has been published for CVE-2023-1656 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-1656 being exploited?

There is no known exploitation of CVE-2023-1656 in the wild and no public exploit code.

## Other vulnerabilities in ForgeRock Inc. OpenIDM and Java Remote Connector Server (RCS)

- [CVE-2022-0143](https://insights.sbomify.com/CVE-2022-0143/): LDAP Connector: When startTLS is used then LDAP connector ignores the wrong password (critical 9.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-1656 and fix it if it is affected.

What it is: CVE-2023-1656 is a high-severity vulnerability in ForgeRock Inc. OpenIDM and Java Remote Connector Server (RCS), published on 29 Mar 2023. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2023-1656 in the wild and no public exploit code.

Affected product: ForgeRock Inc. OpenIDM and Java Remote Connector Server (RCS). 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-2023-1656/ (Markdown: https://insights.sbomify.com/CVE-2023-1656/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-1656
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-1656
- OSV: https://osv.dev/vulnerability/CVE-2023-1656

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-1656/
Summaries are generated and may contain mistakes; the official description above is the record.