# CVE-2019-13321: Open redirect in Browser

> Network-adjacent attackers can force the browser to open malicious URLs via captive portal responses, potentially leading to arbitrary code execution.

- **Severity:** Medium 5.5 (`CVSS:3.0/AV:A/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 10 Feb 2020
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-v8fr-hv57-w55f

## What is CVE-2019-13321?

CVE-2019-13321 is a medium-severity vulnerability in Xiaomi Browser, published on 10 Feb 2020. 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

This vulnerability allows network adjacent attackers to execute arbitrary code on affected installations of Xiaomi Browser Prior to 10.4.0. User interaction is required to exploit this vulnerability in that the target must connect to a malicious access point. The specific flaw exists within the handling of HTTP responses to the Captive Portal. A crafted HTML response can cause the Captive Portal to to open a browser to a specified location without user interaction. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of the current process. Was ZDI-CAN-7467.

Weakness: CWE-732 (Incorrect Permission Assignment for Critical Resource)

## Which versions are affected by CVE-2019-13321?

It affects 1 product.


Products: Mi Mi Browser.

## How do I fix CVE-2019-13321?

No fix has been published for CVE-2019-13321 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-13321 being exploited?

There is no known exploitation of CVE-2019-13321 in the wild and no public exploit code.

## Other vulnerabilities in Xiaomi Browser

- [CVE-2020-14116](https://insights.sbomify.com/CVE-2020-14116/): Other in Mi Browser (high 7.5)
- [CVE-2019-13322](https://insights.sbomify.com/CVE-2019-13322/): Code injection in Browser (high 7.5)
- [CVE-2019-10875](https://insights.sbomify.com/CVE-2019-10875/): Other in n/a (medium 6.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-13321 and fix it if it is affected.

What it is: CVE-2019-13321 is a medium-severity vulnerability in Xiaomi Browser, published on 10 Feb 2020. 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-2019-13321 in the wild and no public exploit code.

Affected product: Xiaomi Browser. 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-2019-13321/ (Markdown: https://insights.sbomify.com/CVE-2019-13321/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-13321
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-13321
- OSV: https://osv.dev/vulnerability/CVE-2019-13321

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-13321/
Summaries are generated and may contain mistakes; the official description above is the record.