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AUSCERT External Security Bulletin Redistribution
ESB-2021.2963
Cisco Nexus Insights Authenticated Information Disclosure Vulnerability
2 September 2021
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AusCERT Security Bulletin Summary
---------------------------------
Product: Nexus Insights
Publisher: Cisco Systems
Operating System: Cisco
Impact/Access: Access Confidential Data -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2021-34765
Original Bulletin:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-insight-infodis-2By2ZpBB
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Cisco Nexus Insights Authenticated Information Disclosure Vulnerability
Priority: Medium
Advisory ID: cisco-sa-insight-infodis-2By2ZpBB
First Published: 2021 September 1 16:00 GMT
Version 1.0: Final
Workarounds: No workarounds available
Cisco Bug IDs: CSCvz07748
CVE Names: CVE-2021-34765
CWEs: CWE-552
Summary
o A vulnerability in the web UI for Cisco Nexus Insights could allow an
authenticated, remote attacker to view and download files related to the
web application. The attacker requires valid device credentials.
This vulnerability exists because proper role-based access control (RBAC)
filters are not applied to file download actions. An attacker could exploit
this vulnerability by logging in to the application and then navigating to
the directory listing and download functions. A successful exploit could
allow the attacker to download sensitive files that should be restricted,
which could result in disclosure of sensitive information.
Cisco has released software updates that address this vulnerability. There
are no workarounds that address this vulnerability.
This advisory is available at the following link:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-insight-infodis-2By2ZpBB
Affected Products
o Vulnerable Products
At the time of publication, this vulnerability affected Cisco Nexus
Insights releases earlier than Release 6.0.1.
Note: Although the default configuration is vulnerable, the attacker must
have valid credentials to exploit this vulnerability.
See the Details section in the bug ID(s) at the top of this advisory for
the most complete and current information.
Products Confirmed Not Vulnerable
Only products listed in the Vulnerable Products section of this advisory
are known to be affected by this vulnerability.
Workarounds
o There are no workarounds that address this vulnerability.
Fixed Software
o When considering software upgrades , customers are advised to regularly
consult the advisories for Cisco products, which are available from the
Cisco Security Advisories page , to determine exposure and a complete
upgrade solution.
In all cases, customers should ensure that the devices to be upgraded
contain sufficient memory and confirm that current hardware and software
configurations will continue to be supported properly by the new release.
If the information is not clear, customers are advised to contact the Cisco
Technical Assistance Center (TAC) or their contracted maintenance
providers.
Fixed Releases
At the time of publication, Cisco Nexus Insights releases 6.0.1 and later
contained the fix for this vulnerability.
See the Details section in the bug ID(s) at the top of this advisory for
the most complete and current information.
Exploitation and Public Announcements
o The Cisco Product Security Incident Response Team (PSIRT) is not aware of
any public announcements or malicious use of the vulnerability that is
described in this advisory.
Source
o This vulnerability was found during internal security testing.
Cisco Security Vulnerability Policy
o To learn about Cisco security vulnerability disclosure policies and
publications, see the Security Vulnerability Policy . This document also
contains instructions for obtaining fixed software and receiving security
vulnerability information from Cisco.
URL
o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-insight-infodis-2By2ZpBB
Revision History
o +----------+---------------------------+----------+--------+--------------+
| Version | Description | Section | Status | Date |
+----------+---------------------------+----------+--------+--------------+
| 1.0 | Initial public release. | - | Final | 2021-SEP-01 |
+----------+---------------------------+----------+--------+--------------+
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