High severity · published Jan 28, 2017
CVE-2016-9553
The Sophos Web Appliance (version 4.2.1.3) is vulnerable to two Remote Command Injection vulnerabilities affecting its web administrative interface
7.2
CVSS
19.8%
EPSS
No
On KEV
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 vector
CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)19.8% · higher than 97% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
WA
Web Appliance · Sophos
4.2.1.3 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2016-9553
CVE.org
https://www.cve.org/CVERecord?id=CVE-2016-9553
Exploit
http://pastebin.com/DUYuN0U5
Release Notes
http://swa.sophos.com/rn/swa/concepts/ReleaseNotes_4.3.1.html
Third Party Advisory
http://www.securityfocus.com/bid/95853
Release Notes
https://community.sophos.com/products/web-appliance/b/blog/posts/release-of-swa-version-4-3-1
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