CyberSecBulletin
CVE-2024-56835NVD status: Modified

RUGGEDCOM ROX MX5000: Improper Neutralization of Special Elements in Output Used by a Downstream Component

Published Updated By the CyberSecBulletin desk

CVE-2024-56835 is a high-severity improper neutralization of special elements in output used by a downstream component vulnerability in RUGGEDCOM ROX MX5000 from Siemens, 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 version V2.17.0 as the first without the flaw, so updating RUGGEDCOM ROX MX5000 to that release or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.54% chance of exploitation within 30 days, which is low compared with other CVEs.

Next patch cycle

High severity with no evidence of exploitation so far.

What to do

  1. Update RUGGEDCOM ROX MX5000 to V2.17.0 or a later version.
  2. Update RUGGEDCOM ROX MX5000RE to V2.17.0 or a later version.
  3. Update RUGGEDCOM ROX RX1400 to V2.17.0 or a later version.
  4. Read the advisory on cert-portal.siemens.com for workarounds and exact fixed builds.

Affected products and versions

VendorProductAffected versionsFixed in
SiemensRUGGEDCOM ROX MX5000before V2.17.0V2.17.0
SiemensRUGGEDCOM ROX MX5000REbefore V2.17.0V2.17.0
SiemensRUGGEDCOM ROX RX1400before V2.17.0V2.17.0
SiemensRUGGEDCOM ROX RX1500before V2.17.0V2.17.0
SiemensRUGGEDCOM ROX RX1501before V2.17.0V2.17.0
SiemensRUGGEDCOM ROX RX1510before V2.17.0V2.17.0
SiemensRUGGEDCOM ROX RX1511before V2.17.0V2.17.0
SiemensRUGGEDCOM ROX RX1512before V2.17.0V2.17.0
SiemensRUGGEDCOM ROX RX1524before V2.17.0V2.17.0
SiemensRUGGEDCOM ROX RX1536before V2.17.0V2.17.0
SiemensRUGGEDCOM ROX RX5000before V2.17.0V2.17.0
SiemensRuggedcom Rox Ii Firmwarebefore 2.17.02.17.0

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
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 CNA (siemens.com).

Scoring systemScoreSeverityScored by
CVSS 4.08.7HighCNA (siemens.com)
CVSS 3.18.8HighCNA (siemens.com)

Official description

A vulnerability has been identified in RUGGEDCOM ROX MX5000 (All versions < V2.17.0), RUGGEDCOM ROX MX5000RE (All versions < V2.17.0), RUGGEDCOM ROX RX1400 (All versions < V2.17.0), RUGGEDCOM ROX RX1500 (All versions < V2.17.0), RUGGEDCOM ROX RX1501 (All versions < V2.17.0), RUGGEDCOM ROX RX1510 (All versions < V2.17.0), RUGGEDCOM ROX RX1511 (All versions < V2.17.0), RUGGEDCOM ROX RX1512 (All versions < V2.17.0), RUGGEDCOM ROX RX1524 (All versions < V2.17.0), RUGGEDCOM ROX RX1536 (All versions < V2.17.0), RUGGEDCOM ROX RX5000 (All versions < V2.17.0). The DHCP Server configuration file of the affected products is subject to code injection. An attacker could leverage this vulnerability to spawn a reverse shell and gain root access on the affected system.

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

The underlying weakness: Improper Neutralization of Special Elements in Output Used by a Downstream Component

The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.

How developers prevent this class of flaw

  • Programming languages and supporting technologies might be chosen which are not subject to these issues.
  • Utilize an appropriate mix of allowlist and denylist parsing to filter control-plane syntax from all input.

More Improper Neutralization of Special Elements in Output Used by a Downstream Component vulnerabilities (CWE-74)

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

Other vulnerabilities in RUGGEDCOM ROX MX5000

All RUGGEDCOM ROX MX5000 vulnerabilities

Recent Improper Neutralization of Special Elements in Output Used by a Downstream Component vulnerabilities

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