# CVE-2020-8963: Command injection in n/a

> Remote attackers can execute arbitrary OS commands on TimeTools devices via shell metacharacters in specific CGI parameters.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 13 Feb 2020
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-x8g5-2vwh-qjvj

## What is CVE-2020-8963?

CVE-2020-8963 is a critical command injection vulnerability in n/a, published on 13 Feb 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

TimeTools SC7105 1.0.007, SC9205 1.0.007, SC9705 1.0.007, SR7110 1.0.007, SR9210 1.0.007, SR9750 1.0.007, SR9850 1.0.007, T100 1.0.003, T300 1.0.003, and T550 1.0.003 devices allow remote attackers to execute arbitrary OS commands via shell metacharacters in the t3.cgi srmodel or srtime parameter.

Weakness: CWE-78 (Improper Neutralization of Special Elements used in an OS Command)

## Which versions are affected by CVE-2020-8963?

It affects 10 products.


Products: Timetoolsltd Sc7105 Firmware, Timetoolsltd Sc9205 Firmware, Timetoolsltd Sc9705 Firmware, Timetoolsltd Sr7110 Firmware, Timetoolsltd Sr9210 Firmware, Timetoolsltd Sr9750 Firmware, Timetoolsltd Sr9850 Firmware, Timetoolsltd T100 Firmware, Timetoolsltd T300 Firmware, Timetoolsltd T550 Firmware.

## How do I fix CVE-2020-8963?

No fix has been published for CVE-2020-8963 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-8963 being exploited?

There is no known exploitation of CVE-2020-8963 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2020-8964](https://insights.sbomify.com/CVE-2020-8964/): Hardcoded credentials in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-8963 and fix it if it is affected.

What it is: CVE-2020-8963 is a critical command injection vulnerability in n/a, published on 13 Feb 2020. 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-2020-8963 in the wild and no public exploit code.

Affected product: n/a. 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-2020-8963/ (Markdown: https://insights.sbomify.com/CVE-2020-8963/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-8963
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-8963
- OSV: https://osv.dev/vulnerability/CVE-2020-8963

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-8963/
Summaries are generated and may contain mistakes; the official description above is the record.