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.
References
Link | Resource |
---|---|
https://bugzilla.redhat.com/show_bug.cgi?id=1889686 | Issue Tracking Patch Third Party Advisory |
https://lists.debian.org/debian-lts-announce/2021/03/msg00027.html | Mailing List Third Party Advisory |
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QGB7HL3OWHTLEPSMLDGOMXQKG3KM2QME/ | |
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WYW3IR6APUSKOYKL5FT3ACTIHWHGQY32/ | |
https://security.gentoo.org/glsa/202101-17 | Third Party Advisory |
https://www.arista.com/en/support/advisories-notices/security-advisories/12135-security-advisory-61 | Third Party Advisory |
https://www.debian.org/security/2021/dsa-4844 | Third Party Advisory |
https://www.jsof-tech.com/disclosures/dnspooq/ | Third Party Advisory |
Configurations
Configuration 1 (hide)
|
Configuration 2 (hide)
|
Configuration 3 (hide)
|
Configuration 4 (hide)
|
History
07 Nov 2023, 03:20
Type | Values Removed | Values Added |
---|---|---|
References |
|
|
14 Feb 2022, 14:56
Type | Values Removed | Values Added |
---|---|---|
References | (MISC) https://www.arista.com/en/support/advisories-notices/security-advisories/12135-security-advisory-61 - Third Party Advisory | |
CPE | cpe:2.3:o:arista:eos:*:*:*:*:*:*:*:* | |
First Time |
Arista
Arista eos |
|
CWE | NVD-CWE-Other |
25 Jan 2022, 14:15
Type | Values Removed | Values Added |
---|---|---|
References |
|
26 Mar 2021, 18:38
Type | Values Removed | Values Added |
---|---|---|
CPE | cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | |
References | (MLIST) https://lists.debian.org/debian-lts-announce/2021/03/msg00027.html - Mailing List, Third Party Advisory | |
CPE | cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | |
CPE | cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | |
CPE | cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | |
References | (MLIST) https://lists.debian.org/debian-lts-announce/2021/03/msg00027.html - Mailing List, Third Party Advisory | |
CPE | cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | |
CPE | cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | |
References | (MLIST) https://lists.debian.org/debian-lts-announce/2021/03/msg00027.html - Mailing List, Third Party Advisory | |
References | (MLIST) https://lists.debian.org/debian-lts-announce/2021/03/msg00027.html - Mailing List, Third Party Advisory | |
References | (MLIST) https://lists.debian.org/debian-lts-announce/2021/03/msg00027.html - Mailing List, Third Party Advisory | |
CPE | cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | |
References | (MLIST) https://lists.debian.org/debian-lts-announce/2021/03/msg00027.html - Mailing List, Third Party Advisory | |
CPE | cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | |
References | (MLIST) https://lists.debian.org/debian-lts-announce/2021/03/msg00027.html - Mailing List, Third Party Advisory | |
CPE | cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | |
References | (MLIST) https://lists.debian.org/debian-lts-announce/2021/03/msg00027.html - Mailing List, Third Party Advisory | |
References | (MLIST) https://lists.debian.org/debian-lts-announce/2021/03/msg00027.html - Mailing List, Third Party Advisory | |
CPE | cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | |
References | (MLIST) https://lists.debian.org/debian-lts-announce/2021/03/msg00027.html - Mailing List, Third Party Advisory | |
References | (MLIST) https://lists.debian.org/debian-lts-announce/2021/03/msg00027.html - Mailing List, Third Party Advisory | |
References | (MLIST) https://lists.debian.org/debian-lts-announce/2021/03/msg00027.html - Mailing List, Third Party Advisory | |
CPE | cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | |
References | (MLIST) https://lists.debian.org/debian-lts-announce/2021/03/msg00027.html - Mailing List, Third Party Advisory | |
CPE | cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | |
References | (MLIST) https://lists.debian.org/debian-lts-announce/2021/03/msg00027.html - Mailing List, Third Party Advisory | |
CPE | cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | |
References | (MLIST) https://lists.debian.org/debian-lts-announce/2021/03/msg00027.html - Mailing List, Third Party Advisory | |
CPE | cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | |
CPE | cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* |
22 Mar 2021, 21:15
Type | Values Removed | Values Added |
---|---|---|
CPE | ||
CPE | ||
CPE | ||
References |
|
|
CPE | ||
CPE | ||
CPE | ||
CPE | ||
CPE | ||
CPE | ||
CPE | ||
CPE | ||
CPE | ||
CPE | ||
CPE |
22 Feb 2021, 18:21
Type | Values Removed | Values Added |
---|---|---|
CPE | cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* | |
References | (FEDORA) https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QGB7HL3OWHTLEPSMLDGOMXQKG3KM2QME/ - Mailing List, Third Party Advisory |
20 Feb 2021, 03:15
Type | Values Removed | Values Added |
---|---|---|
References |
|
08 Feb 2021, 22:10
Type | Values Removed | Values Added |
---|---|---|
CPE | cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* | |
References | (DEBIAN) https://www.debian.org/security/2021/dsa-4844 - Third Party Advisory |
04 Feb 2021, 16:15
Type | Values Removed | Values Added |
---|---|---|
References |
|
28 Jan 2021, 20:15
Type | Values Removed | Values Added |
---|---|---|
References | (MISC) https://bugzilla.redhat.com/show_bug.cgi?id=1889686 - Issue Tracking, Patch, Third Party Advisory | |
References | (MISC) https://www.jsof-tech.com/disclosures/dnspooq/ - Third Party Advisory | |
References | (FEDORA) https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WYW3IR6APUSKOYKL5FT3ACTIHWHGQY32/ - Mailing List, Third Party Advisory | |
References | (GENTOO) https://security.gentoo.org/glsa/202101-17 - Third Party Advisory | |
CVSS |
v2 : v3 : |
v2 : 4.3
v3 : 3.7 |
CPE | cpe:2.3:a:thekelleys:dnsmasq:*:*:*:*:*:*:*:* cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* |
26 Jan 2021, 18:15
Type | Values Removed | Values Added |
---|---|---|
References |
|
20 Jan 2021, 16:15
Type | Values Removed | Values Added |
---|---|---|
New CVE |
Information
Published : 2021-01-20 16:15
Updated : 2023-12-10 13:41
NVD link : CVE-2020-25684
Mitre link : CVE-2020-25684
CVE.ORG link : CVE-2020-25684
JSON object : View
Products Affected
debian
- debian_linux
thekelleys
- dnsmasq
arista
- eos
fedoraproject
- fedora
CWE