CVE-2021-31882
Medium
Description
A vulnerability has been identified in Capital Embedded AR Classic 431-422 (All versions), Capital Embedded AR Classic R20-11 (All versions < V2303). The DHCP client application does not validate the length of the Domain Name Server IP option(s) (0x06) when processing DHCP ACK packets. This may lead to Denial-of-Service conditions. (FSMD-2021-0011)
SeverityMedium
CVSS6.5
Exploit probability—
ProductSiemens Capital Vstar
PublishedNov 9, 2021
First seenNov 9, 2021
Weakness typeCWE-119Memory buffer bounds error
How to fix
Update
- siemens nucleus_readystart_v32017.02.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| siemens capital_vstar | No range specified | — |
| siemens nucleus_net | No range specified | — |
| siemens nucleus_readystart_v3 | v < 2017.02.1 | 2017.02.1 |
| siemens nucleus_source_code | No range specified | — |
| siemens apogee_modular_building_controller_firmware | No range specified | — |
| siemens apogee_modular_equiment_controller_firmware | No range specified | — |
| siemens apogee_pxc_compact_firmware | No range specified | — |
| siemens apogee_pxc_modular_firmware | No range specified | — |
| siemens talon_tc_compact_firmware | No range specified | — |
| siemens talon_tc_modular_firmware | No range specified | — |
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