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redhatRedHatRHSA-2017:2839
HistoryOct 02, 2017 - 1:35 p.m.

(RHSA-2017:2839) Critical: dnsmasq security update

2017-10-0213:35:14
access.redhat.com
88

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

7.5 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

0.333 Low

EPSS

Percentile

97.0%

JSON

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

Security Fix(es):

  • A heap buffer overflow was found in dnsmasq in the code responsible for building DNS replies. An attacker could send crafted DNS packets to dnsmasq which would cause it to crash or, potentially, execute arbitrary code. (CVE-2017-14491)

Red Hat would like to thank Felix Wilhelm (Google Security Team), Fermin J. Serna (Google Security Team), Gabriel Campana (Google Security Team), Kevin Hamacher (Google Security Team), and Ron Bowes (Google Security Team) for reporting this issue.

OSVersionArchitecturePackageVersionFilename
RedHat6x86_64dnsmasq< 2.48-13.el6_4.1dnsmasq-2.48-13.el6_4.1.x86_64.rpm
RedHat6x86_64dnsmasq< 2.48-13.el6_5.1dnsmasq-2.48-13.el6_5.1.x86_64.rpm
RedHat6i686dnsmasq-debuginfo< 2.48-16.el6_7.1dnsmasq-debuginfo-2.48-16.el6_7.1.i686.rpm
RedHat6x86_64dnsmasq-utils< 2.48-16.el6_7.1dnsmasq-utils-2.48-16.el6_7.1.x86_64.rpm
RedHat6x86_64dnsmasq-debuginfo< 2.48-16.el6_7.1dnsmasq-debuginfo-2.48-16.el6_7.1.x86_64.rpm
RedHat6ppc64dnsmasq< 2.48-16.el6_7.1dnsmasq-2.48-16.el6_7.1.ppc64.rpm
RedHat6x86_64dnsmasq-debuginfo< 2.48-14.el6_6.1dnsmasq-debuginfo-2.48-14.el6_6.1.x86_64.rpm
RedHat6s390xdnsmasq-utils< 2.48-16.el6_7.1dnsmasq-utils-2.48-16.el6_7.1.s390x.rpm
RedHat6x86_64dnsmasq< 2.48-5.el6_2.2dnsmasq-2.48-5.el6_2.2.x86_64.rpm
RedHat6ppc64dnsmasq-utils< 2.48-16.el6_7.1dnsmasq-utils-2.48-16.el6_7.1.ppc64.rpm
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9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

7.5 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

0.333 Low

EPSS

Percentile

97.0%

JSON
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