The remote Debian 11 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-3974 advisory.

    -lts-announce@lists.debian.org     Subject: [SECURITY] [DLA 3974-1] dnsmasq security update

    - -------------------------------------------------------------------------     Debian LTS Advisory DLA-3974-1                debian-lts@lists.debian.org     https://www.debian.org/lts/security/                          Lee Garrett     November 29, 2024                             https://wiki.debian.org/LTS
    - -------------------------------------------------------------------------

    Package        : dnsmasq     Version        : 2.85-1+deb11u1     CVE ID         : CVE-2022-0934 CVE-2023-28450 CVE-2023-50387 CVE-2023-50868     Debian Bug     :

    Brief introduction

    CVE-2022-0934

        A single-byte, non-arbitrary write/use-after-free flaw was found in dnsmasq.
        This flaw allows an attacker who sends a crafted packet processed by         dnsmasq, potentially causing a denial of service.

    CVE-2023-28450

        An issue was discovered in Dnsmasq before 2.90. The default maximum EDNS.0         UDP packet size was set to 4096 but should be 1232 because of DNS Flag Day         2020.

    CVE-2023-50387

        Certain DNSSEC aspects of the DNS protocol (in RFC 4033, 4034, 4035, 6840,         and related RFCs) allow remote attackers to cause a denial of service (CPU         consumption) via one or more DNSSEC responses, aka the KeyTrap issue. One         of the concerns is that, when there is a zone with many DNSKEY and RRSIG         records, the protocol specification implies that an algorithm must evaluate         all combinations of DNSKEY and RRSIG records.

    CVE-2023-50868

        The Closest Encloser Proof aspect of the DNS protocol (in RFC 5155 when RFC         9276 guidance is skipped) allows remote attackers to cause a denial of         service (CPU consumption for SHA-1 computations) via DNSSEC responses in a         random subdomain attack, aka the NSEC3 issue. The RFC 5155 specification         implies that an algorithm must perform thousands of iterations of a hash         function in certain situations.

    For Debian 11 bullseye, these problems have been fixed in version     2.85-1+deb11u1.

    We recommend that you upgrade your dnsmasq packages.

    For the detailed security status of dnsmasq please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/dnsmasq

    Further information about Debian LTS security advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://wiki.debian.org/LTS

Tenable has extracted the preceding description block directly from the Debian security advisory.

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

Detections

Analytics

Debian dla-3974 : dnsmasq - security update

high Nessus Plugin ID 211973

Version 1.1