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ubuntuUbuntuUSN-4976-2
HistorySep 07, 2022 - 12:00 a.m.

Dnsmasq vulnerability

2022-09-0700:00:00
ubuntu.com
29

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

4 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

NONE

Integrity Impact

LOW

Availability Impact

NONE

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

4.7 Medium

AI Score

Confidence

Low

0.002 Low

EPSS

Percentile

60.6%

JSON

Releases

  • Ubuntu 16.04 ESM

Packages

  • dnsmasq - Small caching DNS proxy and DHCP/TFTP server

Details

USN-4976-1 fixed a vulnerability in Dnsmasq. This update provides
the corresponding update for Ubuntu 16.04 ESM.

Dnsmasq has been updated to 2.79-1 for Ubuntu 16.04 ESM in order to fix
some security issues.

Original advisory details:

Petr Mensik discovered that Dnsmasq incorrectly randomized source ports in
certain configurations. A remote attacker could possibly use this issue to
facilitate DNS cache poisoning attacks.

OSVersionArchitecturePackageVersionFilename
Ubuntu16.04noarchdnsmasq< 2.79-1ubuntu0.16.04.1+esm1UNKNOWN
Ubuntu16.04noarchdnsmasq< 2.75-1ubuntu0.16.04.10UNKNOWN
Ubuntu16.04noarchdnsmasq-base< 2.75-1ubuntu0.16.04.10UNKNOWN
Ubuntu16.04noarchdnsmasq-utils< 2.75-1ubuntu0.16.04.10UNKNOWN
Ubuntu16.04noarchdnsmasq-utils< 2.79-1ubuntu0.16.04.1+esm1UNKNOWN
Ubuntu16.04noarchdnsmasq-base< 2.79-1ubuntu0.16.04.1+esm1UNKNOWN

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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

4 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

NONE

Integrity Impact

LOW

Availability Impact

NONE

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

4.7 Medium

AI Score

Confidence

Low

0.002 Low

EPSS

Percentile

60.6%

JSON
Related for USN-4976-2
nessus33debiancve1osv5openvas24redhatcve1rocky1fedora3redhat1cvelist1altlinux2photon7almalinux1oraclelinux1mageia1slackware1cbl_mariner1nvd1prion1alpinelinux1freebsd1gentoo1veracode1ubuntu1ubuntucve1cve1suse2rosalinux1oracle1