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Ubuntu.comUB:CVE-2020-25681
HistoryJan 19, 2021 - 12:00 a.m.

CVE-2020-25681

2021-01-1900:00:00
ubuntu.com
ubuntu.com
26

8.1 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

8.3 High

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

COMPLETE

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

0.159 Low

EPSS

Percentile

95.8%

A flaw was found in dnsmasq before version 2.83. A heap-based buffer
overflow was discovered in the way RRSets are sorted before validating with
DNSSEC data. An attacker on the network, who can forge DNS replies such as
that they are accepted as valid, could use this flaw to cause a buffer
overflow with arbitrary data in a heap memory segment, possibly executing
code on the machine. The highest threat from this vulnerability is to data
confidentiality and integrity as well as system availability.

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8.1 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

8.3 High

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

COMPLETE

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

0.159 Low

EPSS

Percentile

95.8%

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