CVE-2023-33285
NixOS vulnerability analysis and mitigation

Overview

A vulnerability identified as CVE-2023-33285 was discovered in Qt versions 5.x before 5.15.14, 6.x before 6.2.9, and 6.3.x through 6.5.x before 6.5.1. The vulnerability was discovered in May 2023 and affects the QDnsLookup component (NVD, CVE).

Technical details

The vulnerability is classified as a buffer over-read vulnerability in the QDnsLookup component that can be triggered via a crafted reply from a DNS server. The severity is rated as MEDIUM with a CVSS 3.1 Base Score of 5.3 (Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L). The vulnerability has been categorized under CWE-125 (Out-of-bounds Read) (NVD).

Impact

The vulnerability can lead to a buffer over-read condition when processing crafted DNS server replies, potentially causing application crashes or denial of service conditions (Debian LTS).

Mitigation and workarounds

The vulnerability has been fixed in Qt versions 5.15.14, 6.2.9, and 6.5.1. Users are advised to upgrade to these or later versions. Various Linux distributions have also released security updates to address this vulnerability (Debian LTS).

Additional resources


SourceThis report was generated using AI

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