
CVE-2020-28935 – Local symlink attack in Unbound and NSD
https://notcve.org/view.php?id=CVE-2020-28935
07 Dec 2020 — NLnet Labs Unbound, up to and including version 1.12.0, and NLnet Labs NSD, up to and including version 4.3.3, contain a local vulnerability that would allow for a local symlink attack. When writing the PID file, Unbound and NSD create the file if it is not there, or open an existing file for writing. In case the file was already present, they would follow symlinks if the file happened to be a symlink instead of a regular file. An additional chown of the file would then take place after it was written, maki... • https://lists.debian.org/debian-lts-announce/2021/02/msg00017.html • CWE-59: Improper Link Resolution Before File Access ('Link Following') •

CVE-2012-2979
https://notcve.org/view.php?id=CVE-2012-2979
01 Nov 2019 — FreeBSD NSD before 3.2.13 allows remote attackers to crash a NSD child server process (SIGSEGV) and cause a denial of service in the NSD server. FreeBSD NSD versiones anteriores a 3.2.13, permite a atacantes remotos bloquear un proceso de un servidor secundario NSD (SIGSEGV) y causar una denegación de servicio en el servidor NSD. • https://security-tracker.debian.org/tracker/CVE-2012-2979 • CWE-669: Incorrect Resource Transfer Between Spheres •

CVE-2019-13207 – openSUSE Security Advisory - openSUSE-SU-2020:2222-1
https://notcve.org/view.php?id=CVE-2019-13207
03 Jul 2019 — nsd-checkzone in NLnet Labs NSD 4.2.0 has a Stack-based Buffer Overflow in the dname_concatenate() function in dname.c. nsd-checkzone en NLnet Labs NSD versión 4.2.0 tiene un Desbordamiento de búfer basado en pila en la función dname_concatenate () en dname.c. An update that fixes two vulnerabilities is now available. This update for nsd fixes the following issues. • https://github.com/NLnetLabs/nsd/issues/20 • CWE-787: Out-of-bounds Write •