VDB-113484 · CVE-2018-5440 · BID 102909

3S-Smart CODESYS Web Server Request memory corruption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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8.2$0-$5k0.00

Summaryinfo

A vulnerability classified as critical was found in 3S-Smart CODESYS Web Server. This affects an unknown function. The manipulation as part of Request results in memory corruption. This vulnerability is cataloged as CVE-2018-5440. The attack may be launched remotely. There is no exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as critical, was found in 3S-Smart CODESYS Web Server (Web Server) (version unknown). Affected is an unknown function. The manipulation as part of a Request leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

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.

The bug was discovered 01/31/2018. The weakness was shared 02/15/2018 (Website). The advisory is shared for download at securityfocus.com. This vulnerability is traded as CVE-2018-5440 since 01/12/2018. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are neither technical details nor an exploit publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 15 days. During that time the estimated underground price was around $0-$5k. The commercial vulnerability scanner Qualys is able to test this issue with plugin 370781 (CODESYS Web Server Stack Based Buffer Overflow Vulnerability (ICSA-18-032-02)).

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 102909†). Once again VulDB remains the best source for vulnerability data.

Productinfo

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Vendor

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.4

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/12/2018 🔍
01/31/2018 +19 days 🔍
02/01/2018 +1 days 🔍
02/15/2018 +14 days 🔍
02/15/2018 +0 days 🔍
02/16/2018 +1 days 🔍
01/06/2020 +689 days 🔍

Sourcesinfo

Advisory: securityfocus.com⛔
Status: Not defined

CVE: CVE-2018-5440 (🔍)
GCVE (CVE): GCVE-0-2018-5440
GCVE (VulDB): GCVE-100-113484
SecurityFocus: 102909 - CODESYS Web Server CVE-2018-5440 Stack Based Buffer Overflow Vulnerability

Entryinfo

Created: 02/16/2018 12:59
Updated: 01/06/2020 13:27
Changes: 02/16/2018 12:59 (61), 01/06/2020 13:27 (3)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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