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CVE-2020-27736
Detail
Modified
This vulnerability has been modified since it was last analyzed by the NVD. It is awaiting reanalysis which may result in further changes to the information provided.
Current Description
A vulnerability has been identified in APOGEE PXC Compact (BACnet) (All versions < V3.5.5), APOGEE PXC Compact (P2 Ethernet) (All versions < V2.8.20), APOGEE PXC Modular (BACnet) (All versions < V3.5.5), APOGEE PXC Modular (P2 Ethernet) (All versions < V2.8.20), Nucleus NET (All versions), Nucleus ReadyStart V3 (All versions < V2017.02.3), Nucleus ReadyStart V4 (All versions < V4.1.0), Nucleus Source Code (Versions including affected DNS modules), SIMOTICS CONNECT 400 (All versions < V0.5.0.0), TALON TC Compact (BACnet) (All versions < V3.5.5), TALON TC Modular (BACnet) (All versions < V3.5.5). The DNS domain name label parsing functionality does not properly validate the null-terminated name in DNS-responses. The parsing of malformed responses could result in a read past the end of an allocated structure. An attacker with a privileged position in the network could leverage this vulnerability to cause a denial-of-service condition or leak the read memory.
A vulnerability has been identified in Nucleus NET (All versions), Nucleus ReadyStart V3 (All versions < V2017.02.3), Nucleus ReadyStart V4 (All versions < V4.1.0), Nucleus Source Code (Versions including affected DNS modules), SIMOTICS CONNECT 400 (All versions < V0.5.0.0). The DNS domain name label parsing functionality does not properly validate the null-terminated name in DNS-responses. The parsing of malformed responses could result in a read past the end of an allocated structure. An attacker with a privileged position in the network could leverage this vulnerability to cause a denial-of-service condition or leak the read memory.
Metrics
NVD enrichment efforts reference publicly available information to associate
vector strings. CVSS information contributed by other sources is also
displayed.
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A vulnerability has been identified in Nucleus NET (All versions), Nucleus ReadyStart V3 (All versions < V2017.02.3), Nucleus ReadyStart V4 (All versions < V4.1.0), Nucleus Source Code (Versions including affected DNS modules), SIMOTICS CONNECT 400 (All versions < V0.5.0.0). The DNS domain name label parsing functionality does not properly validate the null-terminated name in DNS-responses. The parsing of malformed responses could result in a read past the end of an allocated structure. An attac
OR
*cpe:2.3:a:siemens:capital_vstar:-:*:*:*:*:*:*:*
*cpe:2.3:a:siemens:nucleus_4:*:*:*:*:*:*:*:* versions up to (excluding) 4.1.0
*cpe:2.3:a:siemens:nucleus_net:*:*:*:*:*:*:*:*
*cpe:2.3:a:siemens:nucleus_readystart:*:*:*:*:*:*:*:* versions up to (excluding) 4.1.0
*cpe:2.3:a:siemens:nucleus_source_code:-:*:*:*:*:*:*:*
OR
*cpe:2.3:a:siemens:nucleus_net:*:*:*:*:*:*:*:*
*cpe:2.3:a:siemens:nucleus_readystart_v3:*:*:*:*:*:*:*:* versions up to (excluding) 2017.02.3
*cpe:2.3:a:siemens:nucleus_readystart_v4:*:*:*:*:*:*:*:* versions up to (excluding) 4.1.0
*cpe:2.3:a:siemens:nucleus_source_code:-:*:*:*:*:*:*:*
A vulnerability has been identified in Capital VSTAR (Versions including affected DNS modules), Nucleus NET (All versions), Nucleus ReadyStart V3 (All versions < V2017.02.3), Nucleus ReadyStart V4 (All versions < V4.1.0), Nucleus Source Code (Versions including affected DNS modules), SIMOTICS CONNECT 400 (All versions < V0.5.0.0). The DNS domain name label parsing functionality does not properly validate the null-terminated name in DNS-responses. The parsing of malformed responses could result i
A vulnerability has been identified in Nucleus NET (All versions), Nucleus ReadyStart V3 (All versions < V2017.02.3), Nucleus ReadyStart V4 (All versions < V4.1.0), Nucleus Source Code (Versions including affected DNS modules), SIMOTICS CONNECT 400 (All versions < V0.5.0.0). The DNS domain name label parsing functionality does not properly validate the null-terminated name in DNS-responses. The parsing of malformed responses could result in a read past the end of an allocated structure. An attac
A vulnerability has been identified in Nucleus 4 (All versions < V4.1.0), Nucleus NET (All versions), Nucleus RTOS (versions including affected DNS modules), Nucleus ReadyStart (All versions < V2017.02.3), Nucleus Source Code (versions including affected DNS modules), SIMOTICS CONNECT 400 (All versions < V0.5.0.0), VSTAR (versions including affected DNS modules). The DNS domain name label parsing functionality does not properly validate the null-terminated name in DNS-responses. The parsing of m
A vulnerability has been identified in Capital VSTAR (Versions including affected DNS modules), Nucleus NET (All versions), Nucleus ReadyStart V3 (All versions < V2017.02.3), Nucleus ReadyStart V4 (All versions < V4.1.0), Nucleus Source Code (Versions including affected DNS modules), SIMOTICS CONNECT 400 (All versions < V0.5.0.0). The DNS domain name label parsing functionality does not properly validate the null-terminated name in DNS-responses. The parsing of malformed responses could result i
Modified Analysis by NIST11/12/2021 2:36:18 PM
Action
Type
Old Value
New Value
Changed
CPE Configuration
OR
*cpe:2.3:a:siemens:nucleus_4:*:*:*:*:*:*:*:* versions up to (excluding) 4.1.0
*cpe:2.3:a:siemens:nucleus_net:*:*:*:*:*:*:*:*
*cpe:2.3:a:siemens:nucleus_readystart:*:*:*:*:*:*:*:* versions up to (excluding) 2017.02.3
*cpe:2.3:a:siemens:nucleus_source_code:-:*:*:*:*:*:*:*
*cpe:2.3:a:siemens:vstar:-:*:*:*:*:*:*:*
*cpe:2.3:o:siemens:nucleus_rtos:-:*:*:*:*:*:*:*
OR
*cpe:2.3:a:siemens:capital_vstar:-:*:*:*:*:*:*:*
*cpe:2.3:a:siemens:nucleus_4:*:*:*:*:*:*:*:* versions up to (excluding) 4.1.0
*cpe:2.3:a:siemens:nucleus_net:*:*:*:*:*:*:*:*
*cpe:2.3:a:siemens:nucleus_readystart:*:*:*:*:*:*:*:* versions up to (excluding) 4.1.0
*cpe:2.3:a:siemens:nucleus_source_code:-:*:*:*:*:*:*:*
A vulnerability has been identified in Capital VSTAR (Versions including affected DNS modules), Nucleus NET (All versions), Nucleus ReadyStart V3 (All versions < V2017.02.3), Nucleus ReadyStart V4 (All versions < V4.1.0), Nucleus Source Code (Versions including affected DNS modules), SIMOTICS CONNECT 400 (All versions < V0.5.0.0). The DNS domain name label parsing functionality does not properly validate the null-terminated name in DNS-responses. The parsing of malformed responses could result i
A vulnerability has been identified in Nucleus 4 (All versions < V4.1.0), Nucleus NET (All versions), Nucleus RTOS (versions including affected DNS modules), Nucleus ReadyStart (All versions < V2017.02.3), Nucleus Source Code (versions including affected DNS modules), SIMOTICS CONNECT 400 (All versions < V0.5.0.0), VSTAR (versions including affected DNS modules). The DNS domain name label parsing functionality does not properly validate the null-terminated name in DNS-responses. The parsing of m
A vulnerability has been identified in Nucleus 4 (All versions < V4.1.0), Nucleus NET (All versions), Nucleus RTOS (versions including affected DNS modules), Nucleus ReadyStart (All versions < V2017.02.3), Nucleus Source Code (versions including affected DNS modules), SIMOTICS CONNECT 400 (All versions < V0.5.0.0), VSTAR (versions including affected DNS modules). The DNS domain name label parsing functionality does not properly validate the null-terminated name in DNS-responses. The parsing of m
A vulnerability has been identified in Capital VSTAR (Versions including affected DNS modules), Nucleus NET (All versions), Nucleus ReadyStart V3 (All versions < V2017.02.3), Nucleus ReadyStart V4 (All versions < V4.1.0), Nucleus Source Code (Versions including affected DNS modules), SIMOTICS CONNECT 400 (All versions < V0.5.0.0). The DNS domain name label parsing functionality does not properly validate the null-terminated name in DNS-responses. The parsing of malformed responses could result i
Initial Analysis by NIST4/30/2021 10:45:57 AM
Action
Type
Old Value
New Value
Added
CPE Configuration
AND
OR
*cpe:2.3:o:siemens:simotics_connect_400_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 0.5.0.0
OR
cpe:2.3:h:siemens:simotics_connect_400:-:*:*:*:*:*:*:*
Added
CPE Configuration
OR
*cpe:2.3:a:siemens:nucleus_4:*:*:*:*:*:*:*:* versions up to (excluding) 4.1.0
*cpe:2.3:a:siemens:nucleus_net:*:*:*:*:*:*:*:*
*cpe:2.3:a:siemens:nucleus_readystart:*:*:*:*:*:*:*:* versions up to (excluding) 2017.02.3
*cpe:2.3:a:siemens:nucleus_source_code:-:*:*:*:*:*:*:*
*cpe:2.3:a:siemens:vstar:-:*:*:*:*:*:*:*
*cpe:2.3:o:siemens:nucleus_rtos:-:*:*:*:*:*:*:*
Added
CVSS V2
NIST (AV:N/AC:M/Au:N/C:P/I:N/A:P)
Added
CVSS V3.1
NIST AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:H
Changed
Reference Type
https://cert-portal.siemens.com/productcert/pdf/ssa-669158.pdf No Types Assigned
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