Vulnerability CVE-2019-6820
Published: 2019-05-22

Description:
A CWE-306: Missing Authentication for Critical Function vulnerability exists which could cause a modification of device IP configuration (IP address, network mask and gateway IP address) when a specific Ethernet frame is received in all versions of: Modicon M100, Modicon M200, Modicon M221, ATV IMC drive controller, Modicon M241, Modicon M251, Modicon M258, Modicon LMC058, Modicon LMC078, PacDrive Eco ,PacDrive Pro, PacDrive Pro2

Type:

CWE-306

 (Missing Authentication for Critical Function)

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

CVSS Base Score
Impact Subscore
Exploitability Subscore
6.4/10
4.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
None
Partial
Partial
Affected software
Schneider-electric -> Atv imc drive controller firmware 
Schneider-electric -> Modicon lmc058 firmware 
Schneider-electric -> Modicon lmc078 firmware 
Schneider-electric -> Modicon m100 firmware 
Schneider-electric -> Modicon m200 firmware 
Schneider-electric -> Modicon m221 firmware 
Schneider-electric -> Modicon m241 firmware 
Schneider-electric -> Modicon m251 firmware 
Schneider-electric -> Modicon m258 firmware 
Schneider-electric -> Pacdrive eco firmware 
Schneider-electric -> Pacdrive pro2 firmware 
Schneider-electric -> Pacdrive pro firmware 

 References:
https://www.schneider-electric.com/en/download/document/SEVD-2019-134-02/
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