A security warning issued for Rsync has received an update from the BSI. You can read a description of the security gap including the latest updates and information about affected operating systems and products here.
The Federal Office for Security in Information Technology (BSI) published an update on May 7th, 2024 to a security vulnerability for Rsync that became known on June 9th, 2021. The security vulnerability affects the Linux operating system as well as the products Gentoo Linux and open source Rsync.
The latest manufacturer recommendations regarding updates, workarounds and security patches for this vulnerability can be found here: Gentoo Linux Security Advisory GLSA-202405-22 (As of May 8, 2024). Other useful links are listed later in this article.
Security warning for Rsync – Risk: medium
Risk level: 3 (medium)
CVSS Base Score: 7,4
CVSS Temporal Score: 6,4
Remoteangriff: Ja
The Common Vulnerability Scoring System (CVSS) is used to assess the severity of security vulnerabilities in computer systems. The CVSS standard makes it possible to compare potential or actual security vulnerabilities based on various metrics in order to better prioritize countermeasures. The attributes “none”, “low”, “medium”, “high” and “critical” are used to determine the severity levels of a vulnerability. The Base Score evaluates the requirements for an attack (including authentication, complexity, privileges, user interaction) and its consequences. With the temporal score, framework conditions that can change over time are taken into account in the evaluation. According to the CVSS, the risk of the current vulnerability is assessed as “medium” with a base score of 7.4.
Rsync Bug: Vulnerability allows security measures to be bypassed
Rsync is a tool to synchronize files and directories.
A remote, anonymous attacker could exploit a vulnerability in Rsync to bypass security measures.
The vulnerability was classified using the CVE designation system (Common Vulnerabilities and Exposures) by the individual serial number CVE-2020-14387.
Systems affected by the Rsync vulnerability at a glance
operating system
Linux
Products
Gentoo Linux (cpe:/o:gentoo:linux)
Open Source Rsync
General measures for dealing with IT vulnerabilities
Users of the affected systems should keep them up to date. When security gaps become known, manufacturers are required to fix them as quickly as possible by developing a patch or a workaround. If security patches are available, install them promptly. For information, consult the sources listed in the next section. These often contain further information about the latest version of the software in question as well as the availability of security patches or information about workarounds. If you have any further questions or uncertainties, please contact your responsible administrator. IT security managers should regularly check the sources mentioned to see whether a new security update is available.
Sources of updates, patches and workarounds
Here you will find further links with information about bug reports, security fixes and workarounds.
Gentoo Linux Security Advisory GLSA-202405-22 vom 2024-05-08 (07.05.2024)
For more information, see:
NIST Database vom 2021-06-09 (09.06.2021)
For more information, see:
Version history of this security alert
This is the 2nd version of this IT security notice for Rsync. This text will be updated as further updates are announced. You can read about changes or additions in this version history.
June 9th, 2021 – Initial version
May 7, 2024 – New updates from Gentoo added
+++ Editorial note: This text was generated based on current BSI data and will be updated in a data-driven manner depending on the warning situation. We accept feedback and comments at [email protected]. +++
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