CyberSecBulletin
CVE-2023-46686NVD status: Modified

Command Centre Diagnostics Service: Reliance on Untrusted Inputs in a Security Decision

Published Updated By the CyberSecBulletin desk

CVE-2023-46686 is a high-severity reliance on untrusted inputs in a security decision vulnerability in Command Centre Diagnostics Service from Gallagher, with a CVSS 3.1 base score of 7.1 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. Affected Command Centre Diagnostics Service versions: 1.3.0 and earlier. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.52% 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 Command Centre to 9.00.1507 or a later version.
  2. Read the advisory on security.gallagher.com for workarounds and exact fixed builds.

Affected products and versions

VendorProductAffected versionsFixed in
GallagherCommand Centre Diagnostics Service1.3.0 and earlierNot stated
GallagherCommand Centre9.00 up to, but not including, 9.00.1507; 9.00.15079.00.1507

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
LowSome restricted data can be read.
Integrity
HighData or code can be modified at will.
Availability
NoneAvailability is not affected.

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N. Scored by NVD.

Scoring systemScoreSeverityScored by
CVSS 3.15.5MediumCNA (gallagher.com)
CVSS 3.17.1HighNVD

Official description

A reliance on untrusted inputs in a security decision could be exploited by a privileged user to configure the Gallagher Command Centre Diagnostics Service to use less secure communication protocols. This issue affects: Gallagher Diagnostics Service prior to v1.3.0 (distributed in 9.00.1507(MR1)).

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

The underlying weakness: Reliance on Untrusted Inputs in a Security Decision

The product uses a protection mechanism that relies on the existence or values of an input, but the input can be modified by an untrusted actor in a way that bypasses the protection mechanism.

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. With a stateless protocol such as HTTP, use a framework that maintains the state for you. Examples include ASP.NET View State and the OWASP ESAPI Session Management feature. Be careful of language features that provide state support, since these might be provided as a convenience to the programmer and may not be considering security.
  • 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 using PHP, configure the application so that it does not use register_globals. During implementation, develop the application so that it does not rely on this feature, but be wary of implementing a register_globals emulation that is subject to weaknesses such as CWE-95, CWE-621, and similar issues.

More Reliance on Untrusted Inputs in a Security Decision vulnerabilities (CWE-807)

Timeline

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

References

Recent Reliance on Untrusted Inputs in a Security Decision vulnerabilities

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