CVE-2020-35685

CVE-2020-35685 affects HCC Nichestack/NicheStack up to versions preceding 4.3, where ISNs are generated from an insufficiently random source. This enables an attacker to potentially hijack existing TCP connections or spoof future ones, as ISN predictability undermines TCP security. The ICS/CISA a...

CVE-2021-27565

The CVE-2021-27565 entry affects HCC Embedded’s InterNiche/NicheStack TCP/IP stack (and NicheLite) prior to version 4.3. The issue is an HTTP request handling bug in the stack that can trigger an infinite loop via a valid but unexpected request (e.g., OPTIONS), causing a denial of service by disr...

CVE-2021-31228

CVE-2021-31228 is a vulnerability in HCC Embedded’s InterNiche/NicheStack TCP/IP stack. The issue allows an attacker to predict the DNS query source port, enabling forged DNS responses to be accepted as valid by a DNS client (without needing to sniff the specific query). The Common details indica...

CVE-2020-35684

CVE-2020-35684 affects HCC Nichestack (InterNiche/NicheStack) TCP/IP stack. The issue is in the TCP checksum path where the code uses an unchecked IP payload size to compute the TCP payload length, which can cause an out-of-bounds read when the IP payload size is smaller than the IP header. This ...

CVE-2021-31227

CVE-2021-31227 affects HCC Embedded InterNiche/NicheStack. It is a heap-buffer-overflow in the HTTP POST parsing path (wbs_multidata) caused by an incorrect signed-integer comparison. Exploitation requires sending a malformed HTTP packet with a negative Content-Length, bypassing size checks and t...

CVE-2021-31400

CVE-2021-31400 affects HCC Embedded InterNiche/NicheStack TCP/IP stack (in tcp_pulloutofband() in tcp_in.c, 4.0.1) where out-of-band urgent data handling may call a panic, potentially causing an infinite loop and DoS. Public sources (NVD, Red Hat CVE page, CERT/ICS, ENISA ENISA, and ICSA Update B...

CVE-2021-31401

CVE-2021-31401 affects HCC Embedded’s InterNiche/NicheStack TCP/IP stack (InterNiche 4.0.1). The issue is an improper input validation in TCP/IP processing: the TCP/IP stack does not validate the IP total length, allowing a crafted IP packet to trigger an integer overflow in tcp_rcv() (nptcp.c). ...

CVE-2020-35683

CVE-2020-35683 affects HCC Embedded/InterNiche Nichestack/NicheLite prior to version 4.3. The root cause is an unchecked IP payload size used to compute the ICMP checksum, which can cause an out-of-bounds read and lead to Denial-of-Service. Red Hat notes the in_ipv4 module (v1.5) as impacted; CIS...

CVE-2021-36762

CVE-2021-36762 affects HCC Embedded InterNiche NicheStack and NicheLite up to version 4.3. The tfshnd():tftpsrv.c TFTP packet processing function may read beyond the protocol buffer when a filename isn’t properly NULL-terminated, enabling out-of-bounds reads and potential DoS. Impact is described...