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zdiSteven Seeley (mr_me) of Source InciteZDI-20-538
HistoryApr 16, 2020 - 12:00 a.m.

Cisco UCS Director downloadFile Directory Traversal Information Disclosure Vulnerability

2020-04-1600:00:00
Steven Seeley (mr_me) of Source Incite
www.zerodayinitiative.com
10

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

7.5 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

0.968 High

EPSS

Percentile

99.7%

This vulnerability allows remote attackers to disclose sensitive information on affected installations of Cisco UCS Director. Authentication is not required to exploit this vulnerability. The specific flaw exists within the processing of the userAPIDownloadFile API, which calls the downloadFile method. The issue results from the lack of proper validation of a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to disclose file contents in the context of root.

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

7.5 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

0.968 High

EPSS

Percentile

99.7%