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TwcertCVE-2020-3927

HistoryFeb 03, 2020 - 11:15 a.m.

CVE-2020-3927

2020-02-0311:15:12

CWE-552

twcert

web.nvd.nist.gov

cve

2020

3927

arbitrary file access

servisign

security plugin

nvd

vulnerability

api

parameter

CVSS2

8.5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

COMPLETE

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:N/I:C/A:P

CVSS3

8.3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H

AI Score

7.5

Confidence

High

EPSS

0.001

Percentile

30.9%

JSON

An arbitrary-file-access vulnerability exists in ServiSign security plugin, as long as the attackers learn the specific API function, they may access arbitrary files on target system via crafted API parameter.

Affected configurations

Nvd

Node

changingtecservisignRange≤1.0.19.0617

AND

microsoftwindowsMatch-

VendorProductVersionCPE
changingtecservisign*cpe:2.3:a:changingtec:servisign:*:*:*:*:*:*:*:*
microsoftwindows-cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
changingtec	servisign	*	cpe:2.3:a:changingtec:servisign::::::::
microsoft	windows	-	cpe:2.3:o:microsoft:windows:-:::::::*

CNA Affected

[
  {
    "product": "ServiSign Windows versions",
    "vendor": "CHANGING",
    "versions": [
      {
        "lessThanOrEqual": "1.0.19.0617",
        "status": "affected",
        "version": "0",
        "versionType": "custom"
      }
    ]
  }
]

References

tvn.twcert.org.tw/taiwanvn/TVN-201910007

www.chtsecurity.com/news/1179d48b-7609-4f67-9d7e-3bac2979c6ce

Social References

CVSS2

8.5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

COMPLETE

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:N/I:C/A:P

CVSS3

8.3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H

AI Score

7.5

Confidence

High

EPSS

0.001

Percentile

30.9%

JSON

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