# CVE-2021-22398: Security feature bypass in Hulk-AL00C;Jennifer-AN00C;Jenny-AL10B;OxfordPL-AN10B

> Attackers can bypass Digital Balance limits on specific Huawei smartphones through a logic error when the feature is enabled.

- **Severity:** Medium 4.6 (`CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 2 Aug 2021
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-m8mg-9jxc-qmq4

## What is CVE-2021-22398?

CVE-2021-22398 is a medium-severity vulnerability in Hulk-AL00C;Jennifer-AN00C;Jenny-AL10B;OxfordPL-AN10B, published on 2 Aug 2021. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

There is a logic error vulnerability in several smartphones. The software does not properly restrict certain operation when the Digital Balance function is on. Successful exploit could allow the attacker to bypass the Digital Balance limit after a series of operations. Affected product versions include: Hulk-AL00C 9.1.1.201(C00E201R8P1);Jennifer-AN00C 10.1.1.171(C00E170R6P3);Jenny-AL10B 10.1.0.228(C00E220R5P1) and OxfordPL-AN10B 10.1.0.116(C00E110R2P1).

Weakness: CWE-863 (Incorrect Authorization)

## Which versions are affected by CVE-2021-22398?

It affects 4 products.


Products: Huawei Hulk-Al00c Firmware, Huawei Jennifer-An00c Firmware, Huawei Jenny-Al10b Firmware, Huawei Oxfordpl-An10b Firmware.

## How do I fix CVE-2021-22398?

No fix has been published for CVE-2021-22398 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-22398 being exploited?

There is no known exploitation of CVE-2021-22398 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-22398 and fix it if it is affected.

What it is: CVE-2021-22398 is a medium-severity vulnerability in Hulk-AL00C;Jennifer-AN00C;Jenny-AL10B;OxfordPL-AN10B, published on 2 Aug 2021. 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-2021-22398 in the wild and no public exploit code.

Affected product: Hulk-AL00C;Jennifer-AN00C;Jenny-AL10B;OxfordPL-AN10B. 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-2021-22398/ (Markdown: https://insights.sbomify.com/CVE-2021-22398/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-22398
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-22398
- OSV: https://osv.dev/vulnerability/CVE-2021-22398

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From sbomify Insights: https://insights.sbomify.com/CVE-2021-22398/
Summaries are generated and may contain mistakes; the official description above is the record.