CVE-2019-9744 Auth bypass in n/a

High 8.8 Published Updated

Attackers can hijack sessions and access the web interface by sharing an IP address with an authenticated user on PHOENIX CONTACT devices.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
A user has to click or open something
Fix
None listed

What is CVE-2019-9744?

CVE-2019-9744 is a high-severity authentication bypass vulnerability in n/a, published on 26 Mar 2019. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

An issue was discovered on PHOENIX CONTACT FL NAT SMCS 8TX, FL NAT SMN 8TX, FL NAT SMN 8TX-M, and FL NAT SMN 8TX-M-DMG devices. There is unauthorized access to the WEB-UI by attackers arriving from the same source IP address as an authenticated user, because this IP address is used as a session identifier.

Weakness: CWE-384

Which versions are affected by CVE-2019-9744?

It affects 4 products.

Products include Phoenixcontact Fl Nat Smcs 8tx Firmware, Phoenixcontact Fl Nat Smn 8tx-M-Dmg Firmware, Phoenixcontact Fl Nat Smn 8tx-M Firmware, Phoenixcontact Fl Nat Smn 8tx Firmware.

How do I fix CVE-2019-9744?

No fix has been published for CVE-2019-9744 yet. Limit exposure of the affected software until one is available.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2019-9744 being exploited?

There is no known exploitation of CVE-2019-9744 in the wild and no public exploit code.

Sources

Also known as GHSA-p5mw-x2jr-q9g7.

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