# CVE-2017-10819: Weak cryptography in MaLion for Mac

> Attackers can eavesdrop on encrypted communications due to improper certificate validation in MaLion for Mac.

- **Severity:** Medium 5.9 (`CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 4 Aug 2017
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-vrhj-mrvh-x542

## What is CVE-2017-10819?

CVE-2017-10819 is a medium-severity vulnerability in Intercom, Inc. MaLion for Mac, published on 4 Aug 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

MaLion for Mac 4.3.0 to 5.2.1 does not properly validate certificates, which may allow an attacker to eavesdrop on an encrypted communication.

Weakness: CWE-295 (Improper Certificate Validation)

## Which versions are affected by CVE-2017-10819?

It affects 1 product.


Products: Intercom Malion.

## How do I fix CVE-2017-10819?

No fix has been published for CVE-2017-10819 yet. Limit exposure of the affected software until one is available.

## Is CVE-2017-10819 being exploited?

There is no known exploitation of CVE-2017-10819 in the wild and no public exploit code.

## Other vulnerabilities in Intercom, Inc. MaLion for Mac

- [CVE-2017-10816](https://insights.sbomify.com/CVE-2017-10816/): SQL injection in MaLion for Windows and Mac (critical 9.8)
- [CVE-2017-10817](https://insights.sbomify.com/CVE-2017-10817/): Auth bypass in MaLion for Windows and Mac (critical 9.8)
- [CVE-2017-10818](https://insights.sbomify.com/CVE-2017-10818/): Hardcoded credentials in MaLion for Windows and Mac (critical 9.8)
- [CVE-2017-10815](https://insights.sbomify.com/CVE-2017-10815/): Auth bypass in MaLion for Mac (high 8.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2017-10819 and fix it if it is affected.

What it is: CVE-2017-10819 is a medium-severity vulnerability in Intercom, Inc. MaLion for Mac, published on 4 Aug 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2017-10819 in the wild and no public exploit code.

Affected product: Intercom, Inc. MaLion for Mac. 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-2017-10819/ (Markdown: https://insights.sbomify.com/CVE-2017-10819/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2017-10819
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-10819
- OSV: https://osv.dev/vulnerability/CVE-2017-10819

---
From sbomify Insights: https://insights.sbomify.com/CVE-2017-10819/
Summaries are generated and may contain mistakes; the official description above is the record.