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srcinciteSteven Seeley (mr_me) of Qihoo 360 Vulcan TeamSRC-2020-0028
HistoryAug 13, 2020 - 12:00 a.m.

SRC-2020-0028 : Microsoft SharePoint Server PasswordRecovery Information Disclosure Vulnerability

2020-08-1300:00:00
Steven Seeley (mr_me) of Qihoo 360 Vulcan Team
srcincite.io
18

5.3 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

6.8 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

COMPLETE

Integrity Impact

NONE

Availability Impact

NONE

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

0.006 Low

EPSS

Percentile

78.0%

Vulnerability Details:

This vulnerability allows remote attackers to disclose sensitive information on affected installations of SharePoint Server. Authentication is required to exploit this vulnerability.

The specific flaw exists within the PasswordRecovery class. The issue results from the lack of proper validation of user-supplied BodyFileName property. An attacker can leverage this vulnerability to disclose files in the context of the Administrator.

Affected Vendors:

Microsoft

Affected Products:

SharePoint Server

Vendor Response:

Microsoft has issued an update to correct this vulnerability. More details can be found at: <https://msrc.microsoft.com/update-guide/vulnerability/CVE-2020-17017&gt;

5.3 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

6.8 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

COMPLETE

Integrity Impact

NONE

Availability Impact

NONE

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

0.006 Low

EPSS

Percentile

78.0%