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Critical severity · published Mar 5, 2018
CVE-2018-5455
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
9.8
CVSS
1.6%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.6% · higher than 75% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OG
Oncell G3110-hspa Firmware · Moxa
through 1.4 · source: NVD
OG
Oncell G3110-hspa-t Firmware · Moxa
through 1.4 · source: NVD
OG
Oncell G3150-hspa Firmware · Moxa
through 1.4 · source: NVD
OG
Oncell G3150-hspa-t Firmware · Moxa
through 1.4 · source: NVD
Affected product
OG
Oncell G3110-hspa Firmware
Moxa
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-5455
CVE.org
https://www.cve.org/CVERecord?id=CVE-2018-5455
Patch
https://ics-cert.us-cert.gov/advisories/ICSA-18-060-02
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