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ID

VAR-202107-1337


CVE

CVE-2021-31893


TITLE

Classic buffer overflow vulnerability in multiple Siemens products

Trust: 0.8

sources: JVNDB: JVNDB-2021-012063

DESCRIPTION

A vulnerability has been identified in SIMATIC PCS 7 V8.2 and earlier (All versions), SIMATIC PCS 7 V9.0 (All versions < V9.0 SP3), SIMATIC PDM (All versions < V9.2), SIMATIC STEP 7 V5.X (All versions < V5.6 SP2 HF3), SINAMICS STARTER (containing STEP 7 OEM version) (All versions < V5.4 HF2). The affected software contains a buffer overflow vulnerability while handling certain files that could allow a local attacker to trigger a denial-of-service condition or potentially lead to remote code execution. Multiple Siemens products contain a classic buffer overflow vulnerability.Information is obtained, information is tampered with, and service operation is interrupted. (DoS) It may be in a state. Siemens SIMATIC PCS 7 is a set of process control system of Germany Siemens (Siemens) company. SIMATIC STEP 7 V5.X is the classic engineering software for configuring and programming SIMATIC S7-300/S7-400/C7/WinAC controllers. STARTER is the drive engineering tool for parameterization and commissioning. Pillow is a Python-based image processing library. There is currently no information about this vulnerability, please feel free to follow CNNVD or manufacturer announcements

Trust: 2.79

sources: NVD: CVE-2021-31893 // JVNDB: JVNDB-2021-012063 // CNVD: CNVD-2021-54360 // CNNVD: CNNVD-202104-975 // VULMON: CVE-2021-31893

IOT TAXONOMY

category:['ICS']sub_category: -

Trust: 0.6

sources: CNVD: CNVD-2021-54360

AFFECTED PRODUCTS

vendor:siemensmodel:simatic pcsscope:lteversion:8.2

Trust: 1.0

vendor:siemensmodel:simatic pdmscope:ltversion:9.2

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vendor:siemensmodel:simatic pcsscope:eqversion:9.0

Trust: 1.0

vendor:siemensmodel:sinamics starterscope:ltversion:5.4

Trust: 1.0

vendor:siemensmodel:sinamics starterscope:eqversion:5.4

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vendor:siemensmodel:simatic step 7scope:lteversion:5.6

Trust: 1.0

vendor:シーメンスmodel:simatic pdmscope: - version: -

Trust: 0.8

vendor:シーメンスmodel:sinamics starterscope: - version: -

Trust: 0.8

vendor:シーメンスmodel:simatic pcsscope: - version: -

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vendor:シーメンスmodel:simatic step 7scope: - version: -

Trust: 0.8

vendor:siemensmodel:simatic pcsscope:eqversion:7<=v8.2

Trust: 0.6

vendor:siemensmodel:simatic pcs sp3scope:eqversion:7<v9.0

Trust: 0.6

vendor:siemensmodel:simatic pdmscope:ltversion:v9.2

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vendor:siemensmodel:simatic step sp2 hf3scope:eqversion:7v5.x<v5.6

Trust: 0.6

vendor:siemensmodel:sinamics starter hf2scope:eqversion:7<v5.4

Trust: 0.6

sources: CNVD: CNVD-2021-54360 // JVNDB: JVNDB-2021-012063 // NVD: CVE-2021-31893

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov: CVE-2021-31893
value: HIGH

Trust: 1.0

NVD: CVE-2021-31893
value: HIGH

Trust: 0.8

CNVD: CNVD-2021-54360
value: HIGH

Trust: 0.6

CNNVD: CNNVD-202104-975
value: MEDIUM

Trust: 0.6

CNNVD: CNNVD-202107-690
value: HIGH

Trust: 0.6

nvd@nist.gov: CVE-2021-31893
severity: HIGH
baseScore: 7.2
vectorString: AV:L/AC:L/AU:N/C:C/I:C/A:C
accessVector: LOCAL
accessComplexity: LOW
authentication: NONE
confidentialityImpact: COMPLETE
integrityImpact: COMPLETE
availabilityImpact: COMPLETE
exploitabilityScore: 3.9
impactScore: 10.0
acInsufInfo: NONE
obtainAllPrivilege: NONE
obtainUserPrivilege: NONE
obtainOtherPrivilege: NONE
userInteractionRequired: NONE
version: 2.0

Trust: 1.8

CNVD: CNVD-2021-54360
severity: HIGH
baseScore: 7.2
vectorString: AV:L/AC:L/AU:N/C:C/I:C/A:C
accessVector: LOCAL
accessComplexity: LOW
authentication: NONE
confidentialityImpact: COMPLETE
integrityImpact: COMPLETE
availabilityImpact: COMPLETE
exploitabilityScore: 3.9
impactScore: 10.0
acInsufInfo: NONE
obtainAllPrivilege: NONE
obtainUserPrivilege: NONE
obtainOtherPrivilege: NONE
userInteractionRequired: NONE
version: 2.0

Trust: 0.6

nvd@nist.gov: CVE-2021-31893
baseSeverity: HIGH
baseScore: 7.8
vectorString: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
attackVector: LOCAL
attackComplexity: LOW
privilegesRequired: LOW
userInteraction: NONE
scope: UNCHANGED
confidentialityImpact: HIGH
integrityImpact: HIGH
availabilityImpact: HIGH
exploitabilityScore: 1.8
impactScore: 5.9
version: 3.1

Trust: 1.0

NVD: CVE-2021-31893
baseSeverity: HIGH
baseScore: 7.8
vectorString: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
attackVector: LOCAL
attackComplexity: LOW
privilegesRequired: LOW
userInteraction: NONE
scope: UNCHANGED
confidentialityImpact: HIGH
integrityImpact: HIGH
availabilityImpact: HIGH
exploitabilityScore: NONE
impactScore: NONE
version: 3.0

Trust: 0.8

sources: CNVD: CNVD-2021-54360 // JVNDB: JVNDB-2021-012063 // CNNVD: CNNVD-202104-975 // CNNVD: CNNVD-202107-690 // NVD: CVE-2021-31893

PROBLEMTYPE DATA

problemtype:CWE-120

Trust: 1.0

problemtype:Classic buffer overflow (CWE-120) [ others ]

Trust: 0.8

sources: JVNDB: JVNDB-2021-012063 // NVD: CVE-2021-31893

THREAT TYPE

local

Trust: 0.6

sources: CNNVD: CNNVD-202107-690

TYPE

other

Trust: 1.2

sources: CNNVD: CNNVD-202104-975 // CNNVD: CNNVD-202107-690

PATCH

title:SSA-641963url:https://cert-portal.siemens.com/productcert/pdf/ssa-641963.pdf

Trust: 0.8

title:Patch for Remote Code Execution Vulnerabilities in Multiple SIMATIC Software Productsurl:https://www.cnvd.org.cn/patchInfo/show/280941

Trust: 0.6

title:Siemens SIMATIC PCS 7 Security vulnerabilitiesurl:http://www.cnnvd.org.cn/web/xxk/bdxqById.tag?id=156384

Trust: 0.6

title:Siemens Security Advisories: Siemens Security Advisoryurl:https://vulmon.com/vendoradvisory?qidtp=siemens_security_advisories&qid=e8f7c02a3431f34db7d68842e7177403

Trust: 0.1

sources: CNVD: CNVD-2021-54360 // VULMON: CVE-2021-31893 // JVNDB: JVNDB-2021-012063 // CNNVD: CNNVD-202107-690

EXTERNAL IDS

db:NVDid:CVE-2021-31893

Trust: 3.9

db:SIEMENSid:SSA-641963

Trust: 1.7

db:JVNDBid:JVNDB-2021-012063

Trust: 0.8

db:SIEMENSid:SSA-599968

Trust: 0.6

db:CNVDid:CNVD-2021-54360

Trust: 0.6

db:CS-HELPid:SB2021041363

Trust: 0.6

db:CNNVDid:CNNVD-202104-975

Trust: 0.6

db:CS-HELPid:SB2021071420

Trust: 0.6

db:AUSCERTid:ESB-2021.2399

Trust: 0.6

db:CNNVDid:CNNVD-202107-690

Trust: 0.6

db:VULMONid:CVE-2021-31893

Trust: 0.1

sources: CNVD: CNVD-2021-54360 // VULMON: CVE-2021-31893 // JVNDB: JVNDB-2021-012063 // CNNVD: CNNVD-202104-975 // CNNVD: CNNVD-202107-690 // NVD: CVE-2021-31893

REFERENCES

url:https://cert-portal.siemens.com/productcert/pdf/ssa-641963.pdf

Trust: 1.7

url:https://nvd.nist.gov/vuln/detail/cve-2021-31893

Trust: 1.4

url:https://cert-portal.siemens.com/productcert/pdf/ssa-599968.pdf

Trust: 0.6

url:https://www.cybersecurity-help.cz/vdb/sb2021041363

Trust: 0.6

url:https://vigilance.fr/vulnerability/siemens-simatic-buffer-overflow-35867

Trust: 0.6

url:https://www.auscert.org.au/bulletins/esb-2021.2399

Trust: 0.6

url:https://www.cybersecurity-help.cz/vdb/sb2021071420

Trust: 0.6

url:https://cwe.mitre.org/data/definitions/120.html

Trust: 0.1

url:https://nvd.nist.gov

Trust: 0.1

url:https://cert-portal.siemens.com/productcert/txt/ssa-641963.txt

Trust: 0.1

sources: CNVD: CNVD-2021-54360 // VULMON: CVE-2021-31893 // JVNDB: JVNDB-2021-012063 // CNNVD: CNNVD-202104-975 // CNNVD: CNNVD-202107-690 // NVD: CVE-2021-31893

SOURCES

db:CNVDid:CNVD-2021-54360
db:VULMONid:CVE-2021-31893
db:JVNDBid:JVNDB-2021-012063
db:CNNVDid:CNNVD-202104-975
db:CNNVDid:CNNVD-202107-690
db:NVDid:CVE-2021-31893

LAST UPDATE DATE

2024-08-14T12:43:01.213000+00:00


SOURCES UPDATE DATE

db:CNVDid:CNVD-2021-54360date:2022-01-18T00:00:00
db:VULMONid:CVE-2021-31893date:2021-07-13T00:00:00
db:JVNDBid:JVNDB-2021-012063date:2022-08-23T03:34:00
db:CNNVDid:CNNVD-202104-975date:2021-04-14T00:00:00
db:CNNVDid:CNNVD-202107-690date:2021-08-09T00:00:00
db:NVDid:CVE-2021-31893date:2021-08-06T14:03:32.707

SOURCES RELEASE DATE

db:CNVDid:CNVD-2021-54360date:2021-07-24T00:00:00
db:VULMONid:CVE-2021-31893date:2021-07-13T00:00:00
db:JVNDBid:JVNDB-2021-012063date:2022-08-23T00:00:00
db:CNNVDid:CNNVD-202104-975date:2021-04-13T00:00:00
db:CNNVDid:CNNVD-202107-690date:2021-07-13T00:00:00
db:NVDid:CVE-2021-31893date:2021-07-13T11:15:09.527