Vulnerability identifier: #VU52217
Vulnerability risk: Medium
CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-835
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
Nucleus NET
Server applications /
Other server solutions
Nucleus ReadyStart
Server applications /
Other server solutions
Nucleus Source Code
Server applications /
Other server solutions
VSTAR
Server applications /
Other server solutions
Nucleus 4
Server applications /
Other server solutions
Vendor: Siemens
Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to the function that processes the hop-by-hop extension header in IPv6 packets and its options lacks any checks against the length field of the header. A remote attacker can consume all available system resources and cause denial of service conditions.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
Nucleus NET: All versions
Nucleus ReadyStart: All versions
Nucleus Source Code: All versions
VSTAR: All versions
External links
http://ics-cert.us-cert.gov/advisories/icsa-21-103-05
http://cert-portal.siemens.com/productcert/pdf/ssa-248289.pdf
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.