# CVE-2022-21950: canna: unsafe handling of /tmp/.iroha_unix directory

> Local attackers can hijack the UNIX domain socket due to improper access control on the /tmp/.iroha_unix directory in the canna service.

- **Severity:** Medium 5.3 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 7 Sep 2022
- **Updated:** 17 Sep 2024
- **Also known as:** GHSA-3485-7x7c-qrw2, MGASA-2022-0306, openSUSE-SU-2022:10090-1, openSUSE-SU-2022:10091-1

## What is CVE-2022-21950?

CVE-2022-21950 is a medium-severity missing authorization vulnerability in openSUSE Backports SLE-15-SP3, published on 7 Sep 2022. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

A Improper Access Control vulnerability in the systemd service of cana in openSUSE Backports SLE-15-SP3, openSUSE Backports SLE-15-SP4 allows local users to hijack the UNIX domain socket This issue affects: openSUSE Backports SLE-15-SP3 canna versions prior to canna-3.7p3-bp153.2.3.1. openSUSE Backports SLE-15-SP4 canna versions prior to 3.7p3-bp154.3.3.1. openSUSE Factory was also affected. Instead of fixing the package it was deleted there.

Weakness: CWE-284 (Improper Access Control)

## Which versions are affected by CVE-2022-21950?

It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `canna` | SUSE:Package Hub 15 SP3 | All versions | 3.7p3-bp153.2.3.1 |
| `canna` | SUSE:Package Hub 15 SP4 | All versions | 3.7p3-bp154.3.3.1 |
| `canna` | openSUSE:Leap 15.3 | All versions | 3.7p3-bp153.2.3.1 |
| `canna` | openSUSE:Leap 15.4 | All versions | 3.7p3-bp154.3.3.1 |

Products: Opensuse Canna.

## How do I fix CVE-2022-21950?

Apply the vendor's patch.

## Is CVE-2022-21950 being exploited?

There is no known exploitation of CVE-2022-21950 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-21950 and fix it if it is affected.

What it is: CVE-2022-21950 is a medium-severity missing authorization vulnerability in openSUSE Backports SLE-15-SP3, published on 7 Sep 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2022-21950 in the wild and no public exploit code.

Affected product: openSUSE Backports SLE-15-SP3. 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-2022-21950/ (Markdown: https://insights.sbomify.com/CVE-2022-21950/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-21950
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-21950
- OSV: https://osv.dev/vulnerability/CVE-2022-21950

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-21950/
Summaries are generated and may contain mistakes; the official description above is the record.