CVE-2021-22704 Path traversal in Harmony/HMI Products Configured by Vijeo Designer (all versions prior to V6.2 SP11 ), Vijeo Designer Basic (all versions prior to V1.2), or EcoStruxure Machine Expert (all versions prior to V2.0)
Attackers can exploit path traversal via FTP to cause denial of service or access unauthorized system information on Schneider Electric HMI products.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-22704?
CVE-2021-22704 is a critical path traversal vulnerability in Harmony/HMI Products Configured by Vijeo Designer (all versions prior to V6.2 SP11 ), Vijeo Designer Basic (all versions prior to V1.2), or EcoStruxure Machine Expert (all versions prior to V2.0), published on 2 Sep 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A CWE-22: Improper Limitation of a Pathname to a Restricted Directory vulnerability exists in Harmony/HMI Products Configured by Vijeo Designer (all versions prior to V6.2 SP11 ), Vijeo Designer Basic (all versions prior to V1.2), or EcoStruxure Machine Expert (all versions prior to V2.0) that could cause a Denial of Service or unauthorized access to system information when connecting to the Harmony HMI over FTP.
Weakness: CWE-22
Which versions are affected by CVE-2021-22704?
It affects 2 products.
Products include Schneider-Electric Ecostruxure Machine Expert, Schneider-Electric Vijeo Designer.
How do I fix CVE-2021-22704?
No fix has been published for CVE-2021-22704 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2021-22704 being exploited?
There is no known exploitation of CVE-2021-22704 in the wild and no public exploit code.
Other vulnerabilities in Harmony/HMI Products Configured by Vijeo Designer (all versions prior to V6.2 SP11 ), Vijeo Designer Basic (all versions prior to V1.2), or EcoStruxure Machine Expert (all versions prior to V2.0)
- CVE-2020-7487 Code injection in EcoStruxure Machine Expert (all versions)SoMachine, SoMachine Motion (all versions)Modicon M218 Logic Controller (all versions)Modicon M241 Logic Controller (all versions)Modicon M251 Logic Controller (all versions)Modicon M258 Logic Controller (all versions)
- CVE-2020-7489 Code injection in SoMachine Basic (all versions)EcoStruxure Machine Expert – Basic (all versions)Modicon M100 Logic Controller (all versions)Modicon M200 Logic Controller (all versions)Modicon M221 Logic Controller (all versions)
- CVE-2021-22705 Memory corruption in Harmony HMI Products Configured by Vijeo Designer (all versions prior to V6.2 SP11 ) or EcoStruxure Machine Expert (all versions prior to V2.0)
- CVE-2020-7488 Information disclosure in EcoStruxure Machine Expert (all versions)SoMachine, SoMachine Motion (all versions)Modicon M218 Logic Controller (all versions)Modicon M241 Logic Controller (all versions)Modicon M251 Logic Controller (all versions)Modicon M258 Logic Controller (all versions)
Sources
Also known as GHSA-gw58-6f33-3447.