Detections
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Echo: rsync: security update to 3.4.1+ds1-5+deb13u3

medium Tenable Self-Hosted Container Security Plugin ID 457999

Description

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

 - Rsync version 3.4.2 and prior contain an authorization bypass vulnerability in the rsync daemon's
 hostname-based access control list enforcement when configured with chroot. Attackers can bypass hostname-
 based deny rules by controlling the PTR record for their source IP address, allowing connections from
 hostnames that administrators intended to deny when reverse DNS resolution fails and defaults to UNKNOWN.
 (CVE-2026-43617)

Solution

Update the rsync library and its related packages to version 3.4.1+ds1-5+deb13u3 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-43617

Plugin Details

Severity: Medium

ID: 457999

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Low

Score: 2.1

Percentile: 7.71

CVSS v2

Risk Factor: Medium

Base Score: 4

Temporal Score: 3

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

CVSS Score Source: CVE-2026-43617

CVSS v3

Risk Factor: Medium

Base Score: 4.8

Temporal Score: 4.2

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

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

CVSS v4

Risk Factor: Medium

Base Score: 6.3

Threat Score: 1.7

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 5/20/2026

Vulnerability Publication Date: 5/20/2026

Reference Information

CVE: CVE-2026-43617

IAVA: 2026-A-0502