#VU74262 HTTP response splitting in API Gateway and API Manager

Vulnerability identifier: #VU74262

Vulnerability risk: Medium

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: N/A

CWE-ID: CWE-113

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
API Gateway
Server applications / Application servers
API Manager
Web applications / Other software

Vendor: Axway

Description

The vulnerability allows a remote attacker to perform HTTP splitting attacks.

The vulnerability exists due to software does not correclty process CRLF character sequences. A remote attacker can send specially crafted request containing CRLF sequence and make the application to send a split HTTP response.

Successful exploitation of the vulnerability may allow an attacker perform cache poisoning attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

API Gateway: April 2019 - February 2022

API Manager: April 2019 - February 2022

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External links
https://docs.axway.com/bundle/axway-open-docs/page/docs/apim_relnotes/20220530_apimgr_relnotes/index.html

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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.