High severity · published Mar 5, 2019
CVE-2019-6520
Moxa IKS and EDS does not properly check authority on server side, which results in a read-only user being able to perform arbitrary configuration changes
7.5
CVSS
1.7%
EPSS
No
On KEV
Description
Moxa IKS and EDS does not properly check authority on server side, which results in a read-only user being able to perform arbitrary configuration changes.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.7% · higher than 77% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MI
Moxa IKS, EDS · ICS-CERT
IKS-G6824A series Versions 4.5 and prior, EDS-405A series Version 3.8 and prior, EDS-408A series Version 3.8 and prior, and EDS-510A series Version 3.8 and prior · source: vendor
EF
Eds-405a Firmware · Moxa
through 3.8 · source: NVD
EF
Eds-408a Firmware · Moxa
through 3.8 · source: NVD
EF
Eds-510a Firmware · Moxa
through 3.8 · source: NVD
IF
Iks-g6824a Firmware · Moxa
through 4.5 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-6520
CVE.org
https://www.cve.org/CVERecord?id=CVE-2019-6520
Third Party Advisory
http://www.securityfocus.com/bid/107178
Third Party Advisory
https://ics-cert.us-cert.gov/advisories/ICSA-19-057-01
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9.8
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9.8
CVE-2019-6557
Several buffer overflow vulnerabilities have been identified in Moxa IKS and EDS, which may allow remote code execution
9.8
CVE-2019-6524
Moxa IKS and EDS do not implement sufficient measures to prevent multiple failed authentication attempts, which may allow an attacker to discover passwords via brute force attack
9.1
CVE-2019-6522
Moxa IKS and EDS fails to properly check array bounds which may allow an attacker to read device memory on arbitrary addresses, and may allow an attacker to retrieve sensitive…
8.8
CVE-2019-6561
Cross-site request forgery has been identified in Moxa IKS and EDS, which may allow for the execution of unauthorized actions on the device