Summary
Package updates are available for Amazon Linux 2 that fix the following vulnerabilities: CVE-2021-3468: 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 on the avahi Unix socket is not correctly handled in the client_work function, allowing a local attacker to trigger an infinite loop. The highest threat from this vulnerability is to the availability of the avahi service, which becomes unresponsive after this flaw is triggered.
Fixed packages 23
| Release | Package | Fixed in |
|---|---|---|
| Amazon Linux · 2 | avahi | 0:0.6.31-20.amzn2.0.3 |
| Amazon Linux · 2 | avahi-autoipd | 0:0.6.31-20.amzn2.0.3 |
| Amazon Linux · 2 | avahi-compat-howl | 0:0.6.31-20.amzn2.0.3 |
| Amazon Linux · 2 | avahi-compat-howl-devel | 0:0.6.31-20.amzn2.0.3 |
| Amazon Linux · 2 | avahi-compat-libdns_sd | 0:0.6.31-20.amzn2.0.3 |
| Amazon Linux · 2 | avahi-compat-libdns_sd-devel | 0:0.6.31-20.amzn2.0.3 |
| Amazon Linux · 2 | avahi-debuginfo | 0:0.6.31-20.amzn2.0.3 |
| Amazon Linux · 2 | avahi-devel | 0:0.6.31-20.amzn2.0.3 |
| Amazon Linux · 2 | avahi-dnsconfd | 0:0.6.31-20.amzn2.0.3 |
| Amazon Linux · 2 | avahi-glib | 0:0.6.31-20.amzn2.0.3 |
| Amazon Linux · 2 | avahi-glib-devel | 0:0.6.31-20.amzn2.0.3 |
| Amazon Linux · 2 | avahi-gobject | 0:0.6.31-20.amzn2.0.3 |
| Amazon Linux · 2 | avahi-gobject-devel | 0:0.6.31-20.amzn2.0.3 |
| Amazon Linux · 2 | avahi-libs | 0:0.6.31-20.amzn2.0.3 |
| Amazon Linux · 2 | avahi-qt3 | 0:0.6.31-20.amzn2.0.3 |
| Amazon Linux · 2 | avahi-qt3-devel | 0:0.6.31-20.amzn2.0.3 |
| Amazon Linux · 2 | avahi-qt4 | 0:0.6.31-20.amzn2.0.3 |
| Amazon Linux · 2 | avahi-qt4-devel | 0:0.6.31-20.amzn2.0.3 |
| Amazon Linux · 2 | avahi-tools | 0:0.6.31-20.amzn2.0.3 |
| Amazon Linux · 2 | avahi-ui | 0:0.6.31-20.amzn2.0.3 |
| Amazon Linux · 2 | avahi-ui-devel | 0:0.6.31-20.amzn2.0.3 |
| Amazon Linux · 2 | avahi-ui-gtk3 | 0:0.6.31-20.amzn2.0.3 |
| Amazon Linux · 2 | avahi-ui-tools | 0:0.6.31-20.amzn2.0.3 |
Vulnerabilities 1
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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
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web
https://alas.aws.amazon.com/cve/html/CVE-2021-3468.html