Summary
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.
Fixed packages 17
| Release | Package | Fixed in |
|---|---|---|
| AlmaLinux · 8 | avahi | 0.7-21.el8_9.1 |
| AlmaLinux · 8 | avahi-autoipd | 0.7-21.el8_9.1 |
| AlmaLinux · 8 | avahi-compat-howl | 0.7-21.el8_9.1 |
| AlmaLinux · 8 | avahi-compat-howl-devel | 0.7-21.el8_9.1 |
| AlmaLinux · 8 | avahi-compat-libdns_sd | 0.7-21.el8_9.1 |
| AlmaLinux · 8 | avahi-compat-libdns_sd-devel | 0.7-21.el8_9.1 |
| AlmaLinux · 8 | avahi-devel | 0.7-21.el8_9.1 |
| AlmaLinux · 8 | avahi-glib | 0.7-21.el8_9.1 |
| AlmaLinux · 8 | avahi-glib-devel | 0.7-21.el8_9.1 |
| AlmaLinux · 8 | avahi-gobject | 0.7-21.el8_9.1 |
| AlmaLinux · 8 | avahi-gobject-devel | 0.7-21.el8_9.1 |
| AlmaLinux · 8 | avahi-libs | 0.7-21.el8_9.1 |
| AlmaLinux · 8 | avahi-tools | 0.7-21.el8_9.1 |
| AlmaLinux · 8 | avahi-ui | 0.7-21.el8_9.1 |
| AlmaLinux · 8 | avahi-ui-devel | 0.7-21.el8_9.1 |
| AlmaLinux · 8 | avahi-ui-gtk3 | 0.7-21.el8_9.1 |
| AlmaLinux · 8 | python3-avahi | 0.7-21.el8_9.1 |
Vulnerabilities 6
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Medium 6.2
Reachable assertion in avahi_dns_packet_append_record
A vulnerability was found in Avahi, where a reachable assertion exists in avahi_dns_packet_append_record.
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Medium 6.2
Reachable assertion in avahi_escape_label
A vulnerability was found in Avahi. A reachable assertion exists in the avahi_escape_label() function.
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Medium 6.2
Reachable assertion in dbus_set_host_name
A vulnerability was found in Avahi. A reachable assertion exists in the dbus_set_host_name function.
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Medium 6.2
Reachable assertion in avahi_rdata_parse
A vulnerability was found in Avahi. A reachable assertion exists in the avahi_rdata_parse() function.
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Medium 6.2
Reachable assertion in avahi_alternative_host_name
A vulnerability was found in Avahi. A reachable assertion exists in the avahi_alternative_host_name() function.
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Unscored —
A flaw was found in avahi in versions 0.6 up to 0.8. The event used to signal the termination of the client connection …
References
-
report
https://access.redhat.com/security/cve/CVE-2021-3468
-
report
https://access.redhat.com/security/cve/CVE-2023-38469
-
report
https://access.redhat.com/security/cve/CVE-2023-38470
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report
https://access.redhat.com/security/cve/CVE-2023-38471
-
report
https://access.redhat.com/security/cve/CVE-2023-38472
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report
https://access.redhat.com/security/cve/CVE-2023-38473
-
report
https://bugzilla.redhat.com/1939614
-
report
https://bugzilla.redhat.com/2191687
-
report
https://bugzilla.redhat.com/2191690
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report
https://bugzilla.redhat.com/2191691
-
report
https://bugzilla.redhat.com/2191692
-
report
https://bugzilla.redhat.com/2191694
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advisory
https://errata.almalinux.org/8/ALSA-2023-7836.html