CyberSecBulletin
CVE-2023-43743NVD status: Modified

Mx-se Firmware: Improper Neutralization of Special Elements used in an SQL Command

Published Updated By the CyberSecBulletin desk

CVE-2023-43743 is a high-severity improper neutralization of special elements used in an SQL command vulnerability in Mx-se Firmware from Zultys, with a CVSS 3.1 base score of 8.8 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 16.0.4, 17.0.10 as the first without the flaw, so updating Mx-se Firmware to one of those releases or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.69% chance of exploitation within 30 days, higher than 53% of scored CVEs.

Next patch cycle

High severity with no evidence of exploitation so far.

What to do

  1. Update Mx-se Firmware to 16.0.4 or 17.0.10, whichever matches your release line, or a later version.
  2. Update Mx-se Ii Firmware to 16.0.4 or 17.0.10, whichever matches your release line, or a later version.
  3. Update Mx-e Firmware to 16.0.4 or 17.0.10, whichever matches your release line, or a later version.

Affected products and versions

VendorProductAffected versionsFixed in
ZultysMx-se Firmwarebefore 16.0.4; 17.0.6 up to, but not including, 17.0.1016.0.4, 17.0.10
ZultysMx-se Ii Firmwarebefore 16.0.4; 17.0.6 up to, but not including, 17.0.1016.0.4, 17.0.10
ZultysMx-e Firmwarebefore 16.0.4; 17.0.6 up to, but not including, 17.0.1016.0.4, 17.0.10
ZultysMx-virtual Firmwarebefore 16.0.4; 17.0.6 up to, but not including, 17.0.1016.0.4, 17.0.10
ZultysMx250 Firmwarebefore 16.0.4; 17.0.6 up to, but not including, 17.0.1016.0.4, 17.0.10
ZultysMx30 Firmwarebefore 16.0.4; 17.0.6 up to, but not including, 17.0.1016.0.4, 17.0.10

Version data comes from NVD's product matching. 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
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:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. Scored by NVD.

Scoring systemScoreSeverityScored by
CVSS 3.18.8HighNVD
CVSS 3.18.8HighCISA (ADP)

Official description

A SQL injection vulnerability in Zultys MX-SE, MX-SE II, MX-E, MX-Virtual, MX250, and MX30 with firmware versions prior to 17.0.10 patch 17161 and 16.04 patch 16109 allows an authenticated attacker to execute arbitrary SQL queries on the backend database via the filter parameter in requests to the /newapi/ endpoint in the Zultys MX web interface.

Source: the CVE record as published by its numbering authority, via NVD and CVE.org.

The underlying weakness: Improper Neutralization of Special Elements used in an SQL Command

The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. Without sufficient removal or quoting of SQL syntax in user-controllable inputs, the generated SQL query can cause those inputs to be interpreted as SQL instead of ordinary user data.

How developers prevent this class of flaw

  • Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid. For example, consider using persistence layers such as Hibernate or Enterprise Java Beans, which can provide significant protection against SQL injection if used properly.
  • For any security checks that are performed on the client side, ensure that these checks are duplicated on the server side, in order to avoid CWE-602. Attackers can bypass the client-side checks by modifying values after the checks have been performed, or by changing the client to remove the client-side checks entirely. Then, these modified values would be submitted to the server.
  • When the set of acceptable objects, such as filenames or URLs, is limited or known, create a mapping from a set of fixed input values (such as numeric IDs) to the actual filenames or URLs, and reject all other inputs.

More Improper Neutralization of Special Elements used in an SQL Command vulnerabilities (CWE-89)

Timeline

  1. CVE record published.
  2. CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: total).
  3. Record last changed materially (score, affected products, status or references).

References

Third-party and government advisories

Other references

Other vulnerabilities in Mx-se Firmware

All Mx-se Firmware vulnerabilities

Recent Improper Neutralization of Special Elements used in an SQL Command vulnerabilities

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