SINEC Security Monitor: Improper Neutralization of Argument Delimiters in a Command
CVE-2024-47553 is a critical-severity improper neutralization of argument delimiters in a command vulnerability in SINEC Security Monitor from Siemens, with a CVSS 3.1 base score of 9.9 out of 10. It can be exploited remotely over the network by an attacker with a low-privileged account, without any action from a user. The record lists versions V4.9.0, 4.9.0 as the first without the flaw, so updating SINEC Security Monitor to one of those releases or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.85% chance of exploitation within 30 days, higher than 59% of scored CVEs.
Critical severity: a successful attack would have severe impact.
What to do
- Update SINEC Security Monitor to V4.9.0 or 4.9.0, whichever matches your release line, or a later version.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Siemens | SINEC Security Monitor | before V4.9.0; before 4.9.0 | V4.9.0, 4.9.0 |
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
- NetworkCan be exploited remotely over a network, including the internet.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- LowA basic user account is enough.
- User interaction
- NoneNo action by a victim is required.
- Scope
- ChangedThe attack can reach beyond the vulnerable component into other systems.
- 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:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 4.0 | 9.4 | Critical | CNA (siemens.com) |
| CVSS 3.1 | 9.9 | Critical | CNA (siemens.com) |
| CVSS 3.1 | 9.9 | Critical | NVD |
Official description
A vulnerability has been identified in SINEC Security Monitor (All versions < V4.9.0). The affected application does not properly validate user input to the ```ssmctl-client``` command. This could allow an authenticated, lowly privileged remote attacker to execute arbitrary code with root privileges on the underlying OS.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Improper Neutralization of Argument Delimiters in a Command
The product constructs a string for a command to be executed by a separate component in another control sphere, but it does not properly delimit the intended arguments, options, or switches within that command string.
How developers prevent this class of flaw
- Understand all the potential areas where untrusted inputs can enter your product: parameters or arguments, cookies, anything read from the network, environment variables, request headers as well as content, URL components, e-mail, files, databases, and any external systems that provide data to the application. Perform input validation at well-defined interfaces.
- Directly convert your input type into the expected data type, such as using a conversion function that translates a string into a number. After converting to the expected data type, ensure that the input's values fall within the expected range of allowable values and that multi-field consistencies are maintained.
- When exchanging data between components, ensure that both components are using the same character encoding. Ensure that the proper encoding is applied at each interface. Explicitly set the encoding you are using whenever the protocol allows you to do so.
More Improper Neutralization of Argument Delimiters in a Command vulnerabilities (CWE-88)
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
Patches and release notes
- cert-portal.siemens.com/productcert/html/ssa-430425.htmlThird Party Advisory
Other vulnerabilities in SINEC Security Monitor
- 8.8 High severity
Recent Improper Neutralization of Argument Delimiters in a Command vulnerabilities
- 8.8 High severity
- 7.2 High severity
Mitel SIP Phones Argument Injection Exploited
- 9.9 Critical severity
- 9.8 Critical severity
- 8.8 High severity
- 8.8 High severity
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