Gallagher Controller 6000: Improper Check for Unusual or Exceptional Conditions
CVE-2022-26078 is a high-severity improper check for unusual or exceptional conditions vulnerability in Gallagher Controller 6000 from Gallagher, with a CVSS 3.1 base score of 7.5 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. The record lists version 220303a as the first without the flaw, so updating Gallagher Controller 6000 to that release or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.93% chance of exploitation within 30 days, higher than 61% of scored CVEs.
High severity with no evidence of exploitation so far.
What to do
- Update Gallagher Controller 6000 to 220303a or a later version.
- Update Controller 6000 Firmware to 8.30.220303a or 8.40.220303a or 8.50.220303a or 8.60.220303a, whichever matches your release line, or a later version.
- Read the advisory on security.gallagher.com for workarounds and exact fixed builds.
- Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Gallagher | Gallagher Controller 6000 | vCR8.60 up to, but not including, 220303a; vCR8.50 up to, but not including, 220303a; vCR8.40 up to, but not including, 220303a; vCR8.30 up to, but not including, 220303a | 220303a |
| Gallagher | Controller 6000 Firmware | 8.30 up to, but not including, 8.30.220303a; 8.40 up to, but not including, 8.40.220303a; 8.50 up to, but not including, 8.50.220303a; 8.60 up to, but not including, 8.60.220303a | 8.30.220303a, 8.40.220303a, 8.50.220303a, 8.60.220303a |
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
- NoneNo account or login is needed.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- NoneNo data is disclosed.
- Integrity
- NoneNothing can be modified.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 7.5 | High | CNA (gallagher.com) |
| CVSS 3.1 | 7.5 | High | NVD |
| CVSS 2.0 | 7.8 | High | NVD |
Official description
Gallagher Controller 6000 is vulnerable to a Denial of Service attack via conflicting ARP packets with a duplicate IP address. This issue affects: Gallagher Gallagher Controller 6000 vCR8.60 versions prior to 220303a; vCR8.50 versions prior to 220303a; vCR8.40 versions prior to 220303a; vCR8.30 versions prior to 220303a.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Improper Check for Unusual or Exceptional Conditions
The product does not check or incorrectly checks for unusual or exceptional conditions that are not expected to occur frequently during day to day operation of the product.
How developers prevent this class of flaw
- Use a language that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid. Choose languages with features such as exception handling that force the programmer to anticipate unusual conditions that may generate exceptions. Custom exceptions may need to be developed to handle unusual business-logic conditions. Be careful not to pass sensitive exceptions back to the user (CWE-209, CWE-248).
- Check the results of all functions that return a value and verify that the value is expected.
- If using exception handling, catch and throw specific exceptions instead of overly-general exceptions (CWE-396, CWE-397). Catch and handle exceptions as locally as possible so that exceptions do not propagate too far up the call stack (CWE-705). Avoid unchecked or uncaught exceptions where feasible (CWE-248).
More Improper Check for Unusual or Exceptional Conditions vulnerabilities (CWE-754)
Timeline
- CVE record published.
- Record last changed materially (score, affected products, status or references).
References
Recent Improper Check for Unusual or Exceptional Conditions vulnerabilities
- 7.5 High severity
- 7.5 High severity
- 9.8 Critical severity
- 7.5 High severity
- 7.5 High severity
- 7.5 High severity
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