CVE Vulnerabilities

CVE-2022-22532

Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')

Published: Feb 09, 2022 | Modified: Sep 30, 2022
CVSS 3.x
9.8
CRITICAL
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.x
7.5 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P
RedHat/V2
RedHat/V3
Ubuntu

In SAP NetWeaver Application Server Java - versions KRNL64NUC 7.22, 7.22EXT, 7.49, KRNL64UC, 7.22, 7.22EXT, 7.49, 7.53, KERNEL 7.22, 7.49, 7.53, an unauthenticated attacker could submit a crafted HTTP server request which triggers improper shared memory buffer handling. This could allow the malicious payload to be executed and hence execute functions that could be impersonating the victim or even steal the victims logon session.

Weakness

The product acts as an intermediary HTTP agent (such as a proxy or firewall) in the data flow between two entities such as a client and server, but it does not interpret malformed HTTP requests or responses in ways that are consistent with how the messages will be processed by those entities that are at the ultimate destination.

Affected Software

Name Vendor Start Version End Version
Netweaver_application_server_java Sap 7.22 (including) 7.22 (including)
Netweaver_application_server_java Sap 7.49 (including) 7.49 (including)
Netweaver_application_server_java Sap 7.53 (including) 7.53 (including)
Netweaver_application_server_java Sap krnl64nuc_7.22 (including) krnl64nuc_7.22 (including)
Netweaver_application_server_java Sap krnl64nuc_7.22ext (including) krnl64nuc_7.22ext (including)
Netweaver_application_server_java Sap krnl64nuc_7.49 (including) krnl64nuc_7.49 (including)
Netweaver_application_server_java Sap krnl64uc_7.22 (including) krnl64uc_7.22 (including)
Netweaver_application_server_java Sap krnl64uc_7.22ext (including) krnl64uc_7.22ext (including)
Netweaver_application_server_java Sap krnl64uc_7.49 (including) krnl64uc_7.49 (including)

Extended Description

HTTP requests or responses (“messages”) can be malformed or unexpected in ways that cause web servers or clients to interpret the messages in different ways than intermediary HTTP agents such as load balancers, reverse proxies, web caching proxies, application firewalls, etc. For example, an adversary may be able to add duplicate or different header fields that a client or server might interpret as one set of messages, whereas the intermediary might interpret the same sequence of bytes as a different set of messages. For example, discrepancies can arise in how to handle duplicate headers like two Transfer-encoding (TE) or two Content-length (CL), or the malicious HTTP message will have different headers for TE and CL. The inconsistent parsing and interpretation of messages can allow the adversary to “smuggle” a message to the client/server without the intermediary being aware of it. This weakness is usually the result of the usage of outdated or incompatible HTTP protocol versions in the HTTP agents.

Potential Mitigations

References