Ubuntu alert USN-4924-1 (dnsmasq)
| From: | Marc Deslauriers <marc.deslauriers@canonical.com> | |
| To: | "ubuntu-security-announce@lists.ubuntu.com" <ubuntu-security-announce@lists.ubuntu.com> | |
| Subject: | [USN-4924-1] Dnsmasq vulnerabilities | |
| Date: | Thu, 22 Apr 2021 14:21:41 -0400 | |
| Message-ID: | <7cbb155a-d00c-a7c2-a296-5d5703097219@canonical.com> |
========================================================================== 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/2.75-1ubuntu... -- ubuntu-security-announce mailing list ubuntu-security-announce@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-security...