Reachable assertion in ISC BIND - CVE-2025-13878

Vulnerability identifier: #VU121952

CSH Severity: Medium

CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2025-13878

CWE-ID: CWE-617

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a reachable assertion when handling BRID/HHIT records. A remote attacker can send a specially crafted DNS request to the server and perform a denial of service attack.

ISC BIND
Debian Linux
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Desktop 15
SUSE Linux Enterprise Real Time 15
Server Applications Module
Basesystem Module
Fedora
LANTIME Operating System Firmware (LTOS)
bind
bind9 (Debian package)
bind-debugsource
bind-debuginfo
bind-doc
bind-utils
bind-utils-debuginfo
bind-dyndb-ldap

Install updates from vendor's website.

ISC BIND - addressed in versions 9.18.44, 9.18.44-S1, 9.20.18, 9.20.18-S1, 9.21.17
LANTIME Operating System Firmware (LTOS) - update to 7.10.008
bind - update to 9.18.44-1.fc42
bind9 (Debian package) - addressed in versions 1:9.18.44-1~deb12u1, 1:9.20.18-1~deb13u1
bind - update to 9.20.18-150700.3.15.1
bind-debugsource - update to 9.20.18-150700.3.15.1
bind-debuginfo - update to 9.20.18-150700.3.15.1
bind-doc - update to 9.20.18-150700.3.15.1
bind-utils - update to 9.20.18-150700.3.15.1
bind-utils-debuginfo - update to 9.20.18-150700.3.15.1
bind-dyndb-ldap - update to 11.11-9.fc42

• https://kb.isc.org/docs/cve-2025-13878

• Remote denial of service in ISC BIND
• Debian update for bind9
• Fedora 42 update for bind, bind-dyndb-ldap
• SUSE update for bind
• Meinberg LANTIME firmware update for third-party components