CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
AI Score
Confidence
High
EPSS
Percentile
93.0%
USN-6657-1 fixed several vulnerabilities in Dnsmasq. This update provides
the corresponding update for Ubuntu 16.04 LTS and Ubuntu 18.04 LTS.
Original advisory details:
Elias Heftrig, Haya Schulmann, Niklas Vogel, and Michael Waidner discovered
that Dnsmasq icorrectly handled validating DNSSEC messages. A remote
attacker could possibly use this issue to cause Dnsmasq to consume
resources, leading to a denial of service. (CVE-2023-50387)
It was discovered that Dnsmasq incorrectly handled preparing an NSEC3
closest encloser proof. A remote attacker could possibly use this issue to
cause Dnsmasq to consume resources, leading to a denial of service.
(CVE-2023-50868)
It was discovered that Dnsmasq incorrectly set the maximum EDNS.0 UDP
packet size as required by DNS Flag Day 2020. This issue only affected
Ubuntu 23.10. (CVE-2023-28450)
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
Ubuntu | 18.04 | noarch | dnsmasq-base | < 2.90-0ubuntu0.18.04.1+esm1 | UNKNOWN |
Ubuntu | 18.04 | noarch | dnsmasq | < 2.79-1ubuntu0.7 | UNKNOWN |
Ubuntu | 18.04 | noarch | dnsmasq-base | < 2.79-1ubuntu0.7 | UNKNOWN |
Ubuntu | 18.04 | noarch | dnsmasq-base-lua | < 2.79-1ubuntu0.7 | UNKNOWN |
Ubuntu | 18.04 | noarch | dnsmasq-utils | < 2.79-1ubuntu0.7 | UNKNOWN |
Ubuntu | 16.04 | noarch | dnsmasq-base | < 2.90-0ubuntu0.16.04.1+esm1 | UNKNOWN |
Ubuntu | 16.04 | noarch | dnsmasq | < 2.75-1ubuntu0.16.04.10 | UNKNOWN |
Ubuntu | 16.04 | noarch | dnsmasq-base | < 2.75-1ubuntu0.16.04.10 | UNKNOWN |
Ubuntu | 16.04 | noarch | dnsmasq-utils | < 2.75-1ubuntu0.16.04.10 | UNKNOWN |