187 matches found
CVE-2026-19401 Remote UDP DoS by sending multiple DNS Cookie options
NSD (Name Server Daemon) is vulnerable to a remote UDP denial-of-service targeting its serve child process. An unauthenticated remote attacker can crash the serve child by sending a crafted UDP message containing a specially tuned number of DNS Cookie options (17 when the UDP payload size is 512)...
CVE-2026-18916 Remote TCP DoS by throttling the TCP receive window
NSD (the Name Server Daemon by NLNet Labs) is vulnerable to a remote TCP denial-of-service attack. Any remote client can crash an NSD serve child process by throttling the TCP receive window after issuing a TCP query. By repeatedly crashing serve child processes, an unauthenticated remote attacke...
CVE-2026-18664 Wrong interpretation of ACL ranges
NSD (a DNS server maintained by NLnet Labs) contains a flaw in its ACL range comparison logic. On little-endian systems , IP addresses are compared using the host's native endianness instead of network byte order (big-endian) , which is the correct format for the stored values. This affects both ...
nsd
NSD Il Name Server Daemon dei NLnet Labs NSD è un server DNS autoritativo. È stato sviluppato per ambienti operativi in cui velocità, affidabilità, stabilità e sicurezza sono di fondamentale importanza. Se hai qualsiasi feedback, ci farebbe piacere riceverlo. Non esitare a creare un issue su Gith...
Security update for nsd (important)
openSUSE Security Update: Security update for nsd Announcement ID: openSUSE-SU-2026:0265-1 Rating: important References: 1269563 1269564 1269565 1269566 Cross-References: CVE-2026-12244 CVE-2026-12245 CVE-2026-12246 CVE-2026-12490 Affected Products: openSUSE Backports SLE-15-SP7 An update that...
[SECURITY] Fedora 44 Update: nsd-4.14.3-1.fc44
NSD is a complete implementation of an authoritative DNS name server. For further information about what NSD is and what NSD is not please consult the REQUIREMENTS document which is a part of this distribution...
Linux Distros Unpatched Vulnerability : CVE-2026-12245
The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - NSD from version 4.13.0 has a heap use-after-free bug in logging errors on TLS connections, causing a crash of the server process, which can be triggered...
Linux Distros Unpatched Vulnerability : CVE-2026-12244
The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - If NSD is configured as secondary for a zone, the primary of that zone can crash NSD with an AXFR containing a DNS message with a special crafted SVCB RR with a...
EUVD-2026-39183
NSD from version 4.13.0 has a heap use-after-free bug in logging errors on TLS connections, causing a crash of the server process, which can be triggered trivially by sending a DNS query over a DoT connection, and closing the connection without reading the response...
CVE-2026-12246
NSD version 4.14.0 introduced a bug where a specially crafted APL RR, with an adflength larger than permitted for the address family will overwrite the stack when the zone is written to disk, with a maximum of 111 attacker controlled bytes...
CVE-2026-12245
NSD from version 4.13.0 has a heap use-after-free bug in logging errors on TLS connections, causing a crash of the server process, which can be triggered trivially by sending a DNS query over a DoT connection, and closing the connection without reading the response...
ALPINE-CVE-2026-12244
If NSD is configured as secondary for a zone, the primary of that zone can crash NSD with an AXFR containing a DNS message with a special crafted SVCB RR with an rdata size of 65512, that let's an uint16t variable that is used to allocate space needed for the RR wrap because total size 65535,...
CVE-2026-12246
NSD version 4.14.0 introduced a bug where a specially crafted APL RR, with an adflength larger than permitted for the address family will overwrite the stack when the zone is written to disk, with a maximum of 111 attacker controlled bytes...
CVE-2026-12246
NSD 4.14.0 contains a vulnerability where a specially crafted APL RR with adflength exceeding the address family limit can cause a stack overwrite when writing the zone to disk, allowing up to 111 attacker-controlled bytes to influence memory. This is a data/stack corruption issue that affects th...
CVE-2026-12245
NSD from version 4.13.0 has a heap use-after-free bug in logging errors on TLS connections, causing a crash of the server process, which can be triggered trivially by sending a DNS query over a DoT connection, and closing the connection without reading the response...
CVE-2026-12244
If NSD is configured as secondary for a zone, the primary of that zone can crash NSD with an AXFR containing a DNS message with a special crafted SVCB RR with an rdata size of 65512, that let's an uint16t variable that is used to allocate space needed for the RR wrap because total size 65535,...
UBUNTU-CVE-2026-12246
NSD version 4.14.0 introduced a bug where a specially crafted APL RR, with an adflength larger than permitted for the address family will overwrite the stack when the zone is written to disk, with a maximum of 111 attacker controlled bytes...
UBUNTU-CVE-2026-12244
If NSD is configured as secondary for a zone, the primary of that zone can crash NSD with an AXFR containing a DNS message with a special crafted SVCB RR with an rdata size of 65512, that let's an uint16t variable that is used to allocate space needed for the RR wrap because total size 65535,...
Astra Linux – Vulnerability in unbound
Unbound from NLnet Labs, including versions up to and including 1.12.0, and NSD from NLnet Labs, including versions up to and including 4.3.3, contain a local vulnerability that allows for a local symlink attack. When creating the PID file, Unbound and NSD either create the file if it does not...