A security warning issued for PowerDNS has received an update from the BSI. You can find out how affected users should behave here.
The Federal Office for Security in Information Technology (BSI) reported a security advisory for PowerDNS on April 24, 2024. The security vulnerability affects the UNIX operating system as well as the products Debian Linux and open source PowerDNS. This alert was last updated on April 25, 2024.
The latest manufacturer recommendations regarding updates, workarounds and security patches for this vulnerability can be found here: Debian Security Advisory DSA-5674 (As of April 25, 2024). Other useful links are listed later in this article.
Security warning for PowerDNS – Risk: medium
Risk level: 3 (medium)
CVSS Base Score: 7,5
CVSS Temporal Score: 6,5
Remoteangriff: Ja
The Common Vulnerability Scoring System (CVSS) is used to assess the severity of vulnerabilities in computer systems. The CVSS standard makes it possible to compare potential or actual security vulnerabilities based on various criteria in order to create a priority list for taking 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. The temporal score also takes changes over time in the danger situation into account. The risk of the vulnerability discussed here is classified as “medium” according to the CVSS with a base score of 7.5.
PowerDNS Bug: Vulnerability enables denial of service
The Domain Name Service (DNS) enables domain names to be converted into IP addresses. To prevent excessive requests, the mappings are often stored locally in a cache.
A remote, anonymous attacker could exploit a vulnerability in PowerDNS to conduct a denial of service attack.
The vulnerability was classified using the CVE (Common Vulnerabilities and Exposures) referencing system by the individual serial number CVE-2024-25583.
Systems affected by the PowerDNS security vulnerability at a glance
operating system
UNIX
Products
Debian Linux (cpe:/o:debian:debian_linux)
Open Source PowerDNS Recursor Open Source PowerDNS Recursor Open Source PowerDNS Recursor
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 new security updates are available, install them as soon as possible. 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.
Debian Security Advisory DSA-5674 vom 2024-04-25 (25.04.2024)
For more information, see:
PowerDNS Recursor Security Advisory vom 2024-04-24 (24.04.2024)
For more information, see:
Version history of this security alert
This is the 2nd version of this IT security notice for PowerDNS. This text will be updated as further updates are announced. You can read about changes or additions in this version history.
April 24, 2024 – Initial version
04/25/2024 – New updates from Debian 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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