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

medium Tenable Self-Hosted Container Security Plugin ID 464473

Description

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

 - For a secondary zone with transfers restricted by TSIG, `named` may start to serve the data provided in a
 zone transfer before the final message with the TSIG signature arrives. This could allow an attacker that
 does not actually possess a valid TSIG signature to send unauthorized zone contents to a secondary server.
 Although no TSIG signature ever arrives, `named` does not rollback to the pre-transfer state. To exploit
 the vulnerability, the transfer must be a multi-message TCP IXFR, as described by RFC 8945. 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-2026-19033)

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-2026-19033

Plugin Details

Severity: Medium

ID: 464473

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Medium

Score: 6.2

Percentile: 96.33

CVSS v2

Risk Factor: Medium

Base Score: 6.1

Temporal Score: 4.5

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

CVSS Score Source: CVE-2026-19033

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

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

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-2026-19033

IAVA: 2026-A-1029