drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Zwei Probleme in Avahi
Name: |
Zwei Probleme in Avahi |
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ID: |
USN-5008-1 |
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Distribution: |
Ubuntu |
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Plattformen: |
Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 20.10, Ubuntu 21.04 |
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Datum: |
Mi, 7. Juli 2021, 23:11 |
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Referenzen: |
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3468
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3502 |
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Applikationen: |
Avahi |
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Originalnachricht |
This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --===============4861469214178580204== Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="t5pHB2tjTlAqGI1tiX7pQZoGpx1Mg3k8A"
This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --t5pHB2tjTlAqGI1tiX7pQZoGpx1Mg3k8A Content-Type: multipart/mixed; boundary="8xIoO9Z1poadYUYGfAWV2MK9FKUN0VbqO"; protected-headers="v1" From: Marc Deslauriers <marc.deslauriers@canonical.com> Reply-To: Ubuntu Security <security@ubuntu.com> To: "ubuntu-security-announce@lists.ubuntu.com" <ubuntu-security-announce@lists.ubuntu.com> Message-ID: <9a53e4ee-6601-87bc-23d9-c91e965acea6@canonical.com> Subject: [USN-5008-1] Avahi vulnerabilities
--8xIoO9Z1poadYUYGfAWV2MK9FKUN0VbqO Content-Type: text/plain; charset=utf-8 Content-Language: en-C Content-Transfer-Encoding: quoted-printable
========================================================================== Ubuntu Security Notice USN-5008-1 July 07, 2021
avahi vulnerabilities ==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 21.04 - Ubuntu 20.10 - Ubuntu 20.04 LTS - Ubuntu 18.04 LTS
Summary:
Several security issues were fixed in Avahi.
Software Description: - avahi: IPv4LL network address configuration daemon
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. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, and Ubuntu 20.10. (CVE-2021-3468)
It was discovered that Avahi incorrectly handled certain hotnames. A local attacker could possibly use this issue to cause Avahi to crash, resulting in a denial of service. This issue only affected Ubuntu 20.10 and Ubuntu 21.04. (CVE-2021-3502)
Update instructions:
The problem can be corrected by updating your system to the following package versions:
Ubuntu 21.04: avahi-daemon 0.8-5ubuntu3.1 libavahi-core7 0.8-5ubuntu3.1
Ubuntu 20.10: avahi-daemon 0.8-3ubuntu1.1 libavahi-core7 0.8-3ubuntu1.1
Ubuntu 20.04 LTS: avahi-daemon 0.7-4ubuntu7.1 libavahi-core7 0.7-4ubuntu7.1
Ubuntu 18.04 LTS: avahi-daemon 0.7-3.1ubuntu1.3 libavahi-core7 0.7-3.1ubuntu1.3
In general, a standard system update will make all the necessary changes.
References: https://ubuntu.com/security/notices/USN-5008-1 CVE-2021-3468, CVE-2021-3502
Package Information: https://launchpad.net/ubuntu/+source/avahi/0.8-5ubuntu3.1 https://launchpad.net/ubuntu/+source/avahi/0.8-3ubuntu1.1 https://launchpad.net/ubuntu/+source/avahi/0.7-4ubuntu7.1 https://launchpad.net/ubuntu/+source/avahi/0.7-3.1ubuntu1.3
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