# CVE-2019-18373: Security feature bypass in Norton AppLock

> Attackers can bypass the application lock feature to access protected apps on the device without authentication.

- **Severity:** Medium 5.6 (`CVSS:3.1/AV:P/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 18 Nov 2019
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-v5q9-m5vf-rjm9

## What is CVE-2019-18373?

CVE-2019-18373 is a medium-severity vulnerability in Symantec Norton AppLock, published on 18 Nov 2019. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official description

Norton App Lock, prior to 1.4.0.503, may be susceptible to a bypass exploit. In this type of circumstance, the exploit can allow the user to circumvent the app to prevent it from locking other apps on the device, thereby allowing the individual to gain access.

## Which versions are affected by CVE-2019-18373?

It affects 1 product.


Products: Symantec Norton App Lock.

## How do I fix CVE-2019-18373?

No fix has been published for CVE-2019-18373 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-18373 being exploited?

There is no known exploitation of CVE-2019-18373 in the wild and no public exploit code.

## Other vulnerabilities in Symantec Norton AppLock

- [CVE-2016-6591](https://insights.sbomify.com/CVE-2016-6591/): Security feature bypass in Norton App Lock (high 7.1)
- [CVE-2017-15534](https://insights.sbomify.com/CVE-2017-15534/): Auth bypass in Norton App Lock (medium 6.7)
- [CVE-2018-18363](https://insights.sbomify.com/CVE-2018-18363/): Security feature bypass in Norton App Lock (medium 6.2)
- [CVE-2018-5239](https://insights.sbomify.com/CVE-2018-5239/): Security feature bypass in Norton App Lock (medium 6.2)
- [CVE-2018-5242](https://insights.sbomify.com/CVE-2018-5242/): Security feature bypass in Norton App Lock (medium 6.2)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-18373 and fix it if it is affected.

What it is: CVE-2019-18373 is a medium-severity vulnerability in Symantec Norton AppLock, published on 18 Nov 2019. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2019-18373 in the wild and no public exploit code.

Affected product: Symantec Norton AppLock. 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-2019-18373/ (Markdown: https://insights.sbomify.com/CVE-2019-18373/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-18373
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-18373
- OSV: https://osv.dev/vulnerability/CVE-2019-18373

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-18373/
Summaries are generated and may contain mistakes; the official description above is the record.