What is the CVSS score of CVE-2018-5455?

CVE-2018-5455 has a CVSS 3.0 base score of 9.8 (Critical). CVSS vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 1.6%.

Is there a patch available for CVE-2018-5455?

Yes, a patch is available for CVE-2018-5455. Update the affected software to the latest version immediately.

Oncell G3110 Hspa Firmware CVE-2018-5455

CRITICAL

Reliance on Cookies without Validation and Integrity Checking (CWE-565)

2018-03-05 ics-cert@hq.dhs.gov

Authentication Bypass Oncell G3110 Hspa Firmware Oncell G3110 Hspa T Firmware Oncell G3150 Hspa Firmware Oncell G3150 Hspa T Firmware

9.8

CVSS 3.0 · NVD

Severity by source

NVD PRIMARY

9.8 CRITICAL

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

CVE Published

Mar 05, 2018 - 17:29 nvd

CRITICAL 9.8

DescriptionNVD

A Reliance on Cookies without Validation and Integrity Checking issue was discovered in Moxa OnCell G3100-HSPA Series version 1.4 Build 16062919 and prior. The application allows a cookie parameter to consist of only digits, allowing an attacker to perform a brute force attack bypassing authentication and gaining access to device functions.

AnalysisAI

A Reliance on Cookies without Validation and Integrity Checking issue was discovered in Moxa OnCell G3100-HSPA Series version 1.4 Build 16062919 and prior. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity.

Technical ContextAI

This vulnerability is classified under CWE-565. A Reliance on Cookies without Validation and Integrity Checking issue was discovered in Moxa OnCell G3100-HSPA Series version 1.4 Build 16062919 and prior. The application allows a cookie parameter to consist of only digits, allowing an attacker to perform a brute force attack bypassing authentication and gaining access to device functions. Affected products include: Moxa Oncell G3110-Hspa Firmware, Moxa Oncell G3110-Hspa-T Firmware, Moxa Oncell G3150-Hspa Firmware, Moxa Oncell G3150-Hspa-T Firmware. Version information: version 1.4.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.