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redhatRedHatRHSA-2021:0240
HistoryJan 25, 2021 - 2:03 p.m.

(RHSA-2021:0240) Moderate: dnsmasq security update

2021-01-2514:03:53
access.redhat.com
84
dnsmasq
security update
dns forwarder
dhcp server
loose address/port check
loose query name check
off-path attacker
cve-2020-25684
cve-2020-25685
cve-2020-25686

CVSS2

4.3

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

AV:N/AC:M/Au:N/C:N/I:P/A:N

CVSS3

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

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N

EPSS

0.012

Percentile

85.0%

JSON

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

Security Fix(es):

  • 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)

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.

Related

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cve 3
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ibm 1
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malwarebytes 1
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archlinux 1
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rosalinux 1
alpinelinux
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CVE-2020-25684
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2021-01-20 16:15:14
CVE-2020-25686
2021-01-20 17:15:13
redhat
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(RHSA-2021:0245) Moderate: dnsmasq security update
2021-01-25 14:51:18
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debiancve
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CVE-2020-25686
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openvas
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QNAP QTS DNSpooq Vulnerabilities (QSA-21-09)
2021-07-01 00:00:00
Huawei EulerOS: Security Advisory for dnsmasq (EulerOS-SA-2021-2134)
2021-07-07 00:00:00
CentOS: Security Advisory for dnsmasq (CESA-2021:0153)
2021-01-27 00:00:00
thn
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A Set of Severe Flaws Affect Popular DNSMasq DNS Forwarder
2021-01-19 12:01:00
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RHEL 7 : dnsmasq (RHSA-2021:0245)
2021-01-25 00:00:00
Amazon Linux 2 : dnsmasq (ALAS-2021-1587)
2021-01-26 00:00:00
CentOS 7 : dnsmasq (CESA-2021:0153)
2021-01-26 00:00:00
centos
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2021-01-25 14:08:58
cve
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2021-01-20 16:15:14
CVE-2020-25686
2021-01-20 17:15:13
CVE-2020-25685
2021-01-20 16:15:14
oraclelinux
oraclelinux
dnsmasq security update
2021-01-19 00:00:00
dnsmasq security update
2021-01-20 00:00:00
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Medium: dnsmasq
2021-01-25 23:09:00
prion
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Design/Logic Flaw
2021-01-20 16:15:00
Design/Logic Flaw
2021-01-20 16:15:00
Design/Logic Flaw
2021-01-20 17:15:00
ibm
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Security Bulletin: IBM Security Privileged Identity Manager is affected by security vulnerabilities (CVE-2020-25684, CVE-2020-25685, CVE-2020-25686)
2021-08-04 17:40:31
nvd
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CVE-2020-25684
2021-01-20 16:15:14
CVE-2020-25685
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CVE-2020-25686
2021-01-20 17:15:13
arista
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Security Advisory 0061
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f5
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K98221124 : Multiple dnsmasq vulnerabilities CVE-2020-25684, CVE-2020-25685, and CVE-2020-25686
2021-03-30 00:00:00
osv
osv
CVE-2020-25684
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CVE-2020-25685
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CVE-2020-25686
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altlinux
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gentoo
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2021-01-21 01:47:44
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2021-01-20 16:41:17
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2021-05-06 23:56:42
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2021-05-06 23:56:42
CVE-2020-25684 affecting package dnsmasq 2.79-11
2021-05-06 23:56:42
githubexploit
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rosalinux
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2021-07-02 16:38:26

CVSS2

4.3

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

AV:N/AC:M/Au:N/C:N/I:P/A:N

CVSS3

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

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N

EPSS

0.012

Percentile

85.0%

JSON
Related for RHSA-2021:0240
alpinelinux3redhat13ubuntucve3redhatcve3debiancve3cvelist3openvas33thn1nessus59centos1cve3oraclelinux2amazon1prion3ibm1nvd3arista1f51osv7altlinux1gentoo1fedora2debian3ics1almalinux1photon6slackware1suse2threatpost1cisco1malwarebytes1freebsd1mageia1archlinux1cert1openwrt1ubuntu2veracode3cbl_mariner3githubexploit3rosalinux1