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Vulnerability CVE-2021-25664
Published: 2021-04-22 Modified: 2021-04-23
| Description: |
A vulnerability has been identified in Nucleus 4 (All versions < V4.1.0), Nucleus NET (All versions), Nucleus ReadyStart (All versions), Nucleus Source Code (versions including affected IPv6 stack), VSTAR (versions including affected IPv6 stack). 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, allowing attackers to put the function into an infinite loop by supplying arbitrary length values. |
Type:
CWE-835 (Loop with Unreachable Exit Condition ('Infinite Loop'))
CVSS2 => (AV:N/AC:L/Au:N/C:N/I:N/A:P)
| CVSS Base Score |
Impact Subscore |
Exploitability Subscore |
5/10 |
2.9/10 |
10/10 |
| Exploit range |
Attack complexity |
Authentication |
Remote |
Low |
No required |
| Confidentiality impact |
Integrity impact |
Availability impact |
None |
None |
Partial |
References: |
https://cert-portal.siemens.com/productcert/pdf/ssa-248289.pdf
https://us-cert.cisa.gov/ics/advisories/icsa-21-103-05
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