Debian Security Advisory

DLA-2604-1 dnsmasq -- LTS security update

Date Reported:

22 Mar 2021

Affected Packages:

dnsmasq

Vulnerable:

Yes

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: https://security-tracker.debian.org/tracker/dnsmasq

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