Resource exhaustion in TELEM-GWM and TELEM-GW6 - CVE-2018-10607
Published: May 23, 2018
Vulnerability identifier: #VU12989
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2018-10607
CWE-ID: CWE-400
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause DoS condition on the target system.
The vulnerability exists due to resource exhaustion. A remote attacker can create new connections to one or more IOAs, without closing them properly and cause a denial of service within the industrial process control channel.
Affected software
TELEM-GWM
TELEM-GW6
Red Hat Enterprise Linux Server
Red Hat Enterprise Linux Workstation
Red Hat Enterprise Linux Desktop
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for Scientific Computing
Red Hat Enterprise Linux for Power
Opensuse
TELEM-GW6
Red Hat Enterprise Linux Server
Red Hat Enterprise Linux Workstation
Red Hat Enterprise Linux Desktop
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for Scientific Computing
Red Hat Enterprise Linux for Power
Opensuse
How to mitigate CVE-2018-10607
In most cases, the vulnerability can be resolved by proper configuration:
- Using "other side IP" field in RTU configuration for every TCP/IP channel. This will minimize the risk of allowing unauthorized access and control over the communication channels (i.e., only trusted partners are allowed);
- Using secure VPN channels;
- Proper packet filtering by enabling firewall in RTU configuration. Note that the "interface" field of every communication channel must be properly set in RTU configuration when firewall is enabled.