CVE-2020-25705

high

Description

A flaw in ICMP packets in the Linux kernel may allow an attacker to quickly scan open UDP ports. This flaw allows an off-path remote attacker to effectively bypass source port UDP randomization. Software that relies on UDP source port randomization are indirectly affected as well on the Linux Based Products (RUGGEDCOM RM1224: All versions between v5.0 and v6.4, SCALANCE M-800: All versions between v5.0 and v6.4, SCALANCE S615: All versions between v5.0 and v6.4, SCALANCE SC-600: All versions prior to v2.1.3, SCALANCE W1750D: v8.3.0.1, v8.6.0, and v8.7.0, SIMATIC Cloud Connect 7: All versions, SIMATIC MV500 Family: All versions, SIMATIC NET CP 1243-1 (incl. SIPLUS variants): Versions 3.1.39 and later, SIMATIC NET CP 1243-7 LTE EU: Version

From the Tenable Blog

Microsoft’s December 2020 Patch Tuesday Addresses 58 CVEs including CVE-2020-25705 (SAD DNS)

Published: 2020-12-08

The final Patch Tuesday of 2020 includes fixes for 58 CVEs, including workaround details for a severe vulnerability in Windows DNS Resolver called SAD DNS. Microsoft patched 58 CVEs in the December 2020 Patch Tuesday release, including 9 CVEs rated as critical.