CVE-2019-10121

eQ-3 HomeMatic CCU2 devices before 2.41.8 and CCU3 devices before 3.43.15 use session IDs for authentication but lack authorization checks

published July 10, 2019

CVSS
โ€”
EPSS
5%
Percentile
91.7
In the wild
Unconfirmed
What it is

โš ๏ธ A crafty session hijack is all it takes to waltz right into admin territory! An attacker can snag a session ID and log in as an admin without breaking a sweat. ๐Ÿ˜ฑ Think of it like a guest at a party who finds a forgotten keycard to the VIP lounge. Without anyone checking IDs, they can stroll in and start making changes! An attacker exploiting this flaw could gain full administrative access to the HomeMatic devices, potentially manipulating settings, controlling devices, or even shutting them down. This could lead to unauthorized control over your smart home, with consequences ranging from privacy invasions to compromised security. Yikes!

Put simply

Think of it like a guest at a party who finds a forgotten keycard to the VIP lounge. Without anyone checking IDs, they can stroll in and start making changes! This vulnerability arises because the HomeMatic CCU2 and CCU3 devices use session IDs for authentication but lack proper authorization checks. An attacker can easily obtain a session ID from the login dialogue, allowing them to gain administrative access without proper credentials.

What to do

An attacker exploiting this flaw could gain full administrative access to the HomeMatic devices, potentially manipulating settings, controlling devices, or even shutting them down. This could lead to unauthorized control over your smart home, with consequences ranging from privacy invasions to compromised security. Yikes! To mitigate this issue, users should upgrade to version 2.41.8 for CCU2 devices and version 3.43.15 for CCU3 devices as soon as possible. Regularly reviewing access logs and implementing additional security measures can also help protect your smart home setup. ๐Ÿ›ก๏ธ You've got this! Stay ahead of vulnerabilities and keep your home secure! ๐ŸŒŸ

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.04628 ยท 91.7th percentile
Published
2019-07-10T11:54Z
EPSS history
Timeline
  • 10 JUL 11:54Z
    eQ-3 HomeMatic CCU2 devices before 2.41.8 and CCU3 devices before 3.43.15 use session IDs for authentication but lack authorization checks
    cvelistv5