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OVAL Definitions
>
OVAL Definition Details
Id
oval:ru.altx-soft.nix:def:146339
[Eng]
Version
10
Class
vulnerability
ALTXid
345787
Language
Russian
Severity
Medium
Title
Red Hat/CentOS -- уязвимость в Red Hat Virtualization Host security, dnsmasq, RHV-H (CVE-2020-25686)
Description
В продуктах Red Hat Virtualization Host security, dnsmasq, RHV-H обнаружена уязвимость CVE-2020-25686.
Family
unix
Platform
CentOS Linux 7
CentOS Linux 8
Red Hat Enterprise Linux 7
Red Hat Enterprise Linux 7.2
Red Hat Enterprise Linux 7.3
Red Hat Enterprise Linux 7.4
Red Hat Enterprise Linux 7.6
Red Hat Enterprise Linux 7.7
Red Hat Enterprise Linux 8
Red Hat Enterprise Linux 8.1
Red Hat Enterprise Linux 8.2
Product
dnsmasq
Red Hat Virtualization Host security
RHV-H
Reference
VENDOR: RHSA-2021:0401
VENDOR: RHSA-2021:0401
Id:
RHSA-2021:0401
Reference:
https://access.redhat.com/errata/RHSA-2021:0401
VENDOR: RHSA-2021:0395
VENDOR: RHSA-2021:0395
Id:
RHSA-2021:0395
Reference:
https://access.redhat.com/errata/RHSA-2021:0395
FSTEC: BDU:2021-03619
FSTEC: BDU:2021-03619
Id:
BDU:2021-03619
Reference:
https://bdu.fstec.ru/vul/2021-03619
CESA-2021:0153: CESA-2021:0153
CESA-2021:0153: CESA-2021:0153
Id:
CESA-2021:0153
Reference:
http://lists.centos.org/pipermail/centos-announce/2021-January/048251.html
VENDOR: RHSA-2021:0240
VENDOR: RHSA-2021:0240
Id:
RHSA-2021:0240
Reference:
https://access.redhat.com/errata/RHSA-2021:0240
VENDOR: RHSA-2021:0245
VENDOR: RHSA-2021:0245
Id:
RHSA-2021:0245
Reference:
https://access.redhat.com/errata/RHSA-2021:0245
CVE: CVE-2020-25686
CVE: CVE-2020-25686
Id:
CVE-2020-25686
Reference:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-25686
Comment
: 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.
CVSSv2 Score:
4.3
Access vector:
NETWORK
Access complexity:
MEDIUM
Authentication:
NONE
Confidentiality impact:
NONE
Integrity impact:
PARTIAL
Availability impact:
NONE
CVSSv2 Vector:
AV:N/AC:M/Au:N/C:N/I:P/A:N
CVSSv3 Score:
3.7
Attack vector:
NETWORK
Attack complexity:
HIGH
Privileges required:
NONE
User interaction:
NONE
Scope:
UNCHANGED
Confidentiality impact:
NONE
Integrity impact:
LOW
Availability impact:
NONE
CVSSv3 Vector:
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
CWE:
358 (Improperly Implemented Security Check for Standard)
References:
https://www.jsof-tech.com/disclosures/dnspooq/ (MISC)
https://bugzilla.redhat.com/show_bug.cgi?id=1890125 (MISC)
GLSA-202101-17 (GENTOO)
DSA-4844 (DEBIAN)
https://www.arista.com/en/support/advisories-notices/security-advisories/12135-security-advisory-61 (MISC)
FEDORA-2021-84440e87ba ()
FEDORA-2021-2e4c3d5a9d ()
VENDOR: RHSA-2021:0153
VENDOR: RHSA-2021:0153
Id:
RHSA-2021:0153
Reference:
https://access.redhat.com/errata/RHSA-2021:0153
VENDOR: RHSA-2021:0155
VENDOR: RHSA-2021:0155
Id:
RHSA-2021:0155
Reference:
https://access.redhat.com/errata/RHSA-2021:0155
VENDOR: RHSA-2021:0156
VENDOR: RHSA-2021:0156
Id:
RHSA-2021:0156
Reference:
https://access.redhat.com/errata/RHSA-2021:0156
VENDOR: RHSA-2021:0150
VENDOR: RHSA-2021:0150
Id:
RHSA-2021:0150
Reference:
https://access.redhat.com/errata/RHSA-2021:0150
VENDOR: RHSA-2021:0152
VENDOR: RHSA-2021:0152
Id:
RHSA-2021:0152
Reference:
https://access.redhat.com/errata/RHSA-2021:0152
VENDOR: RHSA-2021:0151
VENDOR: RHSA-2021:0151
Id:
RHSA-2021:0151
Reference:
https://access.redhat.com/errata/RHSA-2021:0151
VENDOR: RHSA-2021:0154
VENDOR: RHSA-2021:0154
Id:
RHSA-2021:0154
Reference:
https://access.redhat.com/errata/RHSA-2021:0154
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