#VU95786 Input validation error in Apache Traffic Server - CVE-2023-38522

Vulnerability identifier: #VU95786

Vulnerability risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-38522

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Apache Traffic Server
Server applications / Web servers

Vendor: Apache Foundation

Description

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to the affected application accepts characters that are not allowed for HTTP field names and forwards malformed requests to origin servers. A remote attacker can perform the request smuggling and cache poisoning attacks.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Apache Traffic Server: 8.0.0 - 8.0.8, 8.1.0 - 8.1.10, 9.0.0 - 9.0.2, 9.1.0 - 9.1.4, 9.2.0 - 9.2.4

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External links
https://lists.apache.org/thread/c4mcmpblgl8kkmyt56t23543gp8v56m0

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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.