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CVE-2017-16691 SNOTE Digital signature verification along with note file extraction, SAP security note 2546220

Description

UPDATE 12th December 2017: This note has been re-released after adding the CVE information.

SAP Note Assistant tool supports upload of digitally signed note file of type ‘SAR’. The digital signature verification is done together with the extraction of note file contained in the SAR archive. It is possible to append a tampered file to the SAR archive using SAPCAR tool and during the extraction, digital signature verification fails but the tampered file is extracted.

CVSS Information

CVSS v3 Base Score: 5.3 / 10
CVSS v3 Base Vector:

AV : Attack Vector (Related exploit range)

Network (N)

AC : Attack Complexity (Required attack complexity)

High (H)

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

None (N)

UI : User Interaction (Required user participation)

Required (R)

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

Unchanged (U)

C : Impact to Confidentiality

None (N)

I : Impact to Integrity

High (H)

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

  • SAP_BASIS | 700 | 702
  • SAP_BASIS | 710 | 711
  • SAP_BASIS | 730 | 730
  • SAP_BASIS | 731 | 731
  • SAP_BASIS | 740 | 740
  • SAP_BASIS | 750 | 752
  • SAP_BASIS 700 | SAPKB70035 |
  • SAP_BASIS 701 | SAPKB70120 |
  • SAP_BASIS 702 | SAPKB70220 |
  • SAP_BASIS 730 | SAPKB73018 |
  • SAP_BASIS 710 | SAPKB71023 |
  • SAP_BASIS 752 | SAPK-75201INSAPBASIS |
  • SAP_BASIS 711 | SAPKB71118 |
  • SAP_BASIS 751 | SAPK-75105INSAPBASIS |
  • SAP_BASIS 731 | SAPKB73122 |
  • SAP_BASIS 740 | SAPKB74019 |
  • SAP_BASIS 750 | SAPK-75011INSAPBASIS |

Affected component

    BC-UPG-NA
    SAP Notes Assistant

CVSS

Score: 0

Exploit

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

URL

https://launchpad.support.sap.com/#/notes/2546220

TAGS

#Digitally-signed-SAP-Note
#&160-CVE-2017-16691