Vulnerability Name:

CVE-2018-5440 (CCN-138599)

Assigned:2018-01-31
Published:2018-01-31
Updated:2020-09-18
Summary: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.
CVSS v3 Severity:9.8 Critical (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
8.5 High (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
9.8 Critical (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
8.5 High (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
CVSS v2 Severity:7.5 High (CVSS v2 Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): Partial
10.0 High (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:C/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
Vulnerability Type:CWE-787
Vulnerability Consequences:Gain Access
References:Source: MITRE
Type: CNA
CVE-2018-5440

Source: CCN
Type: CODESYS Web site
CODESYS

Source: BID
Type: Third Party Advisory, VDB Entry
102909

Source: CCN
Type: BID-102909
CODESYS Web Server CVE-2018-5440 Stack Based Buffer Overflow Vulnerability

Source: XF
Type: UNKNOWN
3ssmart-cve20185440-bo(138599)

Source: CCN
Type: ICSA-18-032-02
3S-Smart Software Solutions GmbH CODESYS Web Server

Source: MISC
Type: Third Party Advisory, US Government Resource
https://ics-cert.us-cert.gov/advisories/ICSA-18-032-02

Vulnerable Configuration:Configuration 1:
  • cpe:/a:3s-software:codesys_runtime_system:*:*:*:*:*:*:*:* (Version < 1.1.9.19)
  • OR cpe:/a:3s-software:codesys_web_server:2.3:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    3s-software codesys runtime system *
    3s-software codesys web server 2.3