CVE-2016-9553 — HIGH (7.2) — White Hats Nepal

Vulnerability 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.

CVSS Score

7.2

HIGH

CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Sophos	Web Appliance	4.2.1.3

Related Weaknesses (CWE)

CWE-77

References

http://pastebin.com/DUYuN0U5Exploit
http://swa.sophos.com/rn/swa/concepts/ReleaseNotes_4.3.1.htmlRelease Notes
http://www.securityfocus.com/bid/95853Third Party AdvisoryVDB Entry
https://community.sophos.com/products/web-appliance/b/blog/posts/release-of-swa-Release Notes
http://pastebin.com/DUYuN0U5Exploit
http://swa.sophos.com/rn/swa/concepts/ReleaseNotes_4.3.1.htmlRelease Notes
http://www.securityfocus.com/bid/95853Third Party AdvisoryVDB Entry
https://community.sophos.com/products/web-appliance/b/blog/posts/release-of-swa-Release Notes

FAQ

What is CVE-2016-9553?

CVE-2016-9553 is a vulnerability with a CVSS score of 7.2 (HIGH). 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 (/...

How severe is CVE-2016-9553?

CVE-2016-9553 has been rated HIGH with a CVSS base score of 7.2/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2016-9553?

Check the references section above for vendor advisories and patch information. Affected products include: Sophos Web Appliance.