FreeBSD : ner/rsync -- multiple vulnerabilities (ecca89eb-54e6-11f1-bc4a-40b034429ecf)

medium Nessus Plugin ID 316538

Synopsis

The remote FreeBSD host is missing one or more security-related updates.

Description

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the ecca89eb-54e6-11f1-bc4a-40b034429ecf advisory.

The rsync project reports:
Six CVEs are fixed in this release. All six are assigned by VulnCheck as CNA.
Affected versions are 3.4.2 and earlier in every case.
In addition to the six CVE fixes, this release adds defence-in-depth hardening on several adjacent paths: bounded wire-supplied counts and lengths in flist/io/acls/xattrs, a guard against length underflow in cumulative snprintf() callers, a parent block-index bounds check on the receiver, a NULL check in read_delay_line(), a lower ceiling on MAX_WIRE_DEL_STAT to avoid signed-int overflow in the read_del_stats() accumulator, rejection of hyphen-prefixed remote-shell hostnames (defence-in-depth against argv-injection in tooling that forwards untrusted input into the hostspec position; reported by Aisle Research via Michal Ruprich), and a NULL-check on localtime_r() in timestring() to keep a malicious server from crashing the client by advertising a file with an out-of-range modtime.

Tenable has extracted the preceding description block directly from the FreeBSD security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

Plugin Details

Severity: Medium

ID: 316538

File Name: freebsd_pkg_ecca89eb54e611f1bc4a40b034429ecf.nasl

Version: 1.1

Type: Local

Family: FreeBSD Local Security Checks

Published: 5/22/2026

Updated: 5/22/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: High

Score: 7.7

CVSS v2

Risk Factor: High

Base Score: 8.5

Temporal Score: 6.3

Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:N/A:C

CVSS Score Source: CVE-2026-43618

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 4.8

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

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

CVSS Score Source: CVE-2026-43620

CVSS v4

Risk Factor: Medium

Base Score: 6.9

Threat Score: 4.6

Threat Vector: CVSS:4.0/E:U

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

CVSS Score Source: CVE-2026-43620

Vulnerability Information

CPE: p-cpe:/a:freebsd:freebsd:rsync, cpe:/o:freebsd:freebsd

Required KB Items: Host/local_checks_enabled, Host/FreeBSD/release, Host/FreeBSD/pkg_info

Exploit Ease: No known exploits are available

Patch Publication Date: 5/21/2026

Vulnerability Publication Date: 5/20/2026

Reference Information

CVE: CVE-2026-29518, CVE-2026-43617, CVE-2026-43618, CVE-2026-43619, CVE-2026-43620, CVE-2026-45232

IAVA: 2026-A-0502

Detections

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