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NewStart CGSL CORE 5.04 / MAIN 5.04 : dnsmasq Multiple Vulnerabilities (NS-SA-2024-0011)

medium Nessus Plugin ID 193540

Synopsis

The remote NewStart CGSL host is affected by multiple vulnerabilities.

Description

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.

Solution

Upgrade the vulnerable CGSL dnsmasq packages. Note that updated packages may not be available yet. Please contact ZTE for more information.

See Also

https://security.gd-linux.com/notice/NS-SA-2024-0011

https://security.gd-linux.com/info/CVE-2008-1447

https://security.gd-linux.com/info/CVE-2009-2957

https://security.gd-linux.com/info/CVE-2009-2958

https://security.gd-linux.com/info/CVE-2013-0198

https://security.gd-linux.com/info/CVE-2020-25684

https://security.gd-linux.com/info/CVE-2020-25685

https://security.gd-linux.com/info/CVE-2020-25686

https://security.gd-linux.com/info/CVE-2023-28450

Plugin Details

Severity: Medium

ID: 193540

File Name: newstart_cgsl_NS-SA-2024-0011_dnsmasq.nasl

Version: 1.1

Type: local

Published: 4/18/2024

Updated: 4/19/2024

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.3

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P

CVSS Score Source: CVE-2009-2957

CVSS v3

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 6.1

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:N

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

CVSS Score Source: CVE-2008-1447

Vulnerability Information

CPE: p-cpe:/a:zte:cgsl_core:dnsmasq, p-cpe:/a:zte:cgsl_core:dnsmasq-debuginfo, p-cpe:/a:zte:cgsl_core:dnsmasq-utils, p-cpe:/a:zte:cgsl_main:dnsmasq, p-cpe:/a:zte:cgsl_main:dnsmasq-debuginfo, p-cpe:/a:zte:cgsl_main:dnsmasq-utils, cpe:/o:zte:cgsl_core:5, cpe:/o:zte:cgsl_main:5

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/ZTE-CGSL/release, Host/ZTE-CGSL/rpm-list

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 4/12/2024

Vulnerability Publication Date: 7/6/2008

Reference Information

CVE: CVE-2008-1447, CVE-2009-2957, CVE-2009-2958, CVE-2013-0198, CVE-2020-25684, CVE-2020-25685, CVE-2020-25686, CVE-2023-28450

IAVA: 2021-A-0041