Fedora 38 : rdiff-backup (2023-0fb94a1209)

high Nessus Plugin ID 187065



The remote Fedora host is missing one or more security updates.


The remote Fedora 38 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2023-0fb94a1209 advisory.

- PyInstaller bundles a Python application and all its dependencies into a single package. A PyInstaller built application, elevated as a privileged process, may be tricked by an unprivileged attacker into deleting files the unprivileged user does not otherwise have access to. A user is affected if **all** the following are satisfied: 1. The user runs an application containing either `matplotlib` or `win32com`. 2.
The application is ran as administrator (or at least a user with higher privileges than the attacker). 3.
The user's temporary directory is not locked to that specific user (most likely due to `TMP`/`TEMP` environment variables pointing to an unprotected, arbitrary, non default location). Either: A. The attacker is able to very carefully time the replacement of a temporary file with a symlink. This switch must occur exactly between `shutil.rmtree()`'s builtin symlink check and the deletion itself B: The application was built with Python 3.7.x or earlier which has no protection against Directory Junctions links. The vulnerability has been addressed in PR #7827 which corresponds to `pyinstaller >= 5.13.1`.
Users are advised to upgrade. There are no known workarounds for this vulnerability. (CVE-2023-49797)

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


Update the affected rdiff-backup package.

See Also


Plugin Details

Severity: High

ID: 187065

File Name: fedora_2023-0fb94a1209.nasl

Version: 1.1

Type: local

Agent: unix

Published: 12/18/2023

Updated: 12/21/2023

Supported Sensors: Agentless Assessment, Frictionless Assessment Agent, Nessus Agent, Nessus

Risk Information


Risk Factor: Medium

Score: 6.7


Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

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

CVSS Score Source: CVE-2023-49797


Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

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

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

Vulnerability Information

CPE: p-cpe:/a:fedoraproject:fedora:rdiff-backup, cpe:/o:fedoraproject:fedora:38

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 12/10/2023

Vulnerability Publication Date: 12/9/2023

Reference Information

CVE: CVE-2023-49797