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ubuntuUbuntuUSN-5008-2
HistoryJul 07, 2021 - 12:00 a.m.

Avahi vulnerability

2021-07-0700:00:00
ubuntu.com
85

5.5 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

5.8 Medium

AI Score

Confidence

High

2.1 Low

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

0.0004 Low

EPSS

Percentile

5.3%

Releases

  • Ubuntu 16.04 ESM
  • Ubuntu 14.04 ESM

Packages

  • avahi - Avahi IPv4LL network address configuration daemon

Details

USN-5008-1 fixed a vulnerability in avahi. This update provides
the corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM.

Original advisory details:

Thomas Kremer discovered that Avahi incorrectly handled termination signals
on the Unix socket. A local attacker could possibly use this issue to cause
Avahi to hang, resulting in a denial of service.

OSVersionArchitecturePackageVersionFilename
Ubuntu16.04noarchavahi-daemon< 0.6.32~rc+dfsg-1ubuntu2.3+esm1UNKNOWN
Ubuntu16.04noarchavahi-autoipd< 0.6.32~rc+dfsg-1ubuntu2.3UNKNOWN
Ubuntu16.04noarchavahi-autoipd-dbgsym< 0.6.32~rc+dfsg-1ubuntu2.3UNKNOWN
Ubuntu16.04noarchavahi-daemon< 0.6.32~rc+dfsg-1ubuntu2.3UNKNOWN
Ubuntu16.04noarchavahi-daemon-dbgsym< 0.6.32~rc+dfsg-1ubuntu2.3UNKNOWN
Ubuntu16.04noarchavahi-dbg< 0.6.32~rc+dfsg-1ubuntu2.3UNKNOWN
Ubuntu16.04noarchavahi-discover< 0.6.32~rc+dfsg-1ubuntu2.3UNKNOWN
Ubuntu16.04noarchavahi-dnsconfd< 0.6.32~rc+dfsg-1ubuntu2.3UNKNOWN
Ubuntu16.04noarchavahi-dnsconfd-dbgsym< 0.6.32~rc+dfsg-1ubuntu2.3UNKNOWN
Ubuntu16.04noarchavahi-ui-utils< 0.6.32~rc+dfsg-1ubuntu2.3UNKNOWN
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5.5 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

5.8 Medium

AI Score

Confidence

High

2.1 Low

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

0.0004 Low

EPSS

Percentile

5.3%