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Rewterz Threat Advisory – Multiple Sophos Web Appliance Vulnerabilities Exploit in the Wild

Severity

High

Analysis Summary

CVE-2023-1671 CVSS:9.8

Sophos Web Appliance could allow a remote attacker to execute arbitrary code on the system, caused by a pre-auth command injection flaw in the warn-proceed handler. By sending a specially crafted request, an attacker could exploit this vulnerability to execute arbitrary code on the system.

CVE-2020-36692 CVSS:6.5

Sophos Web Appliance is vulnerable to cross-site scripting, caused by improper validation of user-supplied input by the report scheduler. A remote attacker could exploit this vulnerability using a specially crafted URL to execute script in a victim’s Web browser within the security context of the hosting Web site, once the URL is clicked. An attacker could use this vulnerability to steal the victim’s cookie-based authentication credentials.

CVE-2022-4934 CVSS:7.2

Sophos Web Appliance could allow a remote authenticated attacker to execute arbitrary code on the system, caused by a pre-auth command injection flaw in the exception wizard. By sending a specially crafted request, an attacker could exploit this vulnerability to execute arbitrary code on the system.

Impact

  • Code Execution
  • Cross-Site Scripting

Indicators Of Compromise

CVE

  • CVE-2023-1671
  • CVE-2020-36692
  • CVE-2022-4934

Affected Vendors

Sophos

Affected Products

  • Sophos Web Appliance 4.3.10

Remediation

Upgrade to the latest version of Sophos Web Appliance, available from the Sophos Website.

Sophos Website