CVE ID:	CVE-2020-25683
Description:	A flaw was found in dnsmasq before version 2.83. A heap-based buffer overflow was discovered in dnsmasq when DNSSEC is enabled and before it validates the received DNS entries. A remote attacker, who can create valid DNS replies, could use this flaw to cause an overflow in a heap-allocated memory. This flaw is caused by the lack of length checks in rfc1035.c:extract_name(), which could be abused to make the code execute memcpy() with a negative size in get_rdata() and cause a crash in dnsmasq, resulting in a denial of service. The highest threat from this vulnerability is to system availability.
Test IDs:	1.3.6.1.4.1.25623.1.1.13.2021.040.01   1.3.6.1.4.1.25623.1.1.10.2021.0059
Cross References:	Common Vulnerability Exposure (CVE) ID: CVE-2020-25683 Debian Security Information: DSA-4844 (Google Search) https://www.debian.org/security/2021/dsa-4844 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QGB7HL3OWHTLEPSMLDGOMXQKG3KM2QME/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WYW3IR6APUSKOYKL5FT3ACTIHWHGQY32/ https://security.gentoo.org/glsa/202101-17 https://bugzilla.redhat.com/show_bug.cgi?id=1882018 https://bugzilla.redhat.com/show_bug.cgi?id=1882018 https://www.jsof-tech.com/disclosures/dnspooq/ https://www.jsof-tech.com/disclosures/dnspooq/ https://lists.debian.org/debian-lts-announce/2021/03/msg00027.html