WatchGuard Firebox Single Sign-On Client Denial-of-Service
Summary
| CVE | CVE-2024-6594 |
|---|---|
| State | PUBLISHED |
| Assigner | WatchGuard |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2024-09-25 12:15:05 UTC |
| Updated | 2026-08-08 00:16:33 UTC |
| Description | Improper Handling of Exceptional Conditions vulnerability in the WatchGuard Single Sign-On Client on Windows causes the client to crash while handling malformed commands. An attacker with network access to the client could create a denial of service condition for the Single Sign-On service by repeatedly issuing malformed commands. |
Risk And Classification
Primary CVSS: v4.0 8.7 HIGH from 5d1c2695-1a31-4499-88ae-e847036fd7e3
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Problem Types: CWE-755 | CWE-755 CWE-755
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 4.0 | 5d1c2695-1a31-4499-88ae-e847036fd7e3 | Secondary | 8.7 | HIGH | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/C... |
| 4.0 | CNA | DECLARED | 8.7 | HIGH | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N |
| 3.1 | [email protected] | Primary | 7.5 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
CVSS v4.0 Breakdown
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS v3.1 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Application | Watchguard | Single Sign-on Client | All | All | All | All |
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | WatchGuard | SSO Client | affected 12.0 12.7 semver | Windows |
| ADP | Watchguard | Single Sign-on Client | affected 12.7 semver | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| psirt.watchguard.com/CVE-2024-6594 | 5d1c2695-1a31-4499-88ae-e847036fd7e3 | psirt.watchguard.com | |
| www.watchguard.com/wgrd-psirt/advisory/wgsa-2024-00016 | 5d1c2695-1a31-4499-88ae-e847036fd7e3 | www.watchguard.com | Vendor Advisory |
| www.redteam-pentesting.de/advisories/rt-sa-2024-008 | 5d1c2695-1a31-4499-88ae-e847036fd7e3 | www.redteam-pentesting.de | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Additional Advisory Data
Workarounds
CNA: An attacker must have already established network access to exploit this vulnerability. WatchGuard recommends using Windows Firewall rules to restrict TCP port 4116 network access to the Single Sign-On Client to only allow connections from the Authentication Gateway (SSO Agent). Windows administrators can use Group Policy objects to add Windows firewall rules to their endpoints.
Exploits
CNA: WatchGuard is not aware of any exploitation of this vulnerability in the wild.