Astra Linux – Vulnerability in dnsmasq

A issue was discovered in Dnsmasq before version 2.90. The default maximum EDNS.0 UDP packet size was set to 4096, but it should be 1232 due to DNS Flag Day 2020...

Astra Linux – Vulnerability in c-ares

A flaw was discovered in the c-ares library. A missing input validation check for host names returned by DNS Domain Name Servers can result in incorrect hostnames being displayed. This could potentially lead to Domain Hijacking. The greatest threat posed by this vulnerability is related to...

Astra Linux – Vulnerability in bind9

By flooding the target resolver with queries that exploit this flaw, an attacker can significantly impair the resolver’s performance, effectively denying legitimate clients access to the DNS resolution service...

Astra Linux – Vulnerability in connman

A issue was discovered in the DNS proxy of Connman through version 1.40. The implementation of the TCP server’s reply mechanism lacks a check to ensure that there is sufficient Header Data, resulting in an out-of-bounds read...

Astra Linux – Vulnerability in Golang-1.15

Avoid versions before 1.15.13 and 1.16.x, as well as those before 1.16.5, which have functions for DNS lookups that do not validate replies from DNS servers. As a result, a return value might contain an unsafe injection e.g., XSS, which does not conform to the RFC1035 format...

Authentication Bypass by Alternate Name

Overview Affected versions of this package are vulnerable to Authentication Bypass by Alternate Name via the hostname-based access control list enforcement process when configured with chroot. An attacker can gain unauthorized access by manipulating the PTR record for their source IP address,...

[SECURITY] Fedora 43 Update: dnsmasq-2.92rel2-2.fc43

Dnsmasq is lightweight, easy to configure DNS forwarder and DHCP server. It is designed to provide DNS and, optionally, DHCP, to a small network. It can serve the names of local machines which are not in the global DNS. The DHCP server integrates with the DNS server and allows machines with...

ISC BIND 9 资源管理错误漏洞

ISC BIND 9 is a domain name system software developed by the ISC organization. ISC BIND 9 has a resource management vulnerability, which stems from the reuse of resources after release in the DNS-over-HTTPS implementation. The following versions are affected: 9.20.0 to 9.20.22, 9.21.0 to 9.21.21,...

NLnet Labs Unbound 安全漏洞

NLnet Labs Unbound is a high-performance DNS resolver open-sourced by NLnet Labs. Versions of NLnet Labs Unbound 1.25.0 and earlier contained security vulnerabilities. These vulnerabilities stemmed from the possibility of service degradation when processing a large number of incoming EDNS options...

ISC BIND 9 安全漏洞

ISC BIND 9 is a domain name system software developed by the ISC organization. ISC BIND 9 has a security vulnerability that arises from the use of TKEY authentication based on GSS-API tokens. Processing maliciously constructed packets may lead to excessive memory consumption. The following versio...

UBUNTU-CVE-2026-3593

A use-after-free vulnerability exists within the DNS-over-HTTPS implementation. This issue affects BIND 9 versions 9.20.0 through 9.20.22, 9.21.0 through 9.21.21, and 9.20.9-S1 through 9.20.22-S1. BIND 9 versions 9.18.0 through 9.18.48 and 9.18.11-S1 through 9.18.48-S1 are NOT affected...

UBUNTU-CVE-2026-5947

Undefined behavior may result due to a race condition leading to a use-after-free violation. If BIND receives an incoming DNS message signed with SIG0, it begins work to validate that signature. If, during that validation, the "recursive-clients" limit is reached as would occur during a query...

UBUNTU-CVE-2026-33278

NLnet Labs Unbound 1.19.1 up to and including version 1.25.0 has a vulnerability in the DNSSEC validator that enables denial of service and possible remote code execution as a result of deep copying a data structure and erroneously overwriting a destination pointer. An adversary can exploit the...

ISC BIND 9 安全漏洞

ISC BIND 9 is a domain name system software developed by the ISC organization. ISC BIND 9 has a security vulnerability that stems from the parser’s susceptibility to resource exhaustion attacks. If a victim’s parser sends queries to a specially crafted zone, the parser will consume disproportiona...

PT-2026-42131

Name of the Vulnerable Software and Affected Versions NLnet Labs Unbound versions 1.14.0 through 1.25.0 Description A heap overflow occurs when encoding multiple NSID, DNS Cookie EDNS, and EDNS Padding options in a reply packet. This happens because a flaw in the size calculation of the EDNS fiel...

CVE-2026-42944

NLnet Labs Unbound 1.14.0 up to and including version 1.25.0 has a vulnerability that results in heap overflow when encoding multiple NSID and/or DNS Cookie EDNS and/or EDNS Padding options in the reply packet. The relevant options 'nsid', 'answer-cookie', 'pad-responses' default need to be enabl...

NLnet Labs Unbound 缓冲区错误漏洞

NLnet Labs Unbound is a high-performance DNS resolver open-sourced by NLnet Labs. Versions of NLnet Labs Unbound 1.25.0 and earlier contained a buffer error vulnerability. This vulnerability stemmed from the use of incorrect counters in the DNSSEC verifier to calculate the write offset, resulting...

CVE-2026-3593

A use-after-free vulnerability exists within the DNS-over-HTTPS implementation. This issue affects BIND 9 versions 9.20.0 through 9.20.22, 9.21.0 through 9.21.21, and 9.20.9-S1 through 9.20.22-S1. BIND 9 versions 9.18.0 through 9.18.48 and 9.18.11-S1 through 9.18.48-S1 are NOT affected...

dnsmasq: dnsmasq: heap buffer overflow in cache via NAME_ESCAPE expansion

A heap buffer overflow was discovered in dnsmasq's DNS cache. When processing DNS responses, dnsmasq expands certain characters into longer escape sequences, but the cache buffer is not sized to hold the expanded result. A specially crafted DNS response can overflow this buffer, potentially...

Updated bind packages fix security vulnerabilities

It was discovered that bind contained a vulnerability where a Malformed BRID/HHIT record can cause named to terminate unexpectedly CVE-2025-13878. If a BIND resolver is performing DNSSEC validation and encounters a maliciously crafted zone, the resolver may consume excessive CPU. Authoritative-on...