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CVE-2018-2477 XML External Entity (XXE) vulnerability in SAP NetWeaver Knowledge Management XMLForms, SAP security note 2661740

Description

Knowledge Management (XMLForms) in SAP NetWeaver does not sufficiently validate an XML document accepted from an untrusted source.

Some well-known impacts of Missing XML Validation vulnerability are –

  • arbitrary files retrieval from the server
  • denial-of-service conditions in successful exploits

CVSS Information

CVSS v3 Base Score: 6.5 / 10
CVSS v3 Base Vector:

AV : Attack Vector (Related exploit range)

Network (N)

AC : Attack Complexity (Required attack complexity)

Low (L)

PR : Privileges Required (Level of privileges needed to exploit)

Low (L)

UI : User Interaction (Required user participation)

None (N)

S : Scope (Change in scope due to impact caused to components beyond the vulnerable component)

Unchanged (U)

C : Impact to Confidentiality

High (H)

I : Impact to Integrity

None (N)

A : Impact to Availability

None (N)

SAP provides this CVSS v3 base score as an estimate of the risk posed by the issue reported in this note. This estimate does not take into account your own system configuration or operational environment. It is not intended to replace any risk assessments you are advised to conduct when deciding on the applicability or priority of this SAP security note. For more information, see the FAQ section at https://support.sap.com/securitynotes.

Available fix and Supported packages

  • KMC-CM | 7.30 | 7.30
  • KMC-CM | 7.31 | 7.31
  • KMC-CM | 7.40 | 7.40
  • KMC-CM | 7.50 | 7.50
  • KMC CONTENT MANAGEMENT 7.30 | SP015 | 000008
  • KMC CONTENT MANAGEMENT 7.30 | SP016 | 000006
  • KMC CONTENT MANAGEMENT 7.30 | SP017 | 000004
  • KMC CONTENT MANAGEMENT 7.30 | SP018 | 000001
  • KMC CONTENT MANAGEMENT 7.30 | SP019 | 000000
  • KMC CONTENT MANAGEMENT 7.31 | SP020 | 000006
  • KMC CONTENT MANAGEMENT 7.31 | SP021 | 000003
  • KMC CONTENT MANAGEMENT 7.31 | SP022 | 000003
  • KMC CONTENT MANAGEMENT 7.31 | SP023 | 000001
  • KMC CONTENT MANAGEMENT 7.31 | SP024 | 000000
  • KMC CONTENT MANAGEMENT 7.40 | SP015 | 000006
  • KMC CONTENT MANAGEMENT 7.40 | SP016 | 000003
  • KMC CONTENT MANAGEMENT 7.40 | SP017 | 000003
  • KMC CONTENT MANAGEMENT 7.40 | SP018 | 000001
  • KMC CONTENT MANAGEMENT 7.40 | SP019 | 000000
  • KMC CONTENT MANAGEMENT 7.50 | SP010 | 000002
  • KMC CONTENT MANAGEMENT 7.50 | SP011 | 000002
  • KMC CONTENT MANAGEMENT 7.50 | SP012 | 000002
  • KMC CONTENT MANAGEMENT 7.50 | SP013 | 000001
  • KMC CONTENT MANAGEMENT 7.50 | SP014 | 000000

Affected component

    EP-KM-TLS-XFB
    XF Builder

CVSS

Score: 0

Exploit

Exploit is not available.
For detailed information please contact the mail [email protected]

URL

https://launchpad.support.sap.com/#/notes/2661740

TAGS

#&65279-XXE
#XML-input-parsing
#&160–XMLForms
#XMLFormsBuilder
#&160-CVE-2018-2477