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AlmaLinux 8 : rsync (ALSA-2026:74095)
critical Nessus Plugin ID 362406
Synopsis
The remote AlmaLinux host is missing one or more security updates.Description
The remote AlmaLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:74095 advisory.* rsync: rsync 2.3.3 < 3.5.0 Path Traversal via --partial-dir/--backup-dir Symlink (CVE-2026-70460)
* rsync: rsync: Arbitrary file deletion via malicious file list (CVE-2026-53789)
* rsync: rsync < 3.5.0 Command Injection via Multiple Code Paths (CVE-2026-53790)
* rsync: rsync: Memory corruption via crafted file entries (CVE-2026-70458)
* rsync: rsync: Denial of Service via handshake stall (CVE-2026-70464)
* rsync: rsync: Local Privilege Escalation via Symlink Following (CVE-2026-53803)
* rsync: rsync: Unauthorized File Access via Symlink Module Root (CVE-2026-53784)
* rsync: rsync: Authorization bypass via `auth users` directive parsing (CVE-2026-70463)
* rsync: rsync 3.1.0 < 3.5.0 Access Control Bypass via DNS Resolution Failure (CVE-2026-70452)
* rsync: rsync: Arbitrary file write via --temp-dir or --link-dest options (CVE-2026-53795)
* rsync: rsync: Heap Out-of-Bounds Write via crafted argument list (CVE-2026-70456)
* rsync: rsync < 3.5.0 Path Confinement Bypass via /./ Boundary Marker in Chroot Mode (CVE-2026-53793)
* rsync: rsync: Denial of Service via Algorithmic Complexity (CVE-2026-70453)
* rsync: rsync: Information disclosure and denial of service via crafted files-from entry (CVE-2026-70461)
* rsync: rsync: Arbitrary File Read via Symlink Following (CVE-2026-53802)
* rsync: rsync: Arbitrary file write via path traversal in --relative mode (CVE-2026-53785)
* rsync: rsync: Directory escape via TOCTOU race condition in rrsync (CVE-2026-53783)
Bug Fix(es) and Enhancement(s):
* Fix latest CVEs in rsync in AlmaLinux8 (JIRA:AlmaLinux-256903)
* rsync-3.1.3-27.el8_10 regression: rsync daemon rejects legitimate cross-device symlinks with EXDEV when use chroot = no (JIRA:AlmaLinux-239553)
Tenable has extracted the preceding description block directly from the AlmaLinux 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 rsync and / or rsync-daemon packages.See Also
Plugin Details
Severity: Critical
ID: 362406
File Name: alma_linux_ALSA-2026-74095.nasl
Version: 1.1
Type: Local
Family: Alma Linux Local Security Checks
Published: 10/1/2026
Updated: 10/1/2026
Supported Sensors: Nessus Agent, Continuous Assessment, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 4.9
Percentile: 58.18
CVSS v2
Risk Factor: High
Base Score: 9.4
Temporal Score: 7.4
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:C/A:C
CVSS Score Source: CVE-2026-53789
CVSS v3
Risk Factor: High
Base Score: 8.1
Temporal Score: 7.3
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H
Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C
CVSS v4
Risk Factor: Critical
Base Score: 9.2
Threat Score: 8.2
Threat Vector: CVSS:4.0/E:P
Vector: CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CVSS Score Source: CVE-2026-70460
Vulnerability Information
CPE: cpe:/o:alma:linux:8, cpe:/o:alma:linux:8::appstream, cpe:/o:alma:linux:8::baseos, cpe:/o:alma:linux:8::highavailability, cpe:/o:alma:linux:8::nfv, cpe:/o:alma:linux:8::powertools, cpe:/o:alma:linux:8::realtime, cpe:/o:alma:linux:8::resilientstorage, cpe:/o:alma:linux:8::sap, cpe:/o:alma:linux:8::sap_hana, cpe:/o:alma:linux:8::supplementary, p-cpe:/a:alma:linux:rsync-daemon, p-cpe:/a:alma:linux:rsync
Required KB Items: Host/local_checks_enabled, Host/cpu, Host/AlmaLinux/release, Host/AlmaLinux/rpm-list
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 9/30/2026
Vulnerability Publication Date: 8/13/2026
Reference Information
CVE: CVE-2026-53783, CVE-2026-53784, CVE-2026-53785, CVE-2026-53789, CVE-2026-53790, CVE-2026-53793, CVE-2026-53795, CVE-2026-53802, CVE-2026-53803, CVE-2026-70452, CVE-2026-70453, CVE-2026-70456, CVE-2026-70458, CVE-2026-70460, CVE-2026-70461, CVE-2026-70463, CVE-2026-70464