# CVE-2021-1129: Information disclosure in Cisco Web Security Appliance (WSA)

> Unauthenticated remote attackers can access system and configuration information via the general purpose API due to missing authentication tokens.

- **Severity:** Medium 5.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 20 Jan 2021
- **Updated:** 12 Nov 2024
- **Also known as:** GHSA-36mf-q7m2-w6vp

## What is CVE-2021-1129?

CVE-2021-1129 is a medium-severity vulnerability in Cisco Email Security Appliance, published on 20 Jan 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A vulnerability in the authentication for the general purpose APIs implementation of Cisco Email Security Appliance (ESA), Cisco Content Security Management Appliance (SMA), and Cisco Web Security Appliance (WSA) could allow an unauthenticated, remote attacker to access general system information and certain configuration information from an affected device. The vulnerability exists because a secure authentication token is not required when authenticating to the general purpose API. An attacker could exploit this vulnerability by sending a crafted request for information to the general purpose API on an affected device. A successful exploit could allow the attacker to obtain system and configuration information from the affected device, resulting in an unauthorized information disclosure.

Weakness: CWE-201 (Insertion of Sensitive Information Into Sent Data)

## Which versions are affected by CVE-2021-1129?

It affects 3 products.


Products: Cisco Content Security Management Appliance, Cisco Email Security Appliance, Cisco Web Security Appliance.

## How do I fix CVE-2021-1129?

No fix has been published for CVE-2021-1129 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-1129 being exploited?

There is no known exploitation of CVE-2021-1129 in the wild and no public exploit code.

## Other vulnerabilities in Cisco Email Security Appliance

- [CVE-2014-2119](https://insights.sbomify.com/CVE-2014-2119/): File upload in n/a (high 8.5)
- [CVE-2015-6321](https://insights.sbomify.com/CVE-2015-6321/): Denial of service in n/a (high 7.8)
- [CVE-2013-5537](https://insights.sbomify.com/CVE-2013-5537/): Denial of service in n/a (high 7.8)
- [CVE-2016-2183](https://insights.sbomify.com/CVE-2016-2183/): Weak cryptography in n/a (high 7.5)
- [CVE-2013-3395](https://insights.sbomify.com/CVE-2013-3395/): Cross-site request forgery in n/a (medium 6.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-1129 and fix it if it is affected.

What it is: CVE-2021-1129 is a medium-severity vulnerability in Cisco Email Security Appliance, published on 20 Jan 2021. 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-2021-1129 in the wild and no public exploit code.

Affected product: Cisco Email 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-2021-1129/ (Markdown: https://insights.sbomify.com/CVE-2021-1129/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-1129
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-1129
- OSV: https://osv.dev/vulnerability/CVE-2021-1129

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-1129/
Summaries are generated and may contain mistakes; the official description above is the record.