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AUSCERT External Security Bulletin Redistribution
ESB-2020.2121
Cisco Enterprise NFV Infrastructure Software Path Traversal Vulnerability
18 June 2020
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AusCERT Security Bulletin Summary
---------------------------------
Product: Cisco Enterprise NFVIS
Publisher: Cisco Systems
Operating System: Cisco
Impact/Access: Root Compromise -- Existing Account
Overwrite Arbitrary Files -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2020-3236
Original Bulletin:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nfvis-ptrav-SHMzzwVR
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Cisco Enterprise NFV Infrastructure Software Path Traversal Vulnerability
Priority: Medium
Advisory ID: cisco-sa-nfvis-ptrav-SHMzzwVR
First Published: 2020 June 17 16:00 GMT
Version 1.0: Final
Workarounds: No workarounds availableCisco Bug IDs: CSCvs50174
CVE-2020-3236
CWE-22
CVSS Score:
6.7 AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:X/RL:X/RC:X
Summary
o A vulnerability in the CLI of Cisco Enterprise NFV Infrastructure Software
(NFVIS) could allow an authenticated, local attacker to gain root shell
access to the underlying operating system and overwrite or read arbitrary
files. The attacker would need valid administrative credentials.
This vulnerability is due to improper input validation of CLI command
arguments. An attacker could exploit this vulnerability by using path
traversal techniques when executing a vulnerable command. A successful
exploit could allow the attacker to gain root shell access to the
underlying operating system and overwrite or read arbitrary files on an
affected device.
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-nfvis-ptrav-SHMzzwVR
Affected Products
o Vulnerable Products
At the time of publication, this vulnerability affected Cisco Enterprise
NFVIS releases earlier than Release 4.1.1.
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 and Alerts 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 NFVIS releases 4.1.1 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-nfvis-ptrav-SHMzzwVR
Revision History
o +----------+---------------------------+----------+--------+--------------+
| Version | Description | Section | Status | Date |
+----------+---------------------------+----------+--------+--------------+
| 1.0 | Initial public release. | - | Final | 2020-JUN-17 |
+----------+---------------------------+----------+--------+--------------+
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