ctrlX HMI Web Panel - WR21 (WR2107): Cleartext Transmission of Sensitive Information
CVE-2023-45321 is a high-severity cleartext transmission of sensitive information vulnerability in ctrlX HMI Web Panel - WR21 (WR2107) from Bosch Rexroth, with a CVSS 3.1 base score of 8.8 out of 10. It can be exploited from the same local network by an unauthenticated attacker, without any action from a user. Affected ctrlX HMI Web Panel - WR21 (WR2107) versions: all. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.14% chance of exploitation within 30 days, which is low compared with other CVEs.
High severity with no evidence of exploitation so far.
What to do
- Update ctrlx_hmi_web_panel_wr2107 to RC7(Build date 20231107) or a later version.
- Read the advisory on psirt.bosch.com for workarounds and exact fixed builds.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Bosch Rexroth | ctrlX HMI Web Panel - WR21 (WR2107) | all | Not stated |
| Bosch Rexroth | ctrlX HMI Web Panel - WR21 (WR2110) | all | Not stated |
| Bosch Rexroth | ctrlX HMI Web Panel - WR21 (WR2115) | all | Not stated |
| Boschrexroth | ctrlx_hmi_web_panel_wr2107 | before RC7(Build date 20231107) | RC7(Build date 20231107) |
| Boschrexroth | Ctrlx Hmi Web Panel Wr2107 Firmware | Not specified in the record | Not stated |
| Boschrexroth | Ctrlx Hmi Web Panel Wr2110 Firmware | Not specified in the record | Not stated |
| Boschrexroth | Ctrlx Hmi Web Panel Wr2115 Firmware | Not specified in the record | Not stated |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- AdjacentThe attacker must be on the same local network segment.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- NoneNo account or login is needed.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 8.3 | High | CNA (bosch.com) |
| CVSS 3.1 | 8.8 | High | NVD |
Official description
The Android Client application, when enrolled with the define method 1 (the user manually inserts the server ip address), use HTTP protocol to retrieve sensitive information (ip address and credentials to connect to a remote MQTT broker entity) instead of HTTPS and this feature is not configurable by the user. Due to the lack of encryption of HTTP,this issue allows an attacker placed in the same subnet network of the HMI device to intercept username and password necessary to authenticate to the MQTT server responsible to implement the remote management protocol.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Cleartext Transmission of Sensitive Information
The product transmits sensitive or security-critical data in cleartext in a communication channel that can be sniffed by unauthorized actors.
How developers prevent this class of flaw
- Before transmitting, encrypt the data using reliable, confidentiality-protecting cryptographic protocols.
- When using web applications with SSL, use SSL for the entire session from login to logout, not just for the initial login page.
- When designing hardware platforms, ensure that approved encryption algorithms (such as those recommended by NIST) protect paths from security critical data to trusted user applications.
More Cleartext Transmission of Sensitive Information vulnerabilities (CWE-319)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Advisories
Other vulnerabilities in ctrlX HMI Web Panel - WR21 (WR2107)
- 8.8 High severity
- 8.8 High severity
Recent Cleartext Transmission of Sensitive Information vulnerabilities
- 7.5 High severity
- 7.5 High severity
- 8.2 High severity
- 7.5 High severity
- 7.5 High severity
- 7.5 High severity
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