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ID

VAR-201708-1577


TITLE

Advantech WebAccess RtspVapgDecoderNew2 PMSettingData3D High Stack Buffer Overflow Remote Code Execution Vulnerability

Trust: 1.0

sources: IVD: d5474ef5-dad6-4722-bd07-e73257c4f684 // IVD: 7d74524f-463f-11e9-b2e4-000c29342cb1 // CNVD: CNVD-2017-19443

DESCRIPTION

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Advantech WebAccess. 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 RtspVapgDecoderNew2.dll. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a stack-based buffer. An attacker can leverage this vulnerability to execute arbitrary code under the context of the process. Advantech WebAccess is a suite of browser-based HMI/SCADA software from Advantech. The software supports dynamic graphical display and real-time data control, and provides the ability to remotely control and manage automation equipment. The length of the data provided by the user is not verified

Trust: 1.53

sources: ZDI: ZDI-17-562 // CNVD: CNVD-2017-19443 // IVD: d5474ef5-dad6-4722-bd07-e73257c4f684 // IVD: 7d74524f-463f-11e9-b2e4-000c29342cb1

IOT TAXONOMY

category:['ICS']sub_category: -

Trust: 1.0

sources: IVD: d5474ef5-dad6-4722-bd07-e73257c4f684 // IVD: 7d74524f-463f-11e9-b2e4-000c29342cb1 // CNVD: CNVD-2017-19443

AFFECTED PRODUCTS

vendor:advantechmodel:webaccessscope: - version: -

Trust: 1.3

vendor:advantechmodel:webaccessscope:eqversion:*

Trust: 0.4

sources: IVD: d5474ef5-dad6-4722-bd07-e73257c4f684 // IVD: 7d74524f-463f-11e9-b2e4-000c29342cb1 // ZDI: ZDI-17-562 // CNVD: CNVD-2017-19443

CVSS

SEVERITY

CVSSV2

CVSSV3

ZDI: ZDI-17-562
value: HIGH

Trust: 0.7

CNVD: CNVD-2017-19443
value: HIGH

Trust: 0.6

IVD: d5474ef5-dad6-4722-bd07-e73257c4f684
value: HIGH

Trust: 0.2

IVD: 7d74524f-463f-11e9-b2e4-000c29342cb1
value: HIGH

Trust: 0.2

ZDI: ZDI-17-562
severity: HIGH
baseScore: 7.5
vectorString: AV:N/AC:L/AU:N/C:P/I:P/A:P
accessVector: NETWORK
accessComplexity: LOW
authentication: NONE
confidentialityImpact: PARTIAL
integrityImpact: PARTIAL
availabilityImpact: PARTIAL
exploitabilityScore: 10.0
impactScore: 6.4
acInsufInfo: NONE
obtainAllPrivilege: NONE
obtainUserPrivilege: NONE
obtainOtherPrivilege: NONE
userInteractionRequired: NONE
version: 2.0

Trust: 0.7

CNVD: CNVD-2017-19443
severity: HIGH
baseScore: 7.5
vectorString: AV:N/AC:L/AU:N/C:P/I:P/A:P
accessVector: NETWORK
accessComplexity: LOW
authentication: NONE
confidentialityImpact: PARTIAL
integrityImpact: PARTIAL
availabilityImpact: PARTIAL
exploitabilityScore: 10.0
impactScore: 6.4
acInsufInfo: NONE
obtainAllPrivilege: NONE
obtainUserPrivilege: NONE
obtainOtherPrivilege: NONE
userInteractionRequired: NONE
version: 2.0

Trust: 0.6

IVD: d5474ef5-dad6-4722-bd07-e73257c4f684
severity: HIGH
baseScore: 7.5
vectorString: AV:N/AC:L/AU:N/C:P/I:P/A:P
accessVector: NETWORK
accessComplexity: LOW
authentication: NONE
confidentialityImpact: PARTIAL
integrityImpact: PARTIAL
availabilityImpact: PARTIAL
exploitabilityScore: 10.0
impactScore: 6.4
acInsufInfo: NONE
obtainAllPrivilege: NONE
obtainUserPrivilege: NONE
obtainOtherPrivilege: NONE
userInteractionRequired: NONE
version: 2.9 [IVD]

Trust: 0.2

IVD: 7d74524f-463f-11e9-b2e4-000c29342cb1
severity: HIGH
baseScore: 7.5
vectorString: AV:N/AC:L/AU:N/C:P/I:P/A:P
accessVector: NETWORK
accessComplexity: LOW
authentication: NONE
confidentialityImpact: PARTIAL
integrityImpact: PARTIAL
availabilityImpact: PARTIAL
exploitabilityScore: 10.0
impactScore: 6.4
acInsufInfo: NONE
obtainAllPrivilege: NONE
obtainUserPrivilege: NONE
obtainOtherPrivilege: NONE
userInteractionRequired: NONE
version: 2.9 [IVD]

Trust: 0.2

sources: IVD: d5474ef5-dad6-4722-bd07-e73257c4f684 // IVD: 7d74524f-463f-11e9-b2e4-000c29342cb1 // ZDI: ZDI-17-562 // CNVD: CNVD-2017-19443

TYPE

Buffer overflow

Trust: 0.4

sources: IVD: d5474ef5-dad6-4722-bd07-e73257c4f684 // IVD: 7d74524f-463f-11e9-b2e4-000c29342cb1

PATCH

title:This vulnerability is being disclosed publicly without a patch in accordance with the ZDI 120 day deadline.11/08/2016, 11/09/2016, 11/10/2016 and 11/15/2016 - ZDI disclosed the reports, 44 in all, to ICS-CERT11/09/2016 - The vendor acknowledged receipt of the report through ICS-CERT and ICS-CERT provided ICS-VU-71410304/27/2017 - ICS-CERT notified ZDI these might be fixed in the latest version and asked would ZDI re-test05/03/2017 - ZDI replied that we cannot do the testing for AdvantechICS-CERT did not respond06/23/2017 - ZDI wrote to ICS-CERT requesting any available update07/31/2017 - ZDI wrote to ICS-CERT requesting any available update08/01/2017 - ZDI wrote to ICS-CERT advising of the intent to 0-day-- Mitigation:The killbit can be set on this control to disable scripting within Internet Explorer by modifying the data value of the Compatibility Flags DWORD within the following location in the registry:HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\ActiveX Compatibility\73888E2B-FF04-416c-8847-984D7FC4507FIf the Compatibility Flags value is set to 0x00000400, the control can no longer be instantiated inside the browser.For more information, please see: url:http://support.microsoft.com/kb/240797

Trust: 0.7

sources: ZDI: ZDI-17-562

EXTERNAL IDS

db:ZDIid:ZDI-17-562

Trust: 1.3

db:CNVDid:CNVD-2017-19443

Trust: 1.0

db:ZDI_CANid:ZDI-CAN-4082

Trust: 0.7

db:IVDid:D5474EF5-DAD6-4722-BD07-E73257C4F684

Trust: 0.2

db:IVDid:7D74524F-463F-11E9-B2E4-000C29342CB1

Trust: 0.2

sources: IVD: d5474ef5-dad6-4722-bd07-e73257c4f684 // IVD: 7d74524f-463f-11e9-b2e4-000c29342cb1 // ZDI: ZDI-17-562 // CNVD: CNVD-2017-19443

REFERENCES

url:http://support.microsoft.com/kb/240797

Trust: 0.7

url:http://www.zerodayinitiative.com/advisories/zdi-17-562/

Trust: 0.6

sources: ZDI: ZDI-17-562 // CNVD: CNVD-2017-19443

CREDITS

Anonymous

Trust: 0.7

sources: ZDI: ZDI-17-562

SOURCES

db:IVDid:d5474ef5-dad6-4722-bd07-e73257c4f684
db:IVDid:7d74524f-463f-11e9-b2e4-000c29342cb1
db:ZDIid:ZDI-17-562
db:CNVDid:CNVD-2017-19443

LAST UPDATE DATE

2022-05-17T01:46:25.048000+00:00


SOURCES UPDATE DATE

db:ZDIid:ZDI-17-562date:2017-08-07T00:00:00
db:CNVDid:CNVD-2017-19443date:2017-08-08T00:00:00

SOURCES RELEASE DATE

db:IVDid:d5474ef5-dad6-4722-bd07-e73257c4f684date:2017-08-08T00:00:00
db:IVDid:7d74524f-463f-11e9-b2e4-000c29342cb1date:2017-08-08T00:00:00
db:ZDIid:ZDI-17-562date:2017-08-07T00:00:00
db:CNVDid:CNVD-2017-19443date:2017-08-08T00:00:00