# CVE-2011-0920: Auth bypass in n/a

> Remote attackers can bypass authentication and execute arbitrary code in IBM Lotus Domino Remote Console when using an unsupported UNC share configuration.

- **Severity:** Critical 9.3 (`AV:N/AC:M/Au:N/C:C/I:C/A:C`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 8 Feb 2011
- **Updated:** 17 Sep 2024
- **Also known as:** GHSA-hf78-8m34-fwxp

## What is CVE-2011-0920?

CVE-2011-0920 is a critical authentication bypass vulnerability in Ibm Lotus Domino, published on 8 Feb 2011. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The Remote Console in IBM Lotus Domino, when a certain unsupported configuration involving UNC share pathnames is used, allows remote attackers to bypass authentication and execute arbitrary code via unspecified vectors, aka SPR PRAD89WGRS.

Weakness: CWE-287 (Improper Authentication)

## Which versions are affected by CVE-2011-0920?

It affects 1 product.


Products: Ibm Lotus Domino.

## How do I fix CVE-2011-0920?

No fix has been published for CVE-2011-0920 yet. Limit exposure of the affected software until one is available.

## Is CVE-2011-0920 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2011-0920 exists.

Public exploit code:

- IBM Lotus Domino Server Controller - Authentication Bypass (exploitdb)

## Other vulnerabilities in Ibm Lotus Domino

- [CVE-2011-1519](https://insights.sbomify.com/CVE-2011-1519/): Auth bypass in n/a (critical 10.0)
- [CVE-2011-0913](https://insights.sbomify.com/CVE-2011-0913/): Memory corruption in n/a (critical 10.0)
- [CVE-2011-0914](https://insights.sbomify.com/CVE-2011-0914/): Integer overflow in n/a (critical 10.0)
- [CVE-2011-0915](https://insights.sbomify.com/CVE-2011-0915/): Memory corruption in n/a (critical 10.0)
- [CVE-2011-0916](https://insights.sbomify.com/CVE-2011-0916/): Memory corruption in n/a (critical 10.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2011-0920 and fix it if it is affected.

What it is: CVE-2011-0920 is a critical authentication bypass vulnerability in Ibm Lotus Domino, published on 8 Feb 2011. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2011-0920 exists.

Affected product: Ibm Lotus Domino. 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-2011-0920/ (Markdown: https://insights.sbomify.com/CVE-2011-0920/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2011-0920
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2011-0920
- OSV: https://osv.dev/vulnerability/CVE-2011-0920

---
From sbomify Insights: https://insights.sbomify.com/CVE-2011-0920/
Summaries are generated and may contain mistakes; the official description above is the record.