CVE-2016-9553
7.2 · HIGHOverview
CVE-2016-9553 is a high-severity vulnerability affecting sophos web_appliance. It was published on January 28, 2017 and has a CVSS 3.0 base score of 7.2 (HIGH).
This vulnerability has a CVSS 3.0 base score of 7.2, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical Description
The Sophos Web Appliance (version 4.2.1.3) is vulnerable to two Remote Command Injection vulnerabilities affecting its web administrative interface. These vulnerabilities occur in the MgrReport.php (/controllers/MgrReport.php) component responsible for blocking and unblocking IP addresses from accessing the device. The device doesn't properly escape the information passed in the variables 'unblockip' and 'blockip' before calling the shell_exec() function which allows for system commands to be injected into the device. The code erroneously suggests that the information handled is protected by utilizing the variable name 'escapedips' - however this was not the case. The Sophos ID is NSWA-1258.
Remediation
Check the references section for vendor advisories and patches from sophos. Update web_appliance to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
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References
Frequently Asked Questions
What is CVE-2016-9553?
CVE-2016-9553 is a high-severity vulnerability affecting sophos web_appliance. It was published on January 28, 2017 and has a CVSS 3.0 base score of 7.2 (HIGH).
How severe is CVE-2016-9553?
This vulnerability has a CVSS 3.0 base score of 7.2, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2016-9553?
Check the references section for vendor advisories and patches from sophos. Update web_appliance to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2016-9553?
CyberStrike's AI-powered security agents can automatically detect CVE-2016-9553 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
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