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Cisco Unified Communications Products Arbitrary File  Write Vulnerability

<p>A vulnerability in the software upgrade process of Cisco&nbsp;Unified Communications Manager (Unified CM) and Cisco&nbsp;Unified Communications Manager Session Management Edition (Unified CM SME)&nbsp;could allow an authenticated, remote attacker to write arbitrary files on the affected system.</p>
<p>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 <em>root</em>-level privileges.</p>
<p>Cisco&nbsp;has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.</p>
<p>This advisory is available at the following link:<br><a href="https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cucm-arb-write-74QzruUU" target="_blank">https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cucm-arb-write-74QzruUU</a></p>

     
         
Security Impact Rating:  Medium
   
   
       
CVE: CVE-2022-20789
Source: Cisco Unified Communications Products Arbitrary File  Write Vulnerability (https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cucm-arb-write-74QzruUU?vs_f=Cisco%20Security%20Advisory&vs_cat=Security%20Intelligence&vs_type=RSS&vs_p=Cisco%20Unified%20Communications%20Products%20Arbitrary%20File%20%20Write%20Vulnerability&vs_k=1)