Vulnerability identifier: #VU25342

Vulnerability risk: Medium

CVSSv3.1: 6.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:H/E:U/RL:U/RC:C]

CVE-ID: CVE-2019-6833

CWE-ID: CWE-754

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Magelis HMIGTO
Hardware solutions / Other hardware appliances
Magelis HMISTO
Hardware solutions / Other hardware appliances
Magelis XBTGH
Hardware solutions / Other hardware appliances
Magelis HMIGTU
Hardware solutions / Other hardware appliances
Magelis HMIGTUX
Hardware solutions / Other hardware appliances
Magelis HMISCU
Hardware solutions / Other hardware appliances
Magelis HMISTU
Hardware solutions / Other hardware appliances
Magelis XBTGT
Hardware solutions / Other hardware appliances
Magelis XBTGC
Hardware solutions / Other hardware appliances
Magelis HMIGXO
Hardware solutions / Other hardware appliances
Magelis HMIGXU
Hardware solutions / Other hardware appliances

Vendor: Schneider Electric

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to the HMI may temporarily freeze when the device receives a high rate of frames. When the attack stops, the buffered commands are processed by the HMI. A remote attacker can cause a denial of service condition on the target system.

Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

Magelis HMIGTO: All versions

Magelis HMISTO: All versions

Magelis XBTGH: All versions

Magelis HMIGTU: All versions

Magelis HMIGTUX: All versions

Magelis HMISCU: All versions

Magelis HMISTU: All versions

Magelis XBTGT: All versions

Magelis XBTGC: All versions

Magelis HMIGXO: All versions

Magelis HMIGXU: All versions

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CPE

• cpe:2.3:h:schneider_electric:magelis_hmigto:*:*:*:*:*:*:*:*
• cpe:2.3:h:schneider_electric:magelis_hmisto:*:*:*:*:*:*:*:*
• cpe:2.3:h:schneider_electric:magelis_xbtgh:*:*:*:*:*:*:*:*
• cpe:2.3:h:schneider_electric:magelis_hmigtu:*:*:*:*:*:*:*:*
• cpe:2.3:h:schneider_electric:magelis_hmigtux:*:*:*:*:*:*:*:*
• cpe:2.3:h:schneider_electric:magelis_hmiscu:*:*:*:*:*:*:*:*
• cpe:2.3:h:schneider_electric:magelis_hmistu:*:*:*:*:*:*:*:*
• cpe:2.3:h:schneider_electric:magelis_xbtgt:*:*:*:*:*:*:*:*
• cpe:2.3:h:schneider_electric:magelis_xbtgc:*:*:*:*:*:*:*:*
• cpe:2.3:h:schneider_electric:magelis_hmigxo:*:*:*:*:*:*:*:*
• cpe:2.3:h:schneider_electric:magelis_hmigxu:*:*:*:*:*:*:*:*

External links
http://security.cse.iitk.ac.in/responsible-disclosure
http://www.schneider-electric.com/ww/en/download/document/SEVD-2019-225-01

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.