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osvGoogleOSV:ALSA-2023:7836
HistoryDec 14, 2023 - 12:00 a.m.

Moderate: avahi security update

2023-12-1400:00:00
Google
osv.dev
20
avahi
service discovery
local network
security fix
dos
reachable assertion

CVSS2

2.1

Attack Vector

LOCAL

Attack 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

CVSS3

6.2

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

AI Score

5.7

Confidence

High

EPSS

0

Percentile

9.0%

Avahi is an implementation of the DNS Service Discovery and Multicast DNS specifications for Zero Configuration Networking. It facilitates service discovery on a local network. Avahi and Avahi-aware applications allow you to plug your computer into a network and, with no configuration, view other people to chat with, view printers to print with, and find shared files on other computers.

Security Fix(es):

  • avahi: Local DoS by event-busy-loop from writing long lines to /run/avahi-daemon/socket (CVE-2021-3468)
  • avahi: Reachable assertion in avahi_dns_packet_append_record (CVE-2023-38469)
  • avahi: Reachable assertion in avahi_escape_label (CVE-2023-38470)
  • avahi: Reachable assertion in dbus_set_host_name (CVE-2023-38471)
  • avahi: Reachable assertion in avahi_rdata_parse (CVE-2023-38472)
  • avahi: Reachable assertion in avahi_alternative_host_name (CVE-2023-38473)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

CVSS2

2.1

Attack Vector

LOCAL

Attack 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

CVSS3

6.2

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

AI Score

5.7

Confidence

High

EPSS

0

Percentile

9.0%