The remote host is affected by the vulnerability described in GLSA-202412-10 (Dnsmasq: Multiple Vulnerabilities)

    Multiple vulnerabilities have been discovered in Dnsmasq. Please review the CVE identifiers referenced     below for details.

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

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

The remote NewStart CGSL host, running version CORE 5.04 / MAIN 5.04, has dnsmasq packages installed that are affected by multiple vulnerabilities:

  - The DNS protocol, as implemented in (1) BIND 8 and 9 before 9.5.0-P1, 9.4.2-P1, and 9.3.5-P1; (2)     Microsoft DNS in Windows 2000 SP4, XP SP2 and SP3, and Server 2003 SP1 and SP2; and other implementations     allow remote attackers to spoof DNS traffic via a birthday attack that uses in-bailiwick referrals to     conduct cache poisoning against recursive resolvers, related to insufficient randomness of DNS transaction     IDs and source ports, aka DNS Insufficient Socket Entropy Vulnerability or the Kaminsky bug.
    (CVE-2008-1447)

  - Heap-based buffer overflow in the tftp_request function in tftp.c in dnsmasq before 2.50, when --enable-     tftp is used, might allow remote attackers to execute arbitrary code via a long filename in a TFTP packet,     as demonstrated by a read (aka RRQ) request. (CVE-2009-2957)

  - The tftp_request function in tftp.c in dnsmasq before 2.50, when --enable-tftp is used, allows remote     attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a TFTP read (aka     RRQ) request with a malformed blksize option. (CVE-2009-2958)

  - Dnsmasq before 2.66test2, when used with certain libvirt configurations, replies to queries from     prohibited interfaces, which allows remote attackers to cause a denial of service (traffic amplification)     via spoofed TCP based DNS queries. NOTE: this vulnerability exists because of an incomplete fix for     CVE-2012-3411. (CVE-2013-0198)

  - A flaw was found in dnsmasq before version 2.83. When getting a reply from a forwarded query, dnsmasq     checks in the forward.c:reply_query() if the reply destination address/port is used by the pending     forwarded queries. However, it does not use the address/port to retrieve the exact forwarded query,     substantially reducing the number of attempts an attacker on the network would have to perform to forge a     reply and get it accepted by dnsmasq. This issue contrasts with RFC5452, which specifies a query's     attributes that all must be used to match a reply. This flaw allows an attacker to perform a DNS Cache     Poisoning attack. If chained with CVE-2020-25685 or CVE-2020-25686, the attack complexity of a successful     attack is reduced. The highest threat from this vulnerability is to data integrity. (CVE-2020-25684)

  - A flaw was found in dnsmasq before version 2.83. When getting a reply from a forwarded query, dnsmasq     checks in forward.c:reply_query(), which is the forwarded query that matches the reply, by only using a     weak hash of the query name. Due to the weak hash (CRC32 when dnsmasq is compiled without DNSSEC, SHA-1     when it is) this flaw allows an off-path attacker to find several different domains all having the same     hash, substantially reducing the number of attempts they would have to perform to forge a reply and get it     accepted by dnsmasq. This is in contrast with RFC5452, which specifies that the query name is one of the     attributes of a query that must be used to match a reply. This flaw could be abused to perform a DNS Cache     Poisoning attack. If chained with CVE-2020-25684 the attack complexity of a successful attack is reduced.
    The highest threat from this vulnerability is to data integrity. (CVE-2020-25685)

  - A flaw was found in dnsmasq before version 2.83. When receiving a query, dnsmasq does not check for an     existing pending request for the same name and forwards a new request. By default, a maximum of 150     pending queries can be sent to upstream servers, so there can be at most 150 queries for the same name.
    This flaw allows an off-path attacker on the network to substantially reduce the number of attempts that     it would have to perform to forge a reply and have it accepted by dnsmasq. This issue is mentioned in the     Birthday Attacks section of RFC5452. If chained with CVE-2020-25684, the attack complexity of a     successful attack is reduced. The highest threat from this vulnerability is to data integrity.
    (CVE-2020-25686)

  - 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-2023-28450)

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

According to the versions of the dnsmasq package installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - 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-2023-28450)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

According to the versions of the dnsmasq packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - 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-2023-28450)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2023:7046 advisory.

    The dnsmasq packages contain Dnsmasq, a lightweight DNS (Domain Name Server) forwarder and DHCP (Dynamic     Host Configuration Protocol) server.

    Security Fix(es):

    * dnsmasq: default maximum EDNS.0 UDP packet size was set to 4096 but should be 1232 (CVE-2023-28450)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

    Additional Changes:

    For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.9 Release Notes     linked from the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

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

An update of the dnsmasq package has been released.

The version of Tencent Linux installed on the remote TencentOS Server 4 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the TSSA-2024:0362 advisory.

    Package updates are available for TencentOS Server 4 that fix the following vulnerabilities:

    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.

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

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

The remote MiracleLinux 9 host has packages installed that are affected by a vulnerability as referenced in the AXSA:2023-6726:06 advisory.

    * dnsmasq: default maximum EDNS.0 UDP packet size was set to 4096 but should be 1232 (CVE-2023-28450)

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

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

The remote MiracleLinux 8 host has packages installed that are affected by a vulnerability as referenced in the AXSA:2023-7092:07 advisory.

    * dnsmasq: default maximum EDNS.0 UDP packet size was set to 4096 but should be 1232 (CVE-2023-28450)

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

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

The remote Ubuntu 16.04 LTS / 18.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-6657-2 advisory.

    USN-6657-1 fixed several vulnerabilities in Dnsmasq. This update provides the corresponding update for     Ubuntu 16.04 LTS and Ubuntu 18.04 LTS.



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

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

The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 / openSUSE 15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2025:0071-1 advisory.

    - Version update to 2.90:
    - CVE-2023-50387: Fixed a Denial Of Service while trying to validate specially crafted DNSSEC responses.
    (bsc#1219823)
    - CVE-2023-50868: Fixed a Denial Of Service while trying to validate specially crafted DNSSEC responses.
    (bsc#1219826)
    - CVE-2023-28450: Default maximum EDNS.0 UDP packet size should be 1232. (bsc#1209358)

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

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

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
212191	GLSA-202412-10 : Dnsmasq: Multiple Vulnerabilities	Nessus	Gentoo Local Security Checks	2024/12/9	2025/12/24	high
193540	NewStart CGSL CORE 5.04 / MAIN 5.04 : dnsmasq Multiple Vulnerabilities (NS-SA-2024-0011)	Nessus	NewStart CGSL Local Security Checks	2024/4/18	2024/4/19	medium
175311	EulerOS 2.0 SP10 : dnsmasq (EulerOS-SA-2023-1799)	Nessus	Huawei Local Security Checks	2023/5/9	2023/5/9	high
175502	EulerOS 2.0 SP9 : dnsmasq (EulerOS-SA-2023-1863)	Nessus	Huawei Local Security Checks	2023/5/13	2023/5/13	high
177002	EulerOS 2.0 SP8 : dnsmasq (EulerOS-SA-2023-2189)	Nessus	Huawei Local Security Checks	2023/6/9	2023/6/9	high
185654	RHEL 8 : dnsmasq (RHSA-2023:7046)	Nessus	Red Hat Local Security Checks	2023/11/14	2024/11/7	high
204402	Photon OS 5.0: Dnsmasq PHSA-2023-5.0-0041	Nessus	PhotonOS Local Security Checks	2024/7/24	2024/7/24	high
239453	TencentOS Server 4: dnsmasq (TSSA-2024:0362)	Nessus	Tencent Local Security Checks	2025/6/16	2025/11/20	high
293218	MiracleLinux 9 : dnsmasq-2.85-14.el9 (AXSA:2023-6726:06)	Nessus	Miracle Linux Local Security Checks	2026/1/20	2026/1/20	high
293605	MiracleLinux 8 : dnsmasq-2.79-31.el8 (AXSA:2023-7092:07)	Nessus	Miracle Linux Local Security Checks	2026/1/20	2026/1/20	high
193872	Ubuntu 16.04 LTS / 18.04 LTS : Dnsmasq vulnerabilities (USN-6657-2)	Nessus	Ubuntu Local Security Checks	2024/4/25	2025/12/24	high
213970	SUSE SLED15 / SLES15 / openSUSE 15 Security Update : dnsmasq (SUSE-SU-2025:0071-1)	Nessus	SuSE Local Security Checks	2025/1/11	2025/12/24	high

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