Debian Security Advisory

DLA-2604-1 dnsmasq -- LTS security update

Date Reported:
22 Mar 2021
Affected Packages:
Security database references:
In Mitre's CVE dictionary: CVE-2020-25681, CVE-2020-25682, CVE-2020-25683, CVE-2020-25684, CVE-2020-25687.
More information:

Moshe Kol and Shlomi Oberman of JSOF discovered several vulnerabilities in dnsmasq, a small caching DNS proxy and DHCP/TFTP server. They could result in denial of service, cache poisoning or the execution of arbitrary code.

For Debian 9 stretch, these problems have been fixed in version 2.76-5+deb9u3.

We recommend that you upgrade your dnsmasq packages.

For the detailed security status of dnsmasq please refer to its security tracker page at:

Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: