Security News > 2021 > April > NAME:WRECK DNS vulnerabilities affect over 100 million devices
Security researchers today disclosed nine vulnerabilities affecting implementations of the Domain Name System protocol in popular TCP/IP network communication stacks running on at least 100 million devices.
It is not uncommon for DNS response packets to include the same domain name or a part of it more than once, so a compression mechanism exists to reduce the size of DNS messages.
Messagecompression RCE 7.7 CVE-2016-20009 IPnet - stack-based overflow on the message decompression function Messagecompression RCE 9.8 CVE-2020-15795 Nucleus NET. - DNS domain name label parsing functionality does notproperly validate the names in DNS responses.
Messagecompression RCE 8.1 CVE-2020-27736 Nucleus NET. - DNS domain name label parsing functionality does notproperly validate the name in DNS responses.
Domain namelabel parsing DoS 6.5 CVE-2020-27738 Nucleus NET. - DNS domain name record decompression functionalitydoes not properly validate the pointer offset values.
Messagecompression DoS 6.5 CVE-2021-25677 Nucleus NET - DNS client does not properly randomize DNS transaction ID and UDP port numbers Transaction ID DNS cache poisoning/spoofing 5.3 * NetX - two functions in the DNS resolver fo not check that the compression pointer doesnot equal the same offset currently being parsed, potentially leading to infinite loop Messagecompression DoS 6.5.
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Related Vulnerability
| DATE | CVE | VULNERABILITY TITLE | RISK |
|---|---|---|---|
| 2021-04-22 | CVE-2021-25677 | Use of Insufficiently Random Values vulnerability in Siemens products A vulnerability has been identified in APOGEE PXC Compact (BACnet) (All versions < V3.5.5), APOGEE PXC Compact (P2 Ethernet) (All versions < V2.8.20), APOGEE PXC Modular (BACnet) (All versions < V3.5.5), APOGEE PXC Modular (P2 Ethernet) (All versions < V2.8.20), Nucleus NET (All versions), Nucleus ReadyStart V3 (All versions < V2017.02.3), Nucleus ReadyStart V3 (All versions < V2017.02.4), Nucleus ReadyStart V4 (All versions < V4.1.0), Nucleus Source Code (Versions including affected DNS modules), SIMOTICS CONNECT 400 (All versions < V0.5.0.0), SIMOTICS CONNECT 400 (All versions >= V0.5.0.0 < V1.0.0.0), TALON TC Compact (BACnet) (All versions < V3.5.5), TALON TC Modular (BACnet) (All versions < V3.5.5). | 5.3 |
| 2021-04-22 | CVE-2020-15795 | Out-of-bounds Write vulnerability in Siemens Nucleus NET and Nucleus Source Code A vulnerability has been identified in APOGEE PXC Compact (BACnet) (All versions < V3.5.5), APOGEE PXC Compact (P2 Ethernet) (All versions < V2.8.20), APOGEE PXC Modular (BACnet) (All versions < V3.5.5), APOGEE PXC Modular (P2 Ethernet) (All versions < V2.8.20), Nucleus NET (All versions < V5.2), Nucleus Source Code (Versions including affected DNS modules), TALON TC Compact (BACnet) (All versions < V3.5.5), TALON TC Modular (BACnet) (All versions < V3.5.5). | 8.1 |
| 2021-04-22 | CVE-2020-27736 | Out-of-bounds Read vulnerability in Siemens products A vulnerability has been identified in APOGEE PXC Compact (BACnet) (All versions < V3.5.5), APOGEE PXC Compact (P2 Ethernet) (All versions < V2.8.20), APOGEE PXC Modular (BACnet) (All versions < V3.5.5), APOGEE PXC Modular (P2 Ethernet) (All versions < V2.8.20), Nucleus NET (All versions), Nucleus ReadyStart V3 (All versions < V2017.02.3), Nucleus ReadyStart V4 (All versions < V4.1.0), Nucleus Source Code (Versions including affected DNS modules), SIMOTICS CONNECT 400 (All versions < V0.5.0.0), TALON TC Compact (BACnet) (All versions < V3.5.5), TALON TC Modular (BACnet) (All versions < V3.5.5). | 6.5 |
| 2021-04-22 | CVE-2020-27738 | Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in Siemens products A vulnerability has been identified in APOGEE PXC Compact (BACnet) (All versions < V3.5.5), APOGEE PXC Compact (P2 Ethernet) (All versions < V2.8.20), APOGEE PXC Modular (BACnet) (All versions < V3.5.5), APOGEE PXC Modular (P2 Ethernet) (All versions < V2.8.20), Nucleus NET (All versions), Nucleus ReadyStart V3 (All versions < V2017.02.3), Nucleus ReadyStart V4 (All versions < V4.1.0), Nucleus Source Code (Versions including affected DNS modules), SIMOTICS CONNECT 400 (All versions < V0.5.0.0), TALON TC Compact (BACnet) (All versions < V3.5.5), TALON TC Modular (BACnet) (All versions < V3.5.5). | 7.4 |
| 2021-03-11 | CVE-2016-20009 | Out-of-bounds Write vulnerability in multiple products A DNS client stack-based buffer overflow in ipdnsc_decode_name() affects Wind River VxWorks 6.5 through 7. | 9.8 |