Details of VAR-202007-0238

ID

VAR-202007-0238

CVE

CVE-2020-12497

TITLE

Phoenix Contact PC Worx and PC Worx Express Out-of-bounds write vulnerability in

Trust: 0.8

sources: JVNDB: JVNDB-2020-007564

DESCRIPTION

PLCopen XML file parsing in Phoenix Contact PC Worx and PC Worx Express version 1.87 and earlier can lead to a stack-based overflow. Manipulated PC Worx projects could lead to a remote code execution due to insufficient input data validation. (DoS) It may be put into a state. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Phoenix Contact Automationworx. 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 PLCOpen XML files. When parsing the pou element, the process does not properly validate the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Phoenix Contact PC Worx and Phoenix Contact PC Worx Express are both a set of programming software for PLC (programmable logic controller) of Phoenix Contact (Germany Phoenix Contact)

Trust: 3.51

sources: NVD: CVE-2020-12497 // JVNDB: JVNDB-2020-007564 // ZDI: ZDI-20-825 // ZDI: ZDI-21-398 // CNVD: CNVD-2020-38414 // VULMON: CVE-2020-12497

IOT TAXONOMY

category:

['ICS']

sub_category:

Trust: 0.6

sources: CNVD: CNVD-2020-38414

AFFECTED PRODUCTS

vendor:	phoenix contact	model:	automationworx	scope:	-	version:	-	Trust: 1.4
vendor:	phoenixcontact	model:	pc worx	scope:	lt	version:	1.87	Trust: 1.0
vendor:	phoenixcontact	model:	pc worx express	scope:	lte	version:	1.87	Trust: 1.0
vendor:	phoenix contact	model:	pc worx	scope:	eq	version:	1.87	Trust: 0.8
vendor:	phoenix contact	model:	pc worx express	scope:	eq	version:	1.87	Trust: 0.8
vendor:	phoenix	model:	contact pc worx	scope:	lte	version:	<=1.87	Trust: 0.6
vendor:	phoenix	model:	contact pc worx express	scope:	lte	version:	<=1.87	Trust: 0.6

sources: ZDI: ZDI-20-825 // ZDI: ZDI-21-398 // CNVD: CNVD-2020-38414 // JVNDB: JVNDB-2020-007564 // NVD: CVE-2020-12497

CVSS

SEVERITY

CVSSV2

CVSSV3

ZDI:	CVE-2020-12497
value:	HIGH
Trust: 1.4
nvd@nist.gov:	CVE-2020-12497
value:	HIGH
Trust: 1.0
info@cert.vde.com:	CVE-2020-12497
value:	HIGH
Trust: 1.0
NVD:	JVNDB-2020-007564
value:	HIGH
Trust: 0.8
CNVD:	CNVD-2020-38414
value:	MEDIUM
Trust: 0.6
CNNVD:	CNNVD-202007-072
value:	HIGH
Trust: 0.6
VULMON:	CVE-2020-12497
value:	MEDIUM
Trust: 0.1

nvd@nist.gov:	CVE-2020-12497
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: 1.1
NVD:	JVNDB-2020-007564
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:	NONE
impactScore:	NONE
acInsufInfo:	NONE
obtainAllPrivilege:	NONE
obtainUserPrivilege:	NONE
obtainOtherPrivilege:	NONE
userInteractionRequired:	NONE
version:	2.0
Trust: 0.8
CNVD:	CNVD-2020-38414
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-2020-12497
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
ZDI:	CVE-2020-12497
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: 1.4
NVD:	JVNDB-2020-007564
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

sources: ZDI: ZDI-20-825 // ZDI: ZDI-21-398 // CNVD: CNVD-2020-38414 // VULMON: CVE-2020-12497 // JVNDB: JVNDB-2020-007564 // CNNVD: CNNVD-202007-072 // NVD: CVE-2020-12497 // NVD: CVE-2020-12497

PROBLEMTYPE DATA

problemtype:	CWE-787	Trust: 1.8
problemtype:	CWE-121	Trust: 1.0

sources: JVNDB: JVNDB-2020-007564 // NVD: CVE-2020-12497

THREAT TYPE

local

Trust: 0.6

sources: CNNVD: CNNVD-202007-072

TYPE

buffer error

Trust: 0.6

sources: CNNVD: CNNVD-202007-072

CONFIGURATIONS

sources: JVNDB: JVNDB-2020-007564

PATCH

title:	Top Page	url:	https://www.phoenixcontact.com/online/portal/pi?1dmy&urile=wcm%3apath%3a/pien/web/home	Trust: 0.8
title:	Phoenix Contact has issued an update to correct this vulnerability.	url:	https://us-cert.cisa.gov/ics/advisories/icsa-20-191-01	Trust: 0.7
title:	-	url:	https://us-cert.cisa.gov/ics/advisories/icsa-20-191-01https://cert.vde.com/en-us/advisories/vde-2020-023	Trust: 0.7

sources: ZDI: ZDI-20-825 // ZDI: ZDI-21-398 // JVNDB: JVNDB-2020-007564

EXTERNAL IDS

db:	NVD	id:	CVE-2020-12497	Trust: 4.5
db:	CERT@VDE	id:	VDE-2020-023	Trust: 2.5
db:	ZDI	id:	ZDI-20-825	Trust: 2.4
db:	ZDI	id:	ZDI-21-398	Trust: 2.4
db:	ICS CERT	id:	ICSA-20-191-01	Trust: 1.4
db:	JVN	id:	JVNVU97113078	Trust: 0.8
db:	JVNDB	id:	JVNDB-2020-007564	Trust: 0.8
db:	ZDI_CAN	id:	ZDI-CAN-10147	Trust: 0.7
db:	ZDI_CAN	id:	ZDI-CAN-12244	Trust: 0.7
db:	CNVD	id:	CNVD-2020-38414	Trust: 0.6
db:	NSFOCUS	id:	47401	Trust: 0.6
db:	NSFOCUS	id:	47118	Trust: 0.6
db:	NSFOCUS	id:	47079	Trust: 0.6
db:	AUSCERT	id:	ESB-2020.2365	Trust: 0.6
db:	CNNVD	id:	CNNVD-202007-072	Trust: 0.6
db:	VULMON	id:	CVE-2020-12497	Trust: 0.1

REFERENCES

url:	https://cert.vde.com/de-de/advisories/vde-2020-023	Trust: 2.5
url:	https://www.zerodayinitiative.com/advisories/zdi-21-398/	Trust: 2.4
url:	https://www.zerodayinitiative.com/advisories/zdi-20-825/	Trust: 2.3
url:	https://us-cert.cisa.gov/ics/advisories/icsa-20-191-01	Trust: 2.1
url:	https://nvd.nist.gov/vuln/detail/cve-2020-12497	Trust: 2.0
url:	https://cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2020-12497	Trust: 0.8
url:	https://jvn.jp/vu/jvnvu97113078/	Trust: 0.8
url:	https://us-cert.cisa.gov/ics/advisories/icsa-20-191-01https://cert.vde.com/en-us/advisories/vde-2020-023	Trust: 0.7
url:	http://www.nsfocus.net/vulndb/47401	Trust: 0.6
url:	http://www.nsfocus.net/vulndb/47118	Trust: 0.6
url:	http://www.nsfocus.net/vulndb/47079	Trust: 0.6
url:	https://www.auscert.org.au/bulletins/esb-2020.2365/	Trust: 0.6
url:	https://cwe.mitre.org/data/definitions/787.html	Trust: 0.1
url:	https://nvd.nist.gov	Trust: 0.1

CREDITS

Natnael Samson (@NattiSamson)

Trust: 1.4

sources: ZDI: ZDI-20-825 // ZDI: ZDI-21-398

SOURCES

db:	ZDI	id:	ZDI-20-825
db:	ZDI	id:	ZDI-21-398
db:	CNVD	id:	CNVD-2020-38414
db:	VULMON	id:	CVE-2020-12497
db:	JVNDB	id:	JVNDB-2020-007564
db:	CNNVD	id:	CNNVD-202007-072
db:	NVD	id:	CVE-2020-12497

LAST UPDATE DATE

2024-11-23T22:05:29.362000+00:00

SOURCES UPDATE DATE

db:	ZDI	id:	ZDI-20-825	date:	2020-07-10T00:00:00
db:	ZDI	id:	ZDI-21-398	date:	2021-04-16T00:00:00
db:	CNVD	id:	CNVD-2020-38414	date:	2020-07-13T00:00:00
db:	VULMON	id:	CVE-2020-12497	date:	2021-03-31T00:00:00
db:	JVNDB	id:	JVNDB-2020-007564	date:	2020-08-17T00:00:00
db:	CNNVD	id:	CNNVD-202007-072	date:	2021-04-01T00:00:00
db:	NVD	id:	CVE-2020-12497	date:	2024-11-21T04:59:48.283

SOURCES RELEASE DATE

db:	ZDI	id:	ZDI-20-825	date:	2020-07-10T00:00:00
db:	ZDI	id:	ZDI-21-398	date:	2021-03-31T00:00:00
db:	CNVD	id:	CNVD-2020-38414	date:	2020-07-13T00:00:00
db:	VULMON	id:	CVE-2020-12497	date:	2020-07-01T00:00:00
db:	JVNDB	id:	JVNDB-2020-007564	date:	2020-08-17T00:00:00
db:	CNNVD	id:	CNNVD-202007-072	date:	2020-07-01T00:00:00
db:	NVD	id:	CVE-2020-12497	date:	2020-07-01T16:15:12.853