9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5 High
CVSS2
Access Vector
Access Complexity
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
0.093 Low
EPSS
Percentile
94.7%
CVSS v3 9.8
ATTENTION: Remotely exploitable/low skill level to exploit
Vendor: Advantech
Equipment: WebAccess
Vulnerabilities: SQL Injection, Improper Authorization, Path Traversal, Heap-based Buffer Overflow, Stack-based Buffer Overflow, Untrusted Pointer Dereference, Improper Privilege Management, and External Control of File Name or Path
Successful exploitation of these vulnerabilities could allow an attacker to disclose sensitive information from the host and/or target, execute arbitrary code, or delete files.
The following versions of WebAccess products are affected:
Several SQL injection vulnerabilities have been identified, which may allow an attacker to disclose sensitive information from the host.
CVE-2018-7501 has been assigned to this vulnerability. A CVSS v3 base score of 5.3 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N).
An information exposure vulnerability through directory listing has been identified, which may allow an attacker to find important files that are not normally visible.
CVE-2018-10590 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).
A TFTP application has unrestricted file uploads to the web application without authorization, which may allow an attacker to execute arbitrary code.
CVE-2018-7505 has been assigned to this vulnerability. A CVSS v3 base score of 9.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).
A path transversal vulnerability has been identified, which may allow an attacker to disclose sensitive information on the target.
CVE-2018-7503 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).
A path transversal vulnerability has been identified, which may allow an attacker to execute arbitrary code.
CVE-2018-10589 has been assigned to this vulnerability. A CVSS v3 base score of 9.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).
Several stack-based buffer overflow vulnerabilities have been identified, which may allow an attacker to execute arbitrary code.
CVE-2018-7499 has been assigned to this vulnerability. A CVSS v3 base score of 9.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).
A heap-based buffer overflow vulnerability has been identified, which may allow an attacker to execute arbitrary code.
CVE-2018-8845 has been assigned to this vulnerability. A CVSS v3 base score of 9.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).
Several untrusted pointer dereference vulnerabilities have been identified, which may allow an attacker to execute arbitrary code.
CVE-2018-7497 has been assigned to this vulnerability. A CVSS v3 base score of 9.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).
An external control of file name or path vulnerability has been identified, which may allow an attacker to delete files.
CVE-2018-7495 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).
An origin validation error vulnerability has been identified, which may allow an attacker to create a malicious web site, steal session cookies, and access data of authenticated users.
CVE-2018-10591 has been assigned to this vulnerability. A CVSS v3 base score of 6.1 has been calculated; the CVSS vector string is (AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:N/A:N).
An improper privilege management vulnerability may allow an authenticated user to modify files when read access should only be given to the user.
CVE-2018-8841 has been assigned to this vulnerability. A CVSS v3 base score of 8.4 has been calculated; the CVSS vector string is (AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).
Mat Powell and Fritz Sands of Trend Microβs Zero Day Initiative; Ariele Caltabiano (kimiya) and rgod working with Trend Microβs Zero Day Initiative; Steven Seeley of Offensive Security, working with Trend Microβs Zero Day Initiative; and Donato Onofri and Simone Onofri of Business Integration Partners S.p.A. reported these vulnerabilities to NCCIC.
Advantech has released Version 8.3.1 of WebAccess to address the reported vulnerabilities. Users can download the latest version of WebAccess at the following location:
http://support.advantech.com/support/DownloadSRDetail_New.aspx?SR_ID=1-MS9MJV&Doc_Source=Download
NCCIC recommends users take defensive measures to minimize the risk of exploitation of this vulnerability. Specifically, users should:
NCCIC reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.
NCCIC also provides a section for control systems security recommended practices on the ICS-CERT web page. Several recommended practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.
Additional mitigation guidance and recommended practices are publicly available in the NCCIC Technical Information Paper, ICS-TIP-12-146-01BβTargeted Cyber Intrusion Detection and Mitigation Strategies, that is available for download from the ICS-CERT web site.
Organizations observing any suspected malicious activity should follow their established internal procedures and report their findings to NCCIC for tracking and correlation against other incidents.
No known public exploits specifically target these vulnerabilities.
support.advantech.com/support/DownloadSRDetail_New.aspx?SR_ID=1-MS9MJV&Doc_Source=Download
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2018-10589
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2018-10590
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2018-10591
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2018-7495
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2018-7497
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2018-7499
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2018-7501
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2018-7503
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2018-7505
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2018-8841
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2018-8845
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cwe.mitre.org/data/definitions/822.html
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9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5 High
CVSS2
Access Vector
Access Complexity
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
0.093 Low
EPSS
Percentile
94.7%