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Details of issue NIXPKGS-2026-1989

NIXPKGS-2026-1989
published an hour ago
nsd: security issues < 4.14.3
Permalink CVE-2026-12246
7.2 HIGH
  • CVSS version (CVSS): 4.0
  • Attack Vector (AV): Network (N)
  • Attack Complexity (AC): Low (L)
  • Attack Requirement (AT): None (N)
  • Privileges Required (PR): Low (L)
  • User Interaction (UI): None (N)
  • Vulnerable System Impact Confidentiality (VC): None (N)
  • Vulnerable System Impact Integrity (VI): High (H)
  • Vulnerable System Impact Availability (VA): High (H)
  • Subsequent System Impact Confidentiality (SC): None (N)
  • Subsequent System Impact Integrity (SI): None (N)
  • Subsequent System Impact Availability (SA): None (N)
  • Modified Attack Vector (MAV): Network (N)
  • Modified Attack Complexity (MAC): Low (L)
  • Modified Attack Requirement (MAT): None (N)
  • Modified Privileges Required (MPR): Low (L)
  • Modified User Interaction (MUI): None (N)
  • Modified Vulnerable System Impact Confidentiality (MVC): None (N)
  • Modified Vulnerable System Impact Integrity (MVI): High (H)
  • Modified Vulnerable System Impact Availability (MVA): High (H)
  • Modified Subsequent System Impact Confidentiality (MSC): Negligible (N)
  • Modified Subsequent System Impact Integrity (MSI): Negligible (N)
  • Modified Subsequent System Impact Availability (MSA): Negligible (N)
  • Safety (S): Not Defined (X)
  • Automatable (AU): Not Defined (X)
  • Recovery (R): Not Defined (X)
  • Value Density (V): Not Defined (X)
  • Vulnerability Response Effort (RE): Not Defined (X)
  • Provider Urgency (U): Not Defined (X)
  • Confidentiality Req. (CR): Not Defined (X)
  • Integrity Req. (IR): Not Defined (X)
  • Availability Req. (AR): Not Defined (X)
  • Exploit Maturity (E): Not Defined (X)
updated an hour ago by @LeSuisse Activity log
  • Created suggestion 8 hours ago
  • @LeSuisse ignored
    20 packages
    • pdnsd
    • dnsdbq
    • nsdiff
    • dnsdiag
    • dnsdist
    • zeronsd
    • adidnsdump
    • perlPackages.nsdiff
    • perl5Packages.nsdiff
    • perl538Packages.nsdiff
    • perl540Packages.nsdiff
    • idrisPackages.transducers
    • python312Packages.webexpythonsdk
    • python313Packages.webexpythonsdk
    • python314Packages.webexpythonsdk
    • python312Packages.awsiotpythonsdk
    • python313Packages.awsiotpythonsdk
    • python314Packages.awsiotpythonsdk
    • vscode-extensions.nsd.vscode-epics
    • chickenPackages_5.chickenEggs.transducers
    an hour ago
  • @LeSuisse accepted an hour ago
  • @LeSuisse published on GitHub an hour ago
Out of bounds stack write with crafted APL RR

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.

Affected products

NSD
  • <4.14.3

Matching in nixpkgs

pkgs.nsd

Authoritative only, high performance, simple and open source name server

Ignored packages (20)

pkgs.dnsdbq

C99 program that accesses passive DNS database systems

pkgs.nsdiff

Create a "nsupdate" script from DNS zone file differences

  • nixos-unstable 1.85
    • nixpkgs-unstable 1.85
    • nixos-unstable-small 1.85
  • nixos-26.05 1.85
    • nixos-26.05-small 1.85
    • nixpkgs-26.05-darwin 1.85

pkgs.dnsdiag

DNS Measurement, Troubleshooting and Security Auditing Toolset

pkgs.adidnsdump

Active Directory Integrated DNS dumping by any authenticated user

pkgs.perlPackages.nsdiff

Create a "nsupdate" script from DNS zone file differences

  • nixos-unstable 1.85
    • nixpkgs-unstable 1.85
    • nixos-unstable-small 1.85
  • nixos-26.05 1.85
    • nixos-26.05-small 1.85
    • nixpkgs-26.05-darwin 1.85

Package maintainers

Permalink CVE-2026-12244
8.7 HIGH
  • CVSS version (CVSS): 4.0
  • Attack Vector (AV): Network (N)
  • Attack Complexity (AC): Low (L)
  • Attack Requirement (AT): None (N)
  • Privileges Required (PR): Low (L)
  • User Interaction (UI): None (N)
  • Vulnerable System Impact Confidentiality (VC): High (H)
  • Vulnerable System Impact Integrity (VI): High (H)
  • Vulnerable System Impact Availability (VA): High (H)
  • Subsequent System Impact Confidentiality (SC): None (N)
  • Subsequent System Impact Integrity (SI): None (N)
  • Subsequent System Impact Availability (SA): None (N)
  • Modified Attack Vector (MAV): Network (N)
  • Modified Attack Complexity (MAC): Low (L)
  • Modified Attack Requirement (MAT): None (N)
  • Modified Privileges Required (MPR): Low (L)
  • Modified User Interaction (MUI): None (N)
  • Modified Vulnerable System Impact Confidentiality (MVC): High (H)
  • Modified Vulnerable System Impact Integrity (MVI): High (H)
  • Modified Vulnerable System Impact Availability (MVA): High (H)
  • Modified Subsequent System Impact Confidentiality (MSC): Negligible (N)
  • Modified Subsequent System Impact Integrity (MSI): Negligible (N)
  • Modified Subsequent System Impact Availability (MSA): Negligible (N)
  • Safety (S): Not Defined (X)
  • Automatable (AU): Not Defined (X)
  • Recovery (R): Not Defined (X)
  • Value Density (V): Not Defined (X)
  • Vulnerability Response Effort (RE): Not Defined (X)
  • Provider Urgency (U): Not Defined (X)
  • Confidentiality Req. (CR): Not Defined (X)
  • Integrity Req. (IR): Not Defined (X)
  • Availability Req. (AR): Not Defined (X)
  • Exploit Maturity (E): Not Defined (X)
updated an hour ago by @LeSuisse Activity log
  • Created suggestion 8 hours ago
  • @LeSuisse ignored
    20 packages
    • pdnsd
    • dnsdbq
    • nsdiff
    • dnsdiag
    • dnsdist
    • zeronsd
    • adidnsdump
    • perlPackages.nsdiff
    • perl5Packages.nsdiff
    • perl538Packages.nsdiff
    • perl540Packages.nsdiff
    • idrisPackages.transducers
    • python312Packages.webexpythonsdk
    • python313Packages.webexpythonsdk
    • python314Packages.webexpythonsdk
    • python312Packages.awsiotpythonsdk
    • python313Packages.awsiotpythonsdk
    • python314Packages.awsiotpythonsdk
    • chickenPackages_5.chickenEggs.transducers
    • vscode-extensions.nsd.vscode-epics
    an hour ago
  • @LeSuisse accepted an hour ago
  • @LeSuisse published on GitHub an hour ago
Heap overflow and crash with crafted SVCB RR

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 (uint16_t) variable that is used to allocate space needed for the RR wrap (because total size > 65535), causing a heap overflow. The attacker can perform a controlled (RCE class) head write of up to 65509 bytes

Affected products

NSD
  • <4.14.3

Matching in nixpkgs

pkgs.nsd

Authoritative only, high performance, simple and open source name server

Ignored packages (20)

pkgs.dnsdbq

C99 program that accesses passive DNS database systems

pkgs.nsdiff

Create a "nsupdate" script from DNS zone file differences

  • nixos-unstable 1.85
    • nixpkgs-unstable 1.85
    • nixos-unstable-small 1.85
  • nixos-26.05 1.85
    • nixos-26.05-small 1.85
    • nixpkgs-26.05-darwin 1.85

pkgs.dnsdiag

DNS Measurement, Troubleshooting and Security Auditing Toolset

pkgs.adidnsdump

Active Directory Integrated DNS dumping by any authenticated user

pkgs.perlPackages.nsdiff

Create a "nsupdate" script from DNS zone file differences

  • nixos-unstable 1.85
    • nixpkgs-unstable 1.85
    • nixos-unstable-small 1.85
  • nixos-26.05 1.85
    • nixos-26.05-small 1.85
    • nixpkgs-26.05-darwin 1.85

Package maintainers

Permalink CVE-2026-12490
8.2 HIGH
  • CVSS version (CVSS): 4.0
  • Attack Vector (AV): Network (N)
  • Attack Complexity (AC): High (H)
  • Attack Requirement (AT): None (N)
  • Privileges Required (PR): None (N)
  • User Interaction (UI): None (N)
  • Vulnerable System Impact Confidentiality (VC): High (H)
  • Vulnerable System Impact Integrity (VI): None (N)
  • Vulnerable System Impact Availability (VA): None (N)
  • Subsequent System Impact Confidentiality (SC): None (N)
  • Subsequent System Impact Integrity (SI): None (N)
  • Subsequent System Impact Availability (SA): None (N)
  • Modified Attack Vector (MAV): Network (N)
  • Modified Attack Complexity (MAC): High (H)
  • Modified Attack Requirement (MAT): None (N)
  • Modified Privileges Required (MPR): None (N)
  • Modified User Interaction (MUI): None (N)
  • Modified Vulnerable System Impact Confidentiality (MVC): High (H)
  • Modified Vulnerable System Impact Integrity (MVI): None (N)
  • Modified Vulnerable System Impact Availability (MVA): None (N)
  • Modified Subsequent System Impact Confidentiality (MSC): Negligible (N)
  • Modified Subsequent System Impact Integrity (MSI): Negligible (N)
  • Modified Subsequent System Impact Availability (MSA): Negligible (N)
  • Safety (S): Not Defined (X)
  • Automatable (AU): Not Defined (X)
  • Recovery (R): Not Defined (X)
  • Value Density (V): Not Defined (X)
  • Vulnerability Response Effort (RE): Not Defined (X)
  • Provider Urgency (U): Not Defined (X)
  • Confidentiality Req. (CR): Not Defined (X)
  • Integrity Req. (IR): Not Defined (X)
  • Availability Req. (AR): Not Defined (X)
  • Exploit Maturity (E): Not Defined (X)
updated an hour ago by @LeSuisse Activity log
  • Created suggestion 8 hours ago
  • @LeSuisse ignored
    20 packages
    • pdnsd
    • dnsdbq
    • nsdiff
    • dnsdiag
    • dnsdist
    • zeronsd
    • adidnsdump
    • perlPackages.nsdiff
    • perl5Packages.nsdiff
    • perl538Packages.nsdiff
    • perl540Packages.nsdiff
    • idrisPackages.transducers
    • python312Packages.webexpythonsdk
    • python313Packages.webexpythonsdk
    • python314Packages.webexpythonsdk
    • python312Packages.awsiotpythonsdk
    • python313Packages.awsiotpythonsdk
    • python314Packages.awsiotpythonsdk
    • vscode-extensions.nsd.vscode-epics
    • chickenPackages_5.chickenEggs.transducers
    an hour ago
  • @LeSuisse accepted an hour ago
  • @LeSuisse published on GitHub an hour ago
Bypass of client certificate verification with transfer over TLS

When a provide-xfr is given with a tls-auth-name, a secondary requesting a transfer should provide a client certificate with that name. However, no client certificate is needed when the request comes in over TLS over the regular tls-port (and not the tls-auth-port) or over over TCP over the regular port, when the other conditions of the provide-xfr rule match.

Affected products

NSD
  • <4.14.3

Matching in nixpkgs

pkgs.nsd

Authoritative only, high performance, simple and open source name server

Ignored packages (20)

pkgs.dnsdbq

C99 program that accesses passive DNS database systems

pkgs.nsdiff

Create a "nsupdate" script from DNS zone file differences

  • nixos-unstable 1.85
    • nixpkgs-unstable 1.85
    • nixos-unstable-small 1.85
  • nixos-26.05 1.85
    • nixos-26.05-small 1.85
    • nixpkgs-26.05-darwin 1.85

pkgs.dnsdiag

DNS Measurement, Troubleshooting and Security Auditing Toolset

pkgs.adidnsdump

Active Directory Integrated DNS dumping by any authenticated user

pkgs.perlPackages.nsdiff

Create a "nsupdate" script from DNS zone file differences

  • nixos-unstable 1.85
    • nixpkgs-unstable 1.85
    • nixos-unstable-small 1.85
  • nixos-26.05 1.85
    • nixos-26.05-small 1.85
    • nixpkgs-26.05-darwin 1.85

Package maintainers

Permalink CVE-2026-12245
8.7 HIGH
  • CVSS version (CVSS): 4.0
  • Attack Vector (AV): Network (N)
  • Attack Complexity (AC): Low (L)
  • Attack Requirement (AT): None (N)
  • Privileges Required (PR): None (N)
  • User Interaction (UI): None (N)
  • Vulnerable System Impact Confidentiality (VC): None (N)
  • Vulnerable System Impact Integrity (VI): None (N)
  • Vulnerable System Impact Availability (VA): High (H)
  • Subsequent System Impact Confidentiality (SC): None (N)
  • Subsequent System Impact Integrity (SI): None (N)
  • Subsequent System Impact Availability (SA): None (N)
  • Modified Attack Vector (MAV): Network (N)
  • Modified Attack Complexity (MAC): Low (L)
  • Modified Attack Requirement (MAT): None (N)
  • Modified Privileges Required (MPR): None (N)
  • Modified User Interaction (MUI): None (N)
  • Modified Vulnerable System Impact Confidentiality (MVC): None (N)
  • Modified Vulnerable System Impact Integrity (MVI): None (N)
  • Modified Vulnerable System Impact Availability (MVA): High (H)
  • Modified Subsequent System Impact Confidentiality (MSC): Negligible (N)
  • Modified Subsequent System Impact Integrity (MSI): Negligible (N)
  • Modified Subsequent System Impact Availability (MSA): Negligible (N)
  • Safety (S): Not Defined (X)
  • Automatable (AU): Not Defined (X)
  • Recovery (R): Not Defined (X)
  • Value Density (V): Not Defined (X)
  • Vulnerability Response Effort (RE): Not Defined (X)
  • Provider Urgency (U): Not Defined (X)
  • Confidentiality Req. (CR): Not Defined (X)
  • Integrity Req. (IR): Not Defined (X)
  • Availability Req. (AR): Not Defined (X)
  • Exploit Maturity (E): Not Defined (X)
updated an hour ago by @LeSuisse Activity log
  • Created suggestion 8 hours ago
  • @LeSuisse ignored
    20 packages
    • pdnsd
    • dnsdbq
    • nsdiff
    • dnsdiag
    • dnsdist
    • zeronsd
    • adidnsdump
    • perlPackages.nsdiff
    • perl5Packages.nsdiff
    • perl538Packages.nsdiff
    • perl540Packages.nsdiff
    • idrisPackages.transducers
    • python312Packages.webexpythonsdk
    • python313Packages.webexpythonsdk
    • python314Packages.webexpythonsdk
    • python312Packages.awsiotpythonsdk
    • python313Packages.awsiotpythonsdk
    • python314Packages.awsiotpythonsdk
    • vscode-extensions.nsd.vscode-epics
    • chickenPackages_5.chickenEggs.transducers
    an hour ago
  • @LeSuisse accepted an hour ago
  • @LeSuisse published on GitHub an hour ago
Denial of DNS over TLS service by any DoT client

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.

Affected products

NSD
  • <4.14.3

Matching in nixpkgs

pkgs.nsd

Authoritative only, high performance, simple and open source name server

Ignored packages (20)

pkgs.dnsdbq

C99 program that accesses passive DNS database systems

pkgs.nsdiff

Create a "nsupdate" script from DNS zone file differences

  • nixos-unstable 1.85
    • nixpkgs-unstable 1.85
    • nixos-unstable-small 1.85
  • nixos-26.05 1.85
    • nixos-26.05-small 1.85
    • nixpkgs-26.05-darwin 1.85

pkgs.dnsdiag

DNS Measurement, Troubleshooting and Security Auditing Toolset

pkgs.adidnsdump

Active Directory Integrated DNS dumping by any authenticated user

pkgs.perlPackages.nsdiff

Create a "nsupdate" script from DNS zone file differences

  • nixos-unstable 1.85
    • nixpkgs-unstable 1.85
    • nixos-unstable-small 1.85
  • nixos-26.05 1.85
    • nixos-26.05-small 1.85
    • nixpkgs-26.05-darwin 1.85

Package maintainers