HTTP request smuggling in SAP Web Dispatcher

1) Inconsistent interpretation of HTTP requests

EUVDB-ID: #VU78724

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: CVE-2023-33987

CWE-ID: CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling')

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform HTTP request smuggling attacks.

The vulnerability exists due to improper validation of HTTP requests. A remote attacker can send a specially crafted HTTP request to the server and smuggle arbitrary HTTP headers.

Successful exploitation of vulnerability may allow an attacker to poison HTTP cache and perform phishing attacks.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

SAP Web Dispatcher Kernel: 7.49 - 7.90

SAP Web Dispatcher Kernel:

SAP Web Dispatcher WEBDISP: 7.49 - 7.90

CPE2.3

• cpe:2.3:a:sap:sap_web_dispatcher_kernel:7.49:*:*:*:*:*:*:*
• cpe:2.3:a:sap:sap_web_dispatcher_kernel:7.53:*:*:*:*:*:*:*
• cpe:2.3:a:sap:sap_web_dispatcher_kernel:7.54:*:*:*:*:*:*:*
• cpe:2.3:a:sap:sap_web_dispatcher_kernel::*:*:*:*:*:*:*
• cpe:2.3:a:sap:sap_web_dispatcher_webdisp:7.49:*:*:*:*:*:*:*
• cpe:2.3:a:sap:sap_web_dispatcher_webdisp:7.53:*:*:*:*:*:*:*
• cpe:2.3:a:sap:sap_web_dispatcher_webdisp:7.54:*:*:*:*:*:*:*

External links

https://dam.sap.com/mac/app/e/pdf/preview/embed/ucQrx6G?ltr=a&rc=10&july2023

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.