Detections
Analytics

Echo: bind9: security update to 1:9.20.29-1~deb13u1

medium Tenable Cloud Security Plugin ID 459903

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - A malformed zone may contain an NS or DNAME node above its origin, which `named` treats as a zone cut. If
 an attacker inserts a malformed zone into a BIND authoritative server (e.g., via zone transfer), queries
 for names inside the configured zone then lose authoritative status and return an out-of-zone delegation.
 On a server that also provides recursion BIND can follow this locally sourced cut and cache attacker-
 supplied data, affecting names outside the configured zone. This situation persists as long as the
 malformed zone remains in the zone database. This issue affects BIND 9 versions 9.11.0 through 9.18.50,
 9.20.0 through 9.20.27, 9.21.0 through 9.21.25, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through
 9.20.27-S1. (CVE-2026-78301)

Solution

Update the bind9 library and its related packages to version 1:9.20.29-1~deb13u1 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-78301

Plugin Details

Severity: Medium

ID: 459903

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Medium

Score: 5.3

Percentile: 95.71

CVSS v2

Risk Factor: Medium

Base Score: 4.6

Temporal Score: 3.4

Vector: CVSS2#AV:N/AC:H/Au:M/C:N/I:C/A:N

CVSS Score Source: CVE-2026-78301

CVSS v3

Risk Factor: Medium

Base Score: 5.8

Temporal Score: 5.1

Vector: CVSS:3.0/AV:N/AC:H/PR:H/UI:N/S:C/C:N/I:H/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 9/16/2026

Vulnerability Publication Date: 9/16/2026

Reference Information

CVE: CVE-2026-78301

IAVA: 2026-A-1029