# CVE-2019-12693: Cisco Adaptive Security Appliance Software Secure Copy Denial of Service Vulnerability

> An authenticated attacker with high privileges can cause a denial of service on Cisco ASA devices by triggering an integer overflow during SCP file transfers.

- **Severity:** Medium 6.8 (`CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 2 Oct 2019
- **Updated:** 21 Nov 2024
- **Also known as:** GHSA-rc7c-qrr9-4694

## What is CVE-2019-12693?

CVE-2019-12693 is a medium-severity vulnerability in Cisco Adaptive Security Appliance, published on 2 Oct 2019. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

A vulnerability in the Secure Copy (SCP) feature of Cisco Adaptive Security Appliance (ASA) Software could allow an authenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability is due to the use of an incorrect data type for a length variable. An attacker could exploit this vulnerability by initiating the transfer of a large file to an affected device via SCP. To exploit this vulnerability, the attacker would need to have valid privilege level 15 credentials on the affected device. A successful exploit could allow the attacker to cause the length variable to roll over, which could cause the affected device to crash.

Weakness: CWE-190 (Integer Overflow or Wraparound), CWE-704 (Incorrect Type Conversion or Cast)

## Which versions are affected by CVE-2019-12693?

It affects 2 products.


Products: Cisco Adaptive Security Appliance, Cisco Adaptive Security Appliance Software.

## How do I fix CVE-2019-12693?

No fix has been published for CVE-2019-12693 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-12693 being exploited?

There is no known exploitation of CVE-2019-12693 in the wild and no public exploit code.

## Other vulnerabilities in Cisco Adaptive Security Appliance

- [CVE-2021-1573](https://insights.sbomify.com/CVE-2021-1573/): Denial of service in Cisco Adaptive Security Appliance Software (high 8.6)
- [CVE-2021-34793](https://insights.sbomify.com/CVE-2021-34793/): Denial of service in Cisco Adaptive Security Appliance (ASA) Software (high 8.6)
- [CVE-2021-40117](https://insights.sbomify.com/CVE-2021-40117/): Denial of service in Cisco Adaptive Security Appliance (ASA) Software (high 8.6)
- [CVE-2021-40118](https://insights.sbomify.com/CVE-2021-40118/): Denial of service in Cisco Adaptive Security Appliance (ASA) Software (high 8.6)
- [CVE-2020-3304](https://insights.sbomify.com/CVE-2020-3304/): Denial of service in Cisco Adaptive Security Appliance (ASA) Software (high 8.6)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-12693 and fix it if it is affected.

What it is: CVE-2019-12693 is a medium-severity vulnerability in Cisco Adaptive Security Appliance, published on 2 Oct 2019. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2019-12693 in the wild and no public exploit code.

Affected product: Cisco Adaptive Security Appliance. 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-2019-12693/ (Markdown: https://insights.sbomify.com/CVE-2019-12693/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-12693
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-12693
- OSV: https://osv.dev/vulnerability/CVE-2019-12693

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From sbomify Insights: https://insights.sbomify.com/CVE-2019-12693/
Summaries are generated and may contain mistakes; the official description above is the record.