Vulnerability identifier: #VU52207
Vulnerability risk: Medium
CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-330
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
Nucleus NET
Server applications /
Other server solutions
Nucleus RTOS
Server applications /
Other server solutions
Nucleus Source Code
Server applications /
Other server solutions
VSTAR
Server applications /
Other server solutions
Nucleus ReadyStart
Server applications /
Other server solutions
Vendor: Siemens
Description
The vulnerability allows a remote attacker to compromise the target system.
The vulnerability exists due to the DNS client does not properly randomize UDP port numbers of DNS requests. A remote attacker can poison the DNS cache or spoof DNS resolving.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
Nucleus NET: All versions
Nucleus RTOS: All versions
Nucleus Source Code: All versions
VSTAR: All versions
External links
http://ics-cert.us-cert.gov/advisories/icsa-21-103-14
http://cert-portal.siemens.com/productcert/txt/ssa-201384.txt
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.