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redhatRedHatRHSA-2021:0155
HistoryJan 19, 2021 - 12:37 p.m.

(RHSA-2021:0155) Moderate: dnsmasq security update

2021-01-1912:37:17
access.redhat.com
66

4.3 Medium

CVSS2

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

3.7 Low

CVSS3

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

0.012 Low

EPSS

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.

OSVersionArchitecturePackageVersionFilename
RedHat7ppc64dnsmasq-debuginfo< 2.76-7.el7_6.2dnsmasq-debuginfo-2.76-7.el7_6.2.ppc64.rpm
RedHat7ppc64lednsmasq-utils< 2.76-7.el7_6.2dnsmasq-utils-2.76-7.el7_6.2.ppc64le.rpm
RedHat7s390xdnsmasq< 2.76-7.el7_6.2dnsmasq-2.76-7.el7_6.2.s390x.rpm
RedHat7ppc64dnsmasq-utils< 2.76-7.el7_6.2dnsmasq-utils-2.76-7.el7_6.2.ppc64.rpm
RedHat7s390xdnsmasq-utils< 2.76-7.el7_6.2dnsmasq-utils-2.76-7.el7_6.2.s390x.rpm
RedHat7ppc64lednsmasq-debuginfo< 2.76-7.el7_6.2dnsmasq-debuginfo-2.76-7.el7_6.2.ppc64le.rpm
RedHat7x86_64dnsmasq-debuginfo< 2.76-7.el7_6.2dnsmasq-debuginfo-2.76-7.el7_6.2.x86_64.rpm
RedHat7ppc64lednsmasq< 2.76-7.el7_6.2dnsmasq-2.76-7.el7_6.2.ppc64le.rpm
RedHat7x86_64dnsmasq-utils< 2.76-7.el7_6.2dnsmasq-utils-2.76-7.el7_6.2.x86_64.rpm
RedHat7s390xdnsmasq-debuginfo< 2.76-7.el7_6.2dnsmasq-debuginfo-2.76-7.el7_6.2.s390x.rpm
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4.3 Medium

CVSS2

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

3.7 Low

CVSS3

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

0.012 Low

EPSS

Percentile

85.0%

JSON
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