Vulnerability identifier: #VU58115

Vulnerability risk: High

CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-43350

CWE-ID: CWE-90

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Apache Traffic Control
Server applications / IDS/IPS systems, Firewalls and proxy servers

Vendor: Apache Foundation

Description

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to improper input validation when processing usernames in Apache Traffic Control Traffic Ops. A remote non-authenticated attacker can send a specially crafted POST request to the /login endpoint of any API version and inject arbitrary content into LDAP filter. 

Successful exploitation of the vulnerability may allow an attacker to bypass authentication process and gain unauthorized access to the application.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Apache Traffic Control: 5.0.0 - 6.0.0

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External links
http://trafficcontrol.apache.org/security/
http://www.openwall.com/lists/oss-security/2021/11/11/4
http://www.openwall.com/lists/oss-security/2021/11/11/3

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.