# CVE-2021-1283: Cisco Data Center Network Manager Information Disclosure Vulnerability

> An authenticated local attacker can view sensitive information in system log files due to improper masking in Cisco DCNM.

- **Severity:** Medium 5.5 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 20 Jan 2021
- **Updated:** 12 Nov 2024
- **Also known as:** GHSA-j9g2-35f7-x39p

## What is CVE-2021-1283?

CVE-2021-1283 is a medium-severity vulnerability in Cisco Data Center Network Manager, published on 20 Jan 2021. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

A vulnerability in the logging subsystem of Cisco Data Center Network Manager (DCNM) could allow an authenticated, local attacker to view sensitive information in a system log file that should be restricted. The vulnerability exists because sensitive information is not properly masked before it is written to system log files. An attacker could exploit this vulnerability by authenticating to an affected device and inspecting a specific system log file. A successful exploit could allow the attacker to view sensitive information in the system log file. To exploit this vulnerability, the attacker would need to have valid user credentials.

Weakness: CWE-789 (Memory Allocation with Excessive Size Value)

## Which versions are affected by CVE-2021-1283?

It affects 1 product.


Products: Cisco Data Center Network Manager.

## How do I fix CVE-2021-1283?

No fix has been published for CVE-2021-1283 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-1283 being exploited?

There is no known exploitation of CVE-2021-1283 in the wild and no public exploit code.

## Other vulnerabilities in Cisco Data Center Network Manager

- [CVE-2020-3382](https://insights.sbomify.com/CVE-2020-3382/): Cisco Data Center Network Manager Authentication Bypass Vulnerability (critical 9.8)
- [CVE-2019-15975](https://insights.sbomify.com/CVE-2019-15975/): Cisco Data Center Network Manager Authentication Bypass Vulnerabilities (critical 9.8)
- [CVE-2019-15976](https://insights.sbomify.com/CVE-2019-15976/): Cisco Data Center Network Manager Authentication Bypass Vulnerabilities (critical 9.8)
- [CVE-2019-15977](https://insights.sbomify.com/CVE-2019-15977/): Cisco Data Center Network Manager Authentication Bypass Vulnerabilities (critical 9.8)
- [CVE-2019-1619](https://insights.sbomify.com/CVE-2019-1619/): Cisco Data Center Network Manager Authentication Bypass Vulnerability (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-1283 and fix it if it is affected.

What it is: CVE-2021-1283 is a medium-severity vulnerability in Cisco Data Center Network Manager, published on 20 Jan 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-2021-1283 in the wild and no public exploit code.

Affected product: Cisco Data Center Network Manager. 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-2021-1283/ (Markdown: https://insights.sbomify.com/CVE-2021-1283/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-1283
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-1283
- OSV: https://osv.dev/vulnerability/CVE-2021-1283

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-1283/
Summaries are generated and may contain mistakes; the official description above is the record.