Qlik Sense Enterprise for Windows before August 2023 Patch 2 allows unauthenticated remote code execution, aka QB-21683. Due to improper validation of HTTP headers, a remote attacker is able to elevate their privilege by tunneling HTTP requests, allowing them to execute HTTP requests on the backend server that hosts the repository application. The fixed versions are August 2023 Patch 2, May 2023 Patch 6, February 2023 Patch 10, November 2022 Patch 12, August 2022 Patch 14, May 2022 Patch 16, February 2022 Patch 15, and November 2021 Patch 17. NOTE: this issue exists because of an incomplete fix for CVE-2023-41265.
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.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Qlik_sense | Qlik | august_2022 (including) | august_2022 (including) |
| Qlik_sense | Qlik | august_2022-patch_1 (including) | august_2022-patch_1 (including) |
| Qlik_sense | Qlik | august_2022-patch_10 (including) | august_2022-patch_10 (including) |
| Qlik_sense | Qlik | august_2022-patch_11 (including) | august_2022-patch_11 (including) |
| Qlik_sense | Qlik | august_2022-patch_12 (including) | august_2022-patch_12 (including) |
| Qlik_sense | Qlik | august_2022-patch_13 (including) | august_2022-patch_13 (including) |
| Qlik_sense | Qlik | august_2022-patch_2 (including) | august_2022-patch_2 (including) |
| Qlik_sense | Qlik | august_2022-patch_3 (including) | august_2022-patch_3 (including) |
| Qlik_sense | Qlik | august_2022-patch_4 (including) | august_2022-patch_4 (including) |
| Qlik_sense | Qlik | august_2022-patch_5 (including) | august_2022-patch_5 (including) |
| Qlik_sense | Qlik | august_2022-patch_6 (including) | august_2022-patch_6 (including) |
| Qlik_sense | Qlik | august_2022-patch_7 (including) | august_2022-patch_7 (including) |
| Qlik_sense | Qlik | august_2022-patch_8 (including) | august_2022-patch_8 (including) |
| Qlik_sense | Qlik | august_2022-patch_9 (including) | august_2022-patch_9 (including) |
| Qlik_sense | Qlik | august_2023 (including) | august_2023 (including) |
| Qlik_sense | Qlik | august_2023-patch_1 (including) | august_2023-patch_1 (including) |
| Qlik_sense | Qlik | february_2022 (including) | february_2022 (including) |
| Qlik_sense | Qlik | february_2022-patch_1 (including) | february_2022-patch_1 (including) |
| Qlik_sense | Qlik | february_2022-patch_10 (including) | february_2022-patch_10 (including) |
| Qlik_sense | Qlik | february_2022-patch_11 (including) | february_2022-patch_11 (including) |
| Qlik_sense | Qlik | february_2022-patch_12 (including) | february_2022-patch_12 (including) |
| Qlik_sense | Qlik | february_2022-patch_13 (including) | february_2022-patch_13 (including) |
| Qlik_sense | Qlik | february_2022-patch_14 (including) | february_2022-patch_14 (including) |
| Qlik_sense | Qlik | february_2022-patch_2 (including) | february_2022-patch_2 (including) |
| Qlik_sense | Qlik | february_2022-patch_3 (including) | february_2022-patch_3 (including) |
| Qlik_sense | Qlik | february_2022-patch_4 (including) | february_2022-patch_4 (including) |
| Qlik_sense | Qlik | february_2022-patch_5 (including) | february_2022-patch_5 (including) |
| Qlik_sense | Qlik | february_2022-patch_6 (including) | february_2022-patch_6 (including) |
| Qlik_sense | Qlik | february_2022-patch_7 (including) | february_2022-patch_7 (including) |
| Qlik_sense | Qlik | february_2022-patch_8 (including) | february_2022-patch_8 (including) |
| Qlik_sense | Qlik | february_2022-patch_9 (including) | february_2022-patch_9 (including) |
| Qlik_sense | Qlik | february_2023 (including) | february_2023 (including) |
| Qlik_sense | Qlik | february_2023-patch_1 (including) | february_2023-patch_1 (including) |
| Qlik_sense | Qlik | february_2023-patch_2 (including) | february_2023-patch_2 (including) |
| Qlik_sense | Qlik | february_2023-patch_3 (including) | february_2023-patch_3 (including) |
| Qlik_sense | Qlik | february_2023-patch_4 (including) | february_2023-patch_4 (including) |
| Qlik_sense | Qlik | february_2023-patch_5 (including) | february_2023-patch_5 (including) |
| Qlik_sense | Qlik | february_2023-patch_6 (including) | february_2023-patch_6 (including) |
| Qlik_sense | Qlik | february_2023-patch_7 (including) | february_2023-patch_7 (including) |
| Qlik_sense | Qlik | february_2023-patch_8 (including) | february_2023-patch_8 (including) |
| Qlik_sense | Qlik | february_2023-patch_9 (including) | february_2023-patch_9 (including) |
| Qlik_sense | Qlik | may_2022 (including) | may_2022 (including) |
| Qlik_sense | Qlik | may_2022-patch_1 (including) | may_2022-patch_1 (including) |
| Qlik_sense | Qlik | may_2022-patch_10 (including) | may_2022-patch_10 (including) |
| Qlik_sense | Qlik | may_2022-patch_11 (including) | may_2022-patch_11 (including) |
| Qlik_sense | Qlik | may_2022-patch_12 (including) | may_2022-patch_12 (including) |
| Qlik_sense | Qlik | may_2022-patch_13 (including) | may_2022-patch_13 (including) |
| Qlik_sense | Qlik | may_2022-patch_14 (including) | may_2022-patch_14 (including) |
| Qlik_sense | Qlik | may_2022-patch_15 (including) | may_2022-patch_15 (including) |
| Qlik_sense | Qlik | may_2022-patch_2 (including) | may_2022-patch_2 (including) |
| Qlik_sense | Qlik | may_2022-patch_3 (including) | may_2022-patch_3 (including) |
| Qlik_sense | Qlik | may_2022-patch_4 (including) | may_2022-patch_4 (including) |
| Qlik_sense | Qlik | may_2022-patch_5 (including) | may_2022-patch_5 (including) |
| Qlik_sense | Qlik | may_2022-patch_6 (including) | may_2022-patch_6 (including) |
| Qlik_sense | Qlik | may_2022-patch_7 (including) | may_2022-patch_7 (including) |
| Qlik_sense | Qlik | may_2022-patch_8 (including) | may_2022-patch_8 (including) |
| Qlik_sense | Qlik | may_2022-patch_9 (including) | may_2022-patch_9 (including) |
| Qlik_sense | Qlik | may_2023 (including) | may_2023 (including) |
| Qlik_sense | Qlik | may_2023-patch_1 (including) | may_2023-patch_1 (including) |
| Qlik_sense | Qlik | may_2023-patch_2 (including) | may_2023-patch_2 (including) |
| Qlik_sense | Qlik | may_2023-patch_3 (including) | may_2023-patch_3 (including) |
| Qlik_sense | Qlik | may_2023-patch_4 (including) | may_2023-patch_4 (including) |
| Qlik_sense | Qlik | may_2023-patch_5 (including) | may_2023-patch_5 (including) |
| Qlik_sense | Qlik | november_2021 (including) | november_2021 (including) |
| Qlik_sense | Qlik | november_2021-patch_1 (including) | november_2021-patch_1 (including) |
| Qlik_sense | Qlik | november_2021-patch_10 (including) | november_2021-patch_10 (including) |
| Qlik_sense | Qlik | november_2021-patch_11 (including) | november_2021-patch_11 (including) |
| Qlik_sense | Qlik | november_2021-patch_12 (including) | november_2021-patch_12 (including) |
| Qlik_sense | Qlik | november_2021-patch_13 (including) | november_2021-patch_13 (including) |
| Qlik_sense | Qlik | november_2021-patch_14 (including) | november_2021-patch_14 (including) |
| Qlik_sense | Qlik | november_2021-patch_15 (including) | november_2021-patch_15 (including) |
| Qlik_sense | Qlik | november_2021-patch_16 (including) | november_2021-patch_16 (including) |
| Qlik_sense | Qlik | november_2021-patch_2 (including) | november_2021-patch_2 (including) |
| Qlik_sense | Qlik | november_2021-patch_3 (including) | november_2021-patch_3 (including) |
| Qlik_sense | Qlik | november_2021-patch_4 (including) | november_2021-patch_4 (including) |
| Qlik_sense | Qlik | november_2021-patch_5 (including) | november_2021-patch_5 (including) |
| Qlik_sense | Qlik | november_2021-patch_6 (including) | november_2021-patch_6 (including) |
| Qlik_sense | Qlik | november_2021-patch_7 (including) | november_2021-patch_7 (including) |
| Qlik_sense | Qlik | november_2021-patch_8 (including) | november_2021-patch_8 (including) |
| Qlik_sense | Qlik | november_2021-patch_9 (including) | november_2021-patch_9 (including) |
| Qlik_sense | Qlik | november_2022 (including) | november_2022 (including) |
| Qlik_sense | Qlik | november_2022-patch_1 (including) | november_2022-patch_1 (including) |
| Qlik_sense | Qlik | november_2022-patch_10 (including) | november_2022-patch_10 (including) |
| Qlik_sense | Qlik | november_2022-patch_11 (including) | november_2022-patch_11 (including) |
| Qlik_sense | Qlik | november_2022-patch_2 (including) | november_2022-patch_2 (including) |
| Qlik_sense | Qlik | november_2022-patch_3 (including) | november_2022-patch_3 (including) |
| Qlik_sense | Qlik | november_2022-patch_4 (including) | november_2022-patch_4 (including) |
| Qlik_sense | Qlik | november_2022-patch_5 (including) | november_2022-patch_5 (including) |
| Qlik_sense | Qlik | november_2022-patch_6 (including) | november_2022-patch_6 (including) |
| Qlik_sense | Qlik | november_2022-patch_7 (including) | november_2022-patch_7 (including) |
| Qlik_sense | Qlik | november_2022-patch_8 (including) | november_2022-patch_8 (including) |
| Qlik_sense | Qlik | november_2022-patch_9 (including) | november_2022-patch_9 (including) |
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.