CVE-2021-27565: Loop with Unreachable Exit Condition

The web server in InterNiche NicheStack through 4.0.1 allows remote attackers to cause a denial of service infinite loop and networking outage via an unexpected valid HTTP request such as OPTIONS. This occurs because the HTTP request handler enters a miscoded wbsloop debugger hook...

CVE-2021-31400: Loop with Unreachable Exit Condition

An issue was discovered in tcppulloutofband in tcpin.c in HCC embedded InterNiche 4.0.1. The TCP out-of-band urgent-data processing function invokes a panic function if the pointer to the end of the out-of-band data points outside of the TCP segment's data. If the panic function hadn't a trap...

CVE-2021-31228: Use of Insufficiently Random Values

An issue was discovered in HCC embedded InterNiche 4.0.1. This vulnerability allows the attacker to predict a DNS query's source port in order to send forged DNS response packets that will be accepted as valid answers to the DNS client's requests without sniffing the specific request. Data is...

CVE-2021-31227: Out-of-bounds Write

An issue was discovered in HCC embedded InterNiche 4.0.1. A potential heap buffer overflow exists in the code that parses the HTTP POST request, due to an incorrect signed integer comparison. This vulnerability requires the attacker to send a malformed HTTP packet with a negative Content-Length,...

CVE-2021-31226: Out-of-bounds Write

An issue was discovered in HCC embedded InterNiche 4.0.1. A potential heap buffer overflow exists in the code that parses the HTTP POST request, due to lack of size validation. This vulnerability requires the attacker to send a crafted HTTP POST request with a URI longer than 50 bytes. This leads...

CVE-2021-36762: Undefined Security Weakness

An issue was discovered in HCC Embedded InterNiche NicheStack through 4.3. The tfshnd:tftpsrv.c TFTP packet processing function doesn't ensure that a filename is adequately '\0' terminated; therefore, a subsequent call to strlen for the filename might read out of bounds of the protocol packet...

CVE-2020-25928

The DNS feature in InterNiche NicheStack TCP/IP 4.0.1 is affected by: Buffer Overflow. The impact is: execute arbitrary code remote. The component is: DNS response processing functions: dnsupcall, getoffset, dncsetanswer. The attack vector is: a specific DNS response packet. The code does not che...

CVE-2020-25927

The DNS feature in InterNiche NicheStack TCP/IP 4.0.1 is affected by: Out-of-bounds Read. The impact is: a denial of service remote. The component is: DNS response processing in function: dnsupcall. The attack vector is: a specific DNS response packet. The code does not check whether the number o...

CVE-2020-25928

The DNS feature in InterNiche NicheStack TCP/IP 4.0.1 is affected by: Buffer Overflow. The impact is: execute arbitrary code remote. The component is: DNS response processing functions: dnsupcall, getoffset, dncsetanswer. The attack vector is: a specific DNS response packet. The code does not che...

CVE-2020-25926

The DNS client in InterNiche NicheStack TCP/IP 4.0.1 is affected by: Insufficient entropy in the DNS transaction id. The impact is: DNS cache poisoning remote. The component is: dnsquerytype. The attack vector is: a specific DNS response packet...

CVE-2020-25927

The DNS feature in InterNiche NicheStack TCP/IP 4.0.1 is affected by: Out-of-bounds Read. The impact is: a denial of service remote. The component is: DNS response processing in function: dnsupcall. The attack vector is: a specific DNS response packet. The code does not check whether the number o...

Remote code execution

The DNS feature in InterNiche NicheStack TCP/IP 4.0.1 is affected by: Buffer Overflow. The impact is: execute arbitrary code remote. The component is: DNS response processing functions: dnsupcall, getoffset, dncsetanswer. The attack vector is: a specific DNS response packet. The code does not che...

Design/Logic Flaw

The DNS feature in InterNiche NicheStack TCP/IP 4.0.1 is affected by: Out-of-bounds Read. The impact is: a denial of service remote. The component is: DNS response processing in function: dnsupcall. The attack vector is: a specific DNS response packet. The code does not check whether the number o...

Design/Logic Flaw

The DNS client in InterNiche NicheStack TCP/IP 4.0.1 is affected by: Insufficient entropy in the DNS transaction id. The impact is: DNS cache poisoning remote. The component is: dnsquerytype. The attack vector is: a specific DNS response packet...

CVE-2020-25928

The DNS feature in InterNiche NicheStack TCP/IP 4.0.1 is affected by: Buffer Overflow. The impact is: execute arbitrary code remote. The component is: DNS response processing functions: dnsupcall, getoffset, dncsetanswer. The attack vector is: a specific DNS response packet. The code does not che...

CVE-2020-25928

The CVE-2020-25928 issue is in HCC Embedded’s InterNiche/NicheStack DNS response processing. The vulnerability stems from not validating the length of DNS answer data, which can cause out-of-bounds reads/writes in dns_upcall(), getoffset(), and dnc_set_answer(). This can enable information leakag...

CVE-2020-25927

The DNS feature in InterNiche NicheStack TCP/IP 4.0.1 is affected by: Out-of-bounds Read. The impact is: a denial of service remote. The component is: DNS response processing in function: dnsupcall. The attack vector is: a specific DNS response packet. The code does not check whether the number o...

CVE-2020-25927

CVE-2020-25927 targets InterNiche/NicheStack TCP/IP (pre-4.3). The DNS response processing path dns_upcall() does not validate the DNS header’s query/response counts against the packet data, causing an out-of-bounds read and potential remote DoS. The ICS/CISA advisory Update B lists this issue am...

CVE-2020-25926

The DNS client in InterNiche NicheStack TCP/IP 4.0.1 is affected by: Insufficient entropy in the DNS transaction id. The impact is: DNS cache poisoning remote. The component is: dnsquerytype. The attack vector is: a specific DNS response packet...

CVE-2020-25926

Summary of CVE-2020-25926 (INFRA:HALT) in HCC Embedded/NicheStack: The DNS client in InterNiche NicheStack TCP/IP (pre-4.3) suffers from insufficient entropy in DNS transaction IDs, enabling remote DNS cache poisoning via specially crafted responses. The related ICS/National advisories enumerate ...