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CiscoCVE-2022-20789

HistoryApr 21, 2022 - 7:15 p.m.

CVE-2022-20789

2022-04-2119:15:08

CWE-610

CWE-73

cisco

web.nvd.nist.gov

cisco

unified communications manager

cve-2022-20789

vulnerability

software upgrade

remote attacker

arbitrary files

system script

root-level privileges

CVSS2

8.5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

NONE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:L/Au:S/C:N/I:C/A:C

CVSS3

6.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H

EPSS

0.001

Percentile

45.5%

JSON

A vulnerability in the software upgrade process of Cisco Unified Communications Manager (Unified CM) and Cisco Unified Communications Manager Session Management Edition (Unified CM SME) could allow an authenticated, remote attacker to write arbitrary files on the affected system. This vulnerability is due to improper restrictions applied to a system script. An attacker could exploit this vulnerability by using crafted variables during the execution of a system upgrade. A successful exploit could allow the attacker to overwrite or append arbitrary data to system files using root-level privileges.

Affected configurations

Nvd

Node

ciscounified_communications_managerMatch12.5\(1\)-

ciscounified_communications_managerMatch12.5\(1\)session_management

ciscounified_communications_managerMatch14.0-

ciscounified_communications_managerMatch14.0session_management

VendorProductVersionCPE
ciscounified_communications_manager12.5(1)cpe:2.3:a:cisco:unified_communications_manager:12.5\(1\):*:*:*:-:*:*:*
ciscounified_communications_manager12.5(1)cpe:2.3:a:cisco:unified_communications_manager:12.5\(1\):*:*:*:session_management:*:*:*
ciscounified_communications_manager14.0cpe:2.3:a:cisco:unified_communications_manager:14.0:*:*:*:-:*:*:*
ciscounified_communications_manager14.0cpe:2.3:a:cisco:unified_communications_manager:14.0:*:*:*:session_management:*:*:*

Vendor	Product	Version	CPE
cisco	unified_communications_manager	12.5(1)	cpe:2.3:a:cisco:unified_communications_manager:12.5\(1\)::::-:::
cisco	unified_communications_manager	12.5(1)	cpe:2.3:a:cisco:unified_communications_manager:12.5\(1\)::::session_management:::
cisco	unified_communications_manager	14.0	cpe:2.3:a:cisco:unified_communications_manager:14.0::::-:::
cisco	unified_communications_manager	14.0	cpe:2.3:a:cisco:unified_communications_manager:14.0::::session_management:::

CNA Affected

[
  {
    "product": "Cisco Unified Communications Manager",
    "vendor": "Cisco",
    "versions": [
      {
        "status": "affected",
        "version": "n/a"
      }
    ]
  }
]

References

tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cucm-arb-write-74QzruUU

CVSS2

8.5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

NONE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:L/Au:S/C:N/I:C/A:C

CVSS3

6.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H

EPSS

0.001

Percentile

45.5%

JSON

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