drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Zwei Probleme in Dnsmasq
Name: |
Zwei Probleme in Dnsmasq |
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ID: |
USN-4924-1 |
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Distribution: |
Ubuntu |
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Plattformen: |
Ubuntu 16.04 LTS |
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Datum: |
Do, 22. April 2021, 23:07 |
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Referenzen: |
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-14513
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-15107 |
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Applikationen: |
Dnsmasq |
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Originalnachricht |
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This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --iXLZC57Sht4Guz305NVGAi3819xKWnSRE Content-Type: multipart/mixed; boundary="F4KzIL1tLQPqdExseiq4z0NoRcVF4Bn0G"; 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: <7cbb155a-d00c-a7c2-a296-5d5703097219@canonical.com> Subject: [USN-4924-1] Dnsmasq vulnerabilities
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========================================================================== Ubuntu Security Notice USN-4924-1 April 22, 2021
dnsmasq vulnerabilities ==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 16.04 LTS
Summary:
Several security issues were fixed in Dnsmasq.
Software Description: - dnsmasq: Small caching DNS proxy and DHCP/TFTP server
Details:
It was discovered that Dnsmasq incorrectly handled certain wildcard synthesized NSEC records. A remote attacker could possibly use this issue to prove the non-existence of hostnames that actually exist. (CVE-2017-15107)
It was discovered that Dnsmasq incorrectly handled certain large DNS packets. A remote attacker could possibly use this issue to cause Dnsmasq to crash, resulting in a denial of service. (CVE-2019-14513)
Update instructions:
The problem can be corrected by updating your system to the following package versions:
Ubuntu 16.04 LTS: dnsmasq 2.75-1ubuntu0.16.04.10 dnsmasq-base 2.75-1ubuntu0.16.04.10 dnsmasq-utils 2.75-1ubuntu0.16.04.10
After a standard system update you need to reboot your computer to make all the necessary changes.
References: https://ubuntu.com/security/notices/USN-4924-1 CVE-2017-15107, CVE-2019-14513
Package Information: https://launchpad.net/ubuntu/+source/dnsmasq/2.75-1ubuntu0.16.04.10
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