RHEL 7 : dnsmasq (RHSA-2021:0155)
low Nessus Plugin ID 145085
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Synopsis
The remote Red Hat host is missing one or more security updates.Description
The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2021:0155 advisory.- dnsmasq: loose address/port check in reply_query() makes forging replies easier for an off-path attacker (CVE-2020-25684)
- dnsmasq: loose query name check in reply_query() makes forging replies easier for an off-path attacker (CVE-2020-25685)
- dnsmasq: multiple queries forwarded for the same name makes forging replies easier for an off-path attacker (CVE-2020-25686)
Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.
Solution
Update the affected dnsmasq and / or dnsmasq-utils packages.See Also
https://cwe.mitre.org/data/definitions/290.html
https://cwe.mitre.org/data/definitions/358.html
https://access.redhat.com/security/cve/CVE-2020-25684
https://access.redhat.com/security/cve/CVE-2020-25685
https://access.redhat.com/security/cve/CVE-2020-25686
https://access.redhat.com/errata/RHSA-2021:0155
https://bugzilla.redhat.com/1889686
Plugin Details
Severity: Low
ID: 145085
File Name: redhat-RHSA-2021-0155.nasl
Version: 1.7
Type: local
Agent: unix
Family: Red Hat Local Security Checks
Published: 1/19/2021
Updated: 10/7/2021
Supported Sensors: Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent
Risk Information
VPR
Risk Factor: Low
Score: 2.9
CVSS v2
Risk Factor: Medium
Base Score: 4.3
Temporal Score: 3.2
Vector: AV:N/AC:M/Au:N/C:N/I:P/A:N
Temporal Vector: E:U/RL:OF/RC:C
CVSS Score Source: CVE-2020-25686
CVSS v3
Risk Factor: Low
Base Score: 3.7
Temporal Score: 3.2
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
Temporal Vector: E:U/RL:O/RC:C
Vulnerability Information
CPE: cpe:/o:redhat:rhel_aus:7.6, cpe:/o:redhat:rhel_e4s:7.6, cpe:/o:redhat:rhel_eus:7.6, cpe:/o:redhat:rhel_tus:7.6, p-cpe:/a:redhat:enterprise_linux:dnsmasq, p-cpe:/a:redhat:enterprise_linux:dnsmasq-utils
Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu
Exploit Ease: No known exploits are available
Patch Publication Date: 1/19/2021
Vulnerability Publication Date: 1/19/2021