OESA-2026-4754

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Source

https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2026-4754

Import Source

https://repo.openeuler.org/security/data/osv/OESA-2026-4754.json

JSON Data

https://api.osv.dev/v1/vulns/OESA-2026-4754

Upstream

CVE (2)

Published

2026-11-11T12:25:50Z

Modified

2026-11-11T12:45:05Z

Severity

7.0 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator

Summary

rsync security update

Details

Rsync is an open source utility that provides fast incremental file transfer. It uses the "rsync algorithm" which provides a very fast method for bringing remote files into sync. It does this by sending just the differences in the files across the link, without requiring that both sets of files are present at one of the ends of the link beforehand.

Security Fix(es):

Rsync versions before 3.4.3 contain a time-of-check to time-of-use (TOCTOU) race condition in daemon file handling that allows attackers to redirect file writes outside intended directories by replacing parent directory components with symbolic links. Attackers with write access to a module path can exploit this race condition to create or overwrite arbitrary files, potentially modifying sensitive system files and achieving privilege escalation when the daemon runs with elevated privileges. This vulnerability can only be triggered if the chroot setting is false.(CVE-2026-29518)

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)

Database specific

{
    "severity": "High"
}

References

Affected packages

openEuler:24.03-LTS-SP4 / rsync

Package

Name: rsync
Purl: pkg:rpm/openEuler/rsync&distro=openEuler-24.03-LTS-SP4

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Fixed

3.2.7-13.oe2403sp4

Ecosystem specific

{
    "aarch64": [
        "rsync-3.2.7-13.oe2403sp4.aarch64.rpm",
        "rsync-debuginfo-3.2.7-13.oe2403sp4.aarch64.rpm",
        "rsync-debugsource-3.2.7-13.oe2403sp4.aarch64.rpm",
        "rsync-help-3.2.7-13.oe2403sp4.aarch64.rpm"
    ],
    "src": [
        "rsync-3.2.7-13.oe2403sp4.src.rpm"
    ],
    "x86_64": [
        "rsync-3.2.7-13.oe2403sp4.x86_64.rpm",
        "rsync-debuginfo-3.2.7-13.oe2403sp4.x86_64.rpm",
        "rsync-debugsource-3.2.7-13.oe2403sp4.x86_64.rpm",
        "rsync-help-3.2.7-13.oe2403sp4.x86_64.rpm"
    ]
}

Database specific

source

"https://repo.openeuler.org/security/data/osv/OESA-2026-4754.json"