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

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 4.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-11-11 · updated 2026-06-17
Weakness: CWE-90

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.

Affected products

Apache Software Foundation Apache Traffic Control: from 5.1.0 before 5.1.4; from 6.0.0 before 6.0.1; 5.1.4-rc0, 6.0.1-rc0 — fixed in 5.1.4, 6.0.1

How to fix

Upgrade to a fixed version: Apache Software Foundation Apache Traffic Control 5.1.4, 6.0.1. Check the vendor advisory for mitigations.

References

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
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
https://trafficcontrol.apache.org/security/

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