vulnerability
Alma Linux: CVE-2023-50868: Important: unbound security update (Multiple Advisories)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 8 | (AV:N/AC:L/Au:N/C:N/I:N/A:C) | Feb 14, 2024 | Feb 29, 2024 | Apr 20, 2026 |
Severity
8
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:C)
Published
Feb 14, 2024
Added
Feb 29, 2024
Modified
Apr 20, 2026
Description
The Closest Encloser Proof aspect of the DNS protocol (in RFC 5155 when RFC 9276 guidance is skipped) allows remote attackers to cause a denial of service (CPU consumption for SHA-1 computations) via DNSSEC responses in a random subdomain attack, aka the "NSEC3" issue. The RFC 5155 specification implies that an algorithm must perform thousands of iterations of a hash function in certain situations.
Solutions
alma-upgrade-bindalma-upgrade-bind-chrootalma-upgrade-bind-develalma-upgrade-bind-dnssec-docalma-upgrade-bind-dnssec-utilsalma-upgrade-bind-docalma-upgrade-bind-dyndb-ldapalma-upgrade-bind-export-develalma-upgrade-bind-export-libsalma-upgrade-bind-libsalma-upgrade-bind-libs-litealma-upgrade-bind-licensealma-upgrade-bind-lite-develalma-upgrade-bind-pkcs11alma-upgrade-bind-pkcs11-develalma-upgrade-bind-pkcs11-libsalma-upgrade-bind-pkcs11-utilsalma-upgrade-bind-sdbalma-upgrade-bind-sdb-chrootalma-upgrade-bind-utilsalma-upgrade-bind9.16alma-upgrade-bind9.16-chrootalma-upgrade-bind9.16-develalma-upgrade-bind9.16-dnssec-utilsalma-upgrade-bind9.16-docalma-upgrade-bind9.16-libsalma-upgrade-bind9.16-licensealma-upgrade-bind9.16-utilsalma-upgrade-dnsmasqalma-upgrade-dnsmasq-utilsalma-upgrade-python3-bindalma-upgrade-python3-bind9.16alma-upgrade-python3-unboundalma-upgrade-unboundalma-upgrade-unbound-develalma-upgrade-unbound-libs
References
Rapid7 Labs
2026 Global Threat Landscape Report
The predictive window has collapsed. Exploitation follows disclosure in days. See how attackers are accelerating and how to stay ahead.