Critical severity · published Nov 11, 2021
CVE-2021-43350
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…
9.8
CVSS
4.8%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)4.8% · higher than 92% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
TC
Traffic Control · Apache
5.1.0 before 5.1.4; 6.0.0 before 6.0.1; 5.1.4; 6.0.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-43350
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-43350
Mailing List
http://www.openwall.com/lists/oss-security/2021/11/11/3
Mailing List
http://www.openwall.com/lists/oss-security/2021/11/11/4
Mailing List
http://www.openwall.com/lists/oss-security/2021/11/17/1
Vendor Advisory
https://trafficcontrol.apache.org/security/
More from Traffic Control
9.8
CVE-2019-12405
Improper authentication is possible in Apache Traffic Control versions 3.0.0 and 3.0.1 if LDAP is enabled for login in the Traffic Ops API component
8.8
CVE-2024-45387
Apache Traffic Control: SQL Injection in Traffic Ops endpoint PUT deliveryservice_request_comments
7.5
CVE-2025-61581
Apache Traffic Control: ReDoS issue in Traffic Router configuration
7.5
CVE-2022-23206
In Apache Traffic Control Traffic Ops prior to 6.1.0 or 5.1.6, an unprivileged user who can reach Traffic Ops over HTTPS can send a specially-crafted POST request to…
7.5
CVE-2017-7670
The Traffic Router component of the incubating Apache Traffic Control project is vulnerable to a Slowloris style Denial of Service attack