Cisco Releases Security Patches for New Vulnerabilities Impacting Multiple Products

Cisco on Wednesday rolled out patches to address three security flaws^[1]
affecting its products, including a high-severity weakness
disclosed in NVIDIA Data Plane Development Kit (MLNX_DPDK) late
last month.

Tracked as CVE-2022-28199^[2]
(CVSS score: 8.6), the vulnerability stems from a lack of proper
error handling in DPDK’s network stack, enabling a remote adversary
to trigger a denial-of-service (DoS) condition and cause an impact
on data integrity and confidentiality.

“If an error condition is observed on the device interface, the
device may either reload or fail to receive traffic, resulting in a
denial-of-service (DoS) condition,” Cisco said^[3]
in a notice published on September 7.

DPDK^[4]
refers to a set of libraries and optimized network interface card
(NIC) drivers for fast packet processing, offering a framework and
common API for high-speed networking applications.

Cisco said it investigated its product lineup and determined the
following services to be affected by the bug, prompting the
networking equipment maker to release software updates –

• Cisco Catalyst 8000V Edge Software
• Adaptive Security Virtual Appliance (ASAv), and
• Secure Firewall Threat Defense Virtual (formerly FTDv)

Aside from CVE-2022-28199, Cisco has also resolved a
vulnerability in its Cisco SD-WAN vManage Software that could
“allow an unauthenticated, adjacent attacker who has access to the
VPN0 logical network to also access the messaging service ports on
an affected system.”

The company blamed the shortcoming – assigned the identifier
CVE-2022-20696^[5]
(CVSS score: 7.5) – on the absence of “sufficient protection
mechanisms” in the messaging server container ports. It credited
Orange Business for reporting the vulnerability.

Successful exploitation of the flaw could permit the attacker to
view and inject messages into the messaging service, which can
cause configuration changes or cause the system to reload, Cisco
said.

A third flaw remediated by Cisco is a vulnerability in the
messaging interface of Cisco Webex App (CVE-2022-20863^[6], CVSS score: 4.3), which
could enable an unauthenticated, remote attacker to modify links or
other content and conduct phishing attacks.

“This vulnerability exists because the affected software does
not properly handle character rendering,” it said. “An attacker
could exploit this vulnerability by sending messages within the
application interface.”

Cisco credited Rex, Bruce, and Zachery from Binance Red Team for
discovering and reporting the vulnerability.

Lastly, it also disclosed details of an authentication bypass
bug (CVE-2022-20923^[7], CVSS score: 4.0)
affecting Cisco Small Business RV110W, RV130, RV130W, and RV215W
Routers, which it said will not be fixed owing to the products
reaching end-of-life (EOL).

“Cisco has not released and will not release software updates to
address the vulnerability,” it said, encouraging users to “migrate
to Cisco Small Business RV132W, RV160, or RV160W Routers.”