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CVE-2019-14513

Publication date 1 August 2019

Last updated 24 July 2024

Ubuntu priority

Low

Why this priority?

Cvss 3 Severity Score

7.5 · High

Score breakdown

Improper bounds checking in Dnsmasq before 2.76 allows an attacker controlled DNS server to send large DNS packets that result in a read operation beyond the buffer allocated for the packet, a different vulnerability than CVE-2017-14491.

Read the notes from the security team

Status

Package Ubuntu Release Status
dnsmasq 24.04 LTS noble
Not affected
23.10 mantic
Not affected
23.04 lunar
Not affected
22.10 kinetic
Not affected
22.04 LTS jammy
Not affected
21.10 impish
Not affected
21.04 hirsute
Not affected
20.10 groovy
Not affected
20.04 LTS focal
Not affected
19.10 eoan
Not affected
19.04 disco
Not affected
18.04 LTS bionic
Not affected
16.04 LTS xenial
Fixed 2.75-1ubuntu0.16.04.10
14.04 LTS trusty
Vulnerable

Notes

msalvatore

The vulnerability writeup states, "The git commit affected is this one and before: 15379ea1f252d1f53c5d93ae970b22dedb233642". This commit, therefore, may resolve the issue: http://thekelleys.org.uk/gitweb/?p=dnsmasq.git;a=patch;h=d3a8b39c7df2f0debf3b5f274a1c37a9e261f94e

mdeslaur

can't reproduce on xenial, probably not a DoS issue

Severity score breakdown

Parameter Value
Base score 7.5 · High
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

Related Ubuntu Security Notices (USN)

    • USN-4924-1
    • Dnsmasq vulnerabilities
    • 22 April 2021

Other references