CVE-2018-5455 Auth bypass in Moxa OnCell G3100-HSPA Series
Attackers can bypass authentication via brute force on weak cookie validation to gain unauthorized access to Moxa OnCell device functions.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2018-5455?
CVE-2018-5455 is a critical authentication bypass vulnerability in Moxa OnCell G3100-HSPA Series, published on 5 Mar 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Which versions are affected by CVE-2018-5455?
It affects 4 products.
Products include Moxa Oncell G3110-Hspa-T Firmware, Moxa Oncell G3110-Hspa Firmware, Moxa Oncell G3150-Hspa-T Firmware, Moxa Oncell G3150-Hspa Firmware.
How do I fix CVE-2018-5455?
No fix has been published for CVE-2018-5455 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2018-5455 being exploited?
There is no known exploitation of CVE-2018-5455 in the wild and no public exploit code.
Other vulnerabilities in Moxa OnCell G3100-HSPA Series
Sources
Also known as GHSA-xp2r-3x9c-rvxq.