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ID

VAR-202110-0993


CVE

CVE-2021-38434


TITLE

FATEK Automation WinProladder  Unexpected sign extension vulnerability in

Trust: 0.8

sources: JVNDB: JVNDB-2021-013915

DESCRIPTION

FATEK Automation WinProladder versions 3.30 and prior lacks proper validation of user-supplied data when parsing project files, which could result in an unexpected sign extension. An attacker could leverage this vulnerability to execute arbitrary code. (DoS) It may be in a state. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.The specific flaw exists within the parsing of PDW files. An unexpected sign extension can result in a write outside the bounds of an allocated buffer. FATEK Automation WinProladder is a PLC of China FATEK Automation Company

Trust: 2.88

sources: NVD: CVE-2021-38434 // JVNDB: JVNDB-2021-013915 // ZDI: ZDI-21-1168 // CNVD: CNVD-2021-83605 // VULMON: CVE-2021-38434

IOT TAXONOMY

category:['ICS']sub_category: -

Trust: 0.6

sources: CNVD: CNVD-2021-83605

AFFECTED PRODUCTS

vendor:fatekmodel:winproladderscope:lteversion:3.30

Trust: 1.0

vendor:fatek automationmodel:winproladderscope:eqversion: -

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vendor:fatek automationmodel:winproladderscope:lteversion:3.30 and earlier

Trust: 0.8

vendor:fatek automationmodel:winproladderscope: - version: -

Trust: 0.7

vendor:fatekmodel:automation winproladderscope:lteversion:<=3.30

Trust: 0.6

sources: ZDI: ZDI-21-1168 // CNVD: CNVD-2021-83605 // JVNDB: JVNDB-2021-013915 // NVD: CVE-2021-38434

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov: CVE-2021-38434
value: HIGH

Trust: 1.0

ics-cert@hq.dhs.gov: CVE-2021-38434
value: HIGH

Trust: 1.0

NVD: CVE-2021-38434
value: HIGH

Trust: 0.8

ZDI: CVE-2021-38434
value: HIGH

Trust: 0.7

CNVD: CNVD-2021-83605
value: MEDIUM

Trust: 0.6

CNNVD: CNNVD-202110-407
value: HIGH

Trust: 0.6

VULMON: CVE-2021-38434
value: MEDIUM

Trust: 0.1

nvd@nist.gov: CVE-2021-38434
severity: MEDIUM
baseScore: 6.8
vectorString: AV:N/AC:M/AU:N/C:P/I:P/A:P
accessVector: NETWORK
accessComplexity: MEDIUM
authentication: NONE
confidentialityImpact: PARTIAL
integrityImpact: PARTIAL
availabilityImpact: PARTIAL
exploitabilityScore: 8.6
impactScore: 6.4
acInsufInfo: NONE
obtainAllPrivilege: NONE
obtainUserPrivilege: NONE
obtainOtherPrivilege: NONE
userInteractionRequired: NONE
version: 2.0

Trust: 1.9

CNVD: CNVD-2021-83605
severity: MEDIUM
baseScore: 6.8
vectorString: AV:N/AC:M/AU:N/C:P/I:P/A:P
accessVector: NETWORK
accessComplexity: MEDIUM
authentication: NONE
confidentialityImpact: PARTIAL
integrityImpact: PARTIAL
availabilityImpact: PARTIAL
exploitabilityScore: 8.6
impactScore: 6.4
acInsufInfo: NONE
obtainAllPrivilege: NONE
obtainUserPrivilege: NONE
obtainOtherPrivilege: NONE
userInteractionRequired: NONE
version: 2.0

Trust: 0.6

nvd@nist.gov: CVE-2021-38434
baseSeverity: HIGH
baseScore: 7.8
vectorString: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
attackVector: LOCAL
attackComplexity: LOW
privilegesRequired: NONE
userInteraction: REQUIRED
scope: UNCHANGED
confidentialityImpact: HIGH
integrityImpact: HIGH
availabilityImpact: HIGH
exploitabilityScore: 1.8
impactScore: 5.9
version: 3.1

Trust: 2.0

OTHER: JVNDB-2021-013915
baseSeverity: HIGH
baseScore: 7.8
vectorString: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
attackVector: LOCAL
attackComplexity: LOW
privilegesRequired: NONE
userInteraction: REQUIRED
scope: UNCHANGED
confidentialityImpact: HIGH
integrityImpact: HIGH
availabilityImpact: HIGH
exploitabilityScore: NONE
impactScore: NONE
version: 3.0

Trust: 0.8

ZDI: CVE-2021-38434
baseSeverity: HIGH
baseScore: 7.8
vectorString: AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
attackVector: LOCAL
attackComplexity: LOW
privilegesRequired: NONE
userInteraction: REQUIRED
scope: UNCHANGED
confidentialityImpact: HIGH
integrityImpact: HIGH
availabilityImpact: HIGH
exploitabilityScore: 1.8
impactScore: 5.9
version: 3.0

Trust: 0.7

sources: ZDI: ZDI-21-1168 // CNVD: CNVD-2021-83605 // VULMON: CVE-2021-38434 // JVNDB: JVNDB-2021-013915 // CNNVD: CNNVD-202110-407 // NVD: CVE-2021-38434 // NVD: CVE-2021-38434

PROBLEMTYPE DATA

problemtype:CWE-194

Trust: 1.0

problemtype:unexpected sign extension (CWE-194) [ others ]

Trust: 0.8

sources: JVNDB: JVNDB-2021-013915 // NVD: CVE-2021-38434

THREAT TYPE

local

Trust: 0.6

sources: CNNVD: CNNVD-202110-407

TYPE

other

Trust: 0.6

sources: CNNVD: CNNVD-202110-407

PATCH

title:Top Pageurl:https://www.fatek.com/en

Trust: 0.8

title:Fatek Automation has issued an update to correct this vulnerability.url:https://us-cert.cisa.gov/ics/advisories/icsa-21-280-06

Trust: 0.7

title:FATEK Automation WinProladder Security vulnerabilitiesurl:http://www.cnnvd.org.cn/web/xxk/bdxqById.tag?id=165078

Trust: 0.6

sources: ZDI: ZDI-21-1168 // JVNDB: JVNDB-2021-013915 // CNNVD: CNNVD-202110-407

EXTERNAL IDS

db:NVDid:CVE-2021-38434

Trust: 4.6

db:ICS CERTid:ICSA-21-280-06

Trust: 3.1

db:ZDIid:ZDI-21-1168

Trust: 1.4

db:JVNid:JVNVU93626160

Trust: 0.8

db:JVNDBid:JVNDB-2021-013915

Trust: 0.8

db:ZDI_CANid:ZDI-CAN-14112

Trust: 0.7

db:CNVDid:CNVD-2021-83605

Trust: 0.6

db:AUSCERTid:ESB-2021.3351

Trust: 0.6

db:CS-HELPid:SB2021100805

Trust: 0.6

db:CNNVDid:CNNVD-202110-407

Trust: 0.6

db:VULMONid:CVE-2021-38434

Trust: 0.1

sources: ZDI: ZDI-21-1168 // CNVD: CNVD-2021-83605 // VULMON: CVE-2021-38434 // JVNDB: JVNDB-2021-013915 // CNNVD: CNNVD-202110-407 // NVD: CVE-2021-38434

REFERENCES

url:https://us-cert.cisa.gov/ics/advisories/icsa-21-280-06

Trust: 3.6

url:https://nvd.nist.gov/vuln/detail/cve-2021-38434

Trust: 1.4

url:http://jvn.jp/vu/jvnvu93626160/index.html

Trust: 0.8

url:https://www.cisa.gov/uscert/ics/advisories/icsa-21-280-06

Trust: 0.8

url:https://www.zerodayinitiative.com/advisories/zdi-21-1168/

Trust: 0.7

url:https://www.auscert.org.au/bulletins/esb-2021.3351

Trust: 0.6

url:https://www.cybersecurity-help.cz/vdb/sb2021100805

Trust: 0.6

url:https://cwe.mitre.org/data/definitions/194.html

Trust: 0.1

url:https://nvd.nist.gov

Trust: 0.1

sources: ZDI: ZDI-21-1168 // CNVD: CNVD-2021-83605 // VULMON: CVE-2021-38434 // JVNDB: JVNDB-2021-013915 // CNNVD: CNNVD-202110-407 // NVD: CVE-2021-38434

CREDITS

xina1i

Trust: 0.7

sources: ZDI: ZDI-21-1168

SOURCES

db:ZDIid:ZDI-21-1168
db:CNVDid:CNVD-2021-83605
db:VULMONid:CVE-2021-38434
db:JVNDBid:JVNDB-2021-013915
db:CNNVDid:CNNVD-202110-407
db:NVDid:CVE-2021-38434

LAST UPDATE DATE

2024-08-14T13:23:18.860000+00:00


SOURCES UPDATE DATE

db:ZDIid:ZDI-21-1168date:2021-10-14T00:00:00
db:CNVDid:CNVD-2021-83605date:2022-01-18T00:00:00
db:VULMONid:CVE-2021-38434date:2021-10-21T00:00:00
db:JVNDBid:JVNDB-2021-013915date:2022-09-29T07:22:00
db:CNNVDid:CNNVD-202110-407date:2021-10-25T00:00:00
db:NVDid:CVE-2021-38434date:2021-10-21T20:36:01.383

SOURCES RELEASE DATE

db:ZDIid:ZDI-21-1168date:2021-10-14T00:00:00
db:CNVDid:CNVD-2021-83605date:2021-10-07T00:00:00
db:VULMONid:CVE-2021-38434date:2021-10-18T00:00:00
db:JVNDBid:JVNDB-2021-013915date:2022-09-29T00:00:00
db:CNNVDid:CNNVD-202110-407date:2021-10-07T00:00:00
db:NVDid:CVE-2021-38434date:2021-10-18T13:15:09.697