Описание
Security update for bind
This update for bind fixes the following issues
Upgrade to release 9.20.23:
- CVE-2026-3039: BIND 9 server memory exhaustion during GSS-API TKEY negotiation (bsc#1265591).
- CVE-2026-3592: Amplification vulnerabilities via self-pointed glue records (bsc#1265592).
- CVE-2026-3593: Heap use-after-free vulnerability in BIND 9 DNS-over-HTTPS implementation (bsc#1265593).
- CVE-2026-5946: Invalid handling of CLASS != IN (bsc#1265594).
- CVE-2026-5947: SIG(0) validation during query flood may lead to undefined behavior (bsc#1265595).
- CVE-2026-5950: Unbounded resend loop in BIND 9 resolver (bsc#1265596).
Список пакетов
openSUSE Leap 16.0
Ссылки
- SUSE Security Ratings
- SUSE Bug 1265591
- SUSE Bug 1265592
- SUSE Bug 1265593
- SUSE Bug 1265594
- SUSE Bug 1265595
- SUSE Bug 1265596
- SUSE CVE CVE-2026-3039 page
- SUSE CVE CVE-2026-3592 page
- SUSE CVE CVE-2026-3593 page
- SUSE CVE CVE-2026-5946 page
- SUSE CVE CVE-2026-5947 page
- SUSE CVE CVE-2026-5950 page
Описание
BIND servers that are configured to use TKEY-based authentication via GSS-API tokens are vulnerable to excessive memory consumption when receiving and processing maliciously-constructed packets. Typically these servers will be found in Active Directory integrated DNS deployments and/or Kerberos-secured DNS environments. This issue affects BIND 9 versions 9.0.0 through 9.16.50, 9.18.0 through 9.18.48, 9.20.0 through 9.20.22, 9.21.0 through 9.21.21, 9.9.3-S1 through 9.16.50-S1, 9.18.11-S1 through 9.18.48-S1, and 9.20.9-S1 through 9.20.22-S1.
Затронутые продукты
Ссылки
- CVE-2026-3039
- SUSE Bug 1265591
Описание
BIND resolvers are vulnerable to an amplified resource consumption/exhaustion attack. If a victim resolver makes a query to a specially crafted zone, the resolver will consume disproportionate resources. This issue affects BIND 9 versions 9.11.0 through 9.16.50, 9.18.0 through 9.18.48, 9.20.0 through 9.20.22, 9.21.0 through 9.21.21, 9.11.3-S1 through 9.16.50-S1, 9.18.11-S1 through 9.18.48-S1, and 9.20.9-S1 through 9.20.22-S1.
Затронутые продукты
Ссылки
- CVE-2026-3592
- SUSE Bug 1265592
Описание
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.
Затронутые продукты
Ссылки
- CVE-2026-3593
- SUSE Bug 1265593
Описание
Multiple flaws have been identified in `named` related to the handling of DNS messages whose CLASS is not Internet (`IN`) - for example, `CHAOS` or `HESIOD`, or DNS messages that specify meta-classes (`ANY` or `NONE`) in the question section. Specially crafted requests reaching the affected code paths - recursion, dynamic updates (`UPDATE`), zone change notifications (`NOTIFY`), or processing of `IN`-specific record types in non-`IN` data - can cause assertion failures in `named`. This issue affects BIND 9 versions 9.11.0 through 9.16.50, 9.18.0 through 9.18.48, 9.20.0 through 9.20.22, 9.21.0 through 9.21.21, 9.11.3-S1 through 9.16.50-S1, 9.18.11-S1 through 9.18.48-S1, and 9.20.9-S1 through 9.20.22-S1.
Затронутые продукты
Ссылки
- CVE-2026-5946
- SUSE Bug 1265594
Описание
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 SIG(0), it begins work to validate that signature. If, during that validation, the "recursive-clients" limit is reached (as would occur during a query flood), and that same DNS message is discarded per the limit, there is a brief window of time while the SIG(0) validation may attempt to read the now-discarded DNS message. 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 9.18.28 through 9.18.49 and 9.18.28-S1 through 9.18.49-S1 are NOT affected.
Затронутые продукты
Ссылки
- CVE-2026-5947
- SUSE Bug 1265595
Описание
An unbounded resend loop vulnerability exists in the BIND 9 resolver state machine during bad-server handling, enabling a remote unauthenticated attacker to cause severe resource exhaustion by sending queries that trigger specific retry conditions. This issue affects BIND 9 versions 9.18.36 through 9.18.48, 9.20.8 through 9.20.22, 9.21.7 through 9.21.21, 9.18.36-S1 through 9.18.48-S1, and 9.20.9-S1 through 9.20.22-S1.
Затронутые продукты
Ссылки
- CVE-2026-5950
- SUSE Bug 1265596