Vulnerability CVE-2017-7575
Published: 2017-04-06

Description:
Schneider Electric Modicon TM221CE16R 1.3.3.3 devices allow remote attackers to discover the application-protection password via a \x00\x01\x00\x00\x00\x05\x01\x5a\x00\x03\x00 request to the Modbus port (502/tcp). Subsequently the application may be arbitrarily downloaded, modified, and uploaded.

CVSS2 => (AV:N/AC:L/Au:N/C:P/I:N/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
5/10
2.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
None
None
Affected software
Schneider-electric -> Modicon tm221ce16r firmware 

 References:
http://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2017-097-02
http://www.securityfocus.com/bid/97523
https://os-s.net/advisories/OSS-2017-01.pdf
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