Siemens Nucleus IPv6 Header infinite loop

CVSS Meta Temp Score
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CTI Interest Score
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6.4$0-$5k0.00

Summaryinfo

A vulnerability was found in Siemens Nucleus, Nucleus NET, Nucleus ReadyStart, Nucleus Source Code and VSTAR. It has been declared as problematic. Affected is an unknown function of the component IPv6 Header Handler. Executing a manipulation can lead to infinite loop. This vulnerability appears as CVE-2021-25663. The attack may be performed from remote. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Siemens Nucleus, Nucleus NET, Nucleus ReadyStart, Nucleus Source Code and VSTAR. It has been declared as problematic. This vulnerability affects some unknown processing of the component IPv6 Header Handler. The manipulation with an unknown input leads to a infinite loop vulnerability. The CWE definition for the vulnerability is CWE-835. The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop. As an impact it is known to affect availability.

The weakness was presented 04/23/2021 as ssa-248289. The advisory is shared for download at cert-portal.siemens.com. This vulnerability was named CVE-2021-25663. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1499.

Upgrading eliminates this vulnerability.

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Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔍
CNA CVSS-BT Score: 🔍
CNA Vector: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.4

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CNA Base Score: 7.5
CNA Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Infinite loop
CWE: CWE-835 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/21/2021 🔍
04/23/2021 +91 days 🔍
04/23/2021 +0 days 🔍
03/11/2025 +1418 days 🔍

Sourcesinfo

Vendor: siemens.com

Advisory: ssa-248289
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2021-25663 (🔍)
GCVE (CVE): GCVE-0-2021-25663
GCVE (VulDB): GCVE-100-173788

Entryinfo

Created: 04/23/2021 08:39
Updated: 03/11/2025 13:01
Changes: 04/23/2021 08:39 (37), 04/27/2021 14:38 (6), 03/11/2025 13:01 (55)
Complete: 🔍
Cache ID: 216::103

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