7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
9 High
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:L/Au:S/C:C/I:C/A:C
Cisco this week shipped patches to address a new round of critical security vulnerabilities affecting Expressway Series and Cisco TelePresence Video Communication Server (VCS) that could be exploited by an attacker to gain elevated privileges and execute arbitrary code.
The two flaws – tracked as CVE-2022-20754 and CVE-2022-20755 (CVSS scores: 9.0) – relate to an arbitrary file write and a command injection flaw in the API and web-based management interfaces of the two products that could have serious impacts on affected systems.
The company said both the issues stem from insufficient input validation of user-supplied command arguments, a weakness that could be weaponized by an authenticated, remote attacker to carry out directory traversal attacks, overwrite arbitrary files, and run malicious code on the underlying operating system as the root user.
“These vulnerabilities were found during internal security testing by Jason Crowder of the Cisco Advanced Security Initiatives Group (ASIG),” the company noted in its advisory published Wednesday.
Also addressed by Cisco are three other flaws in StarOS, Cisco Identity Services Engine RADIUS Service, and Cisco Ultra Cloud Core - Subscriber Microservices Infrastructure software –
Cisco also noted that it found no evidence of malicious exploitation of the vulnerabilities, adding they were either found during internal security testing or during the resolution of a Cisco Technical Assistance Center (TAC) support case.
But nevertheless, customers are urged to update to the latest versions as soon as possible to mitigate any potential in-the-wild attacks.
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7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
9 High
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:L/Au:S/C:C/I:C/A:C