Vulnerability Name:

CVE-2022-20812 (CCN-230540)

Assigned:2021-11-02
Published:2022-07-06
Updated:2022-11-10
Summary:Multiple vulnerabilities in the API and in the web-based management interface of Cisco Expressway Series and Cisco TelePresence Video Communication Server (VCS) could allow a remote attacker to overwrite arbitrary files or conduct null byte poisoning attacks on an affected device.
Note: Cisco Expressway Series refers to the Expressway Control (Expressway-C) device and the Expressway Edge (Expressway-E) device. For more information about these vulnerabilities, see the Details section of this advisory.
CVSS v3 Severity:6.5 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H)
5.7 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): High
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): High
Availibility (A): High
9.0 Critical (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:L)
7.8 High (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:L/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): High
User Interaction (UI): None
Scope:Scope (S): Changed
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): Low
CVSS v2 Severity:8.5 High (CVSS v2 Vector: AV:N/AC:L/Au:S/C:N/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): None
Integrity (I): Complete
Availibility (A): Complete
8.7 High (CCN CVSS v2 Vector: AV:N/AC:L/Au:S/C:C/I:C/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Partial
Vulnerability Type:CWE-22
Vulnerability Consequences:Obtain Information
References:Source: MITRE
Type: CNA
CVE-2022-20812

Source: XF
Type: UNKNOWN
cisco-cve202220812-dir-trav(230540)

Source: CISCO
Type: Vendor Advisory
20221005 Cisco Expressway Series and Cisco TelePresence Video Communication Server Vulnerabilities

Source: CCN
Type: Cisco Security Advisory cisco-sa-expressway-overwrite-3buqW8LH
Cisco Expressway Series and Cisco TelePresence Video Communication Server Vulnerabilities

Source: CISCO
Type: Vendor Advisory
20220706 Cisco Expressway Series and Cisco TelePresence Video Communication Server Vulnerabilities

Vulnerable Configuration:Configuration 1:
  • cpe:/a:cisco:telepresence_video_communication_server:*:*:*:*:*:*:*:* (Version < x14.0.7)
  • OR cpe:/a:cisco:expressway:*:*:*:*:*:*:*:* (Version < x14.0.7)

    • * Denotes that component is vulnerable
    BACK
    cisco telepresence video communication server *
    cisco expressway *