https://vulnerability.circl.lu/rss/recent/all/10 Most recent entries from all 2026-09-28T22:57:50.150840+00:00 Vulnerability-Lookup info@circl.lu python-feedgen Contains only the most 10 recent entries. https://vulnerability.circl.lu/vuln/fkie_cve-2026-18664 fkie_cve-2026-18664 2026-09-28T22:57:50.312908+00:00

When ranges are used for access control (i.e. of the form 1.2.3.4-1.2.3.25), because NSD wrongly compares the IP address with the range on little endian systems, IPs that were meant to be allowed may be denied, and, IPs that were meant to be denied access could be allowed. An IPv4 address is compared with IPv4 ranges as unsigned 32 bit numbers directly with the endianness of the host, but the values to compare are in network byte order (big-endian). With IPv6 addresses the comparison is done in 4 times a unsigned 32 bit number comparison, again with the endianness of the host where all values are actually in network bye order.

 https://vulnerability.circl.lu/vuln/ghsa-fw9f-54cp-j7fc GHSA-fw9f-54cp-j7fc 2026-09-28T22:57:50.313021+00:00

When ranges are used for access control (i.e. of the form 1.2.3.4-1.2.3.25), because NSD wrongly compares the IP address with the range on little endian systems, IPs that were meant to be allowed may be denied, and, IPs that were meant to be denied access could be allowed. An IPv4 address is compared with IPv4 ranges as unsigned 32 bit numbers directly with the endianness of the host, but the values to compare are in network byte order (big-endian). With IPv6 addresses the comparison is done in 4 times a unsigned 32 bit number comparison, again with the endianness of the host where all values are actually in network bye order.

 https://vulnerability.circl.lu/vuln/ubuntu-cve-2026-18664 UBUNTU-CVE-2026-18664 2026-09-28T22:57:50.313061+00:00

Affected: Ubuntu:Pro:16.04:LTS: nsd, Ubuntu:Pro:18.04:LTS: nsd, Ubuntu:Pro:20.04:LTS: nsd, Ubuntu:Pro:22.04:LTS: nsd, Ubuntu:Pro:24.04:LTS: nsd, Ubuntu:Pro:26.04:LTS: nsd

When ranges are used for access control (i.e. of the form 1.2.3.4-1.2.3.25), because NSD wrongly compares the IP address with the range on little endian systems, IPs that were meant to be allowed may be denied, and, IPs that were meant to be denied access could be allowed. An IPv4 address is compared with IPv4 ranges as unsigned 32 bit numbers directly with the endianness of the host, but the values to compare are in network byte order (big-endian). With IPv6 addresses the comparison is done in 4 times a unsigned 32 bit number comparison, again with the endianness of the host where all values are actually in network bye order.