ICSA-21-217-01: HCC Embedded InterNiche TCP/IP stack, NicheLite (Update B)
When parsing DNS domain names, there are no checks on whether a domain name compression pointer is pointing within the bounds of the packet, which may result in an out-of-bounds read.CVE-2020-25767 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H). The routine for parsing DNS response packets does not check the response data length field of individual DNS answers, which may cause an out-of-bounds read/write.CVE-2020-25928 has been assigned to this vulnerability. A CVSS v3 base score of 9.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H). The number of queries or responses specified in the DNS packet header is not validated with the query/response data available in the DNS packet, leading to an out-of-bounds read.CVE-2020-25927 has been assigned to this vulnerability. A CVSS v3 base score of 8.2 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H). The DNS client does not sufficiently randomize transaction IDs, facilitating DNS cache poisoning attacks.CVE-2020-25926 has been assigned to this vulnerability. A CVSS v3 base score of 4.0 has been calculated; the CVSS vector string is (AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N). The code that parses ICMP packets relies on an unchecked value of the IP payload size to compute the ICMP checksum, which may result in an out-of-bounds read.CVE-2020-35683 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H). The code that parses TCP packets relies on an unchecked value of the IP payload size to compute the length of the TCP payload within the TCP checksum computation function, which may result in an out-of-bounds read.CVE-2020-35684 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H). TCP ISNs are insufficiently randomized, which may result in TCP spoofing by an attacker.CVE-2020-35685 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N). The TCP urgent data processing function may invoke a panic function, which may result in an infinite loop.CVE-2021-31400 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N). An attacker could send a specially crafted IP packet to trigger an integer overflow due to the lack of IP length validation.CVE-2021-31401 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N). A potential heap buffer overflow exists in the code that parses the HTTP POST request due to lack of size validation.CVE-2021-31226 has been assigned to this vulnerability. A CVSS v3 base score of 9.1 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H). A potential heap buffer overflow exists in the code that parses the HTTP POST request due to an incorrect signed integer comparison.CVE-2021-31227 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N). An attacker may be able to predict DNS queries ' source port to then send forged DNS response packets, which may be accepted as valid answers.CVE-2021-31228 has been assigned to this vulnerability. A CVSS v3 base score of 4.0 has been calculated; the CVSS vector string is (AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N). Unhandled HTTP requests result in an infinite loop that disrupts TCP/IP communication.CVE-2021-27565 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N). The TFTP packet processing function does not ensure that the filename is null-terminated, which may result in a denial-of-service condition.CVE-2021-36762 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N).
CVSS v3.0: 7.5