Vulnerability Details : CVE-2018-5440
A Stack-based Buffer Overflow issue was discovered in 3S-Smart CODESYS Web Server. Specifically: all Microsoft Windows (also WinCE) based CODESYS web servers running stand-alone Version 2.3, or as part of the CODESYS runtime system running prior to Version V1.1.9.19. A crafted request may cause a buffer overflow and could therefore execute arbitrary code on the web server or lead to a denial-of-service condition due to a crash in the web server.
Vulnerability category: OverflowMemory CorruptionExecute codeDenial of service
Products affected by CVE-2018-5440
- cpe:2.3:a:3s-software:codesys_runtime_system:*:*:*:*:*:*:*:*
- cpe:2.3:a:3s-software:codesys_web_server:2.3:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2018-5440
1.38%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 79 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2018-5440
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
7.5
|
HIGH | AV:N/AC:L/Au:N/C:P/I:P/A:P |
10.0
|
6.4
|
NIST | |
|
9.8
|
CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
3.9
|
5.9
|
NIST |
CWE ids for CVE-2018-5440
-
A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).Assigned by: ics-cert@hq.dhs.gov (Secondary)
-
The product writes data past the end, or before the beginning, of the intended buffer.Assigned by: nvd@nist.gov (Primary)
References for CVE-2018-5440
-
http://www.securityfocus.com/bid/102909
CODESYS Web Server CVE-2018-5440 Stack Based Buffer Overflow VulnerabilityThird Party Advisory;VDB Entry
-
https://ics-cert.us-cert.gov/advisories/ICSA-18-032-02
3S-Smart Software Solutions GmbH CODESYS Web Server | CISAThird Party Advisory;US Government Resource
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