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A flaw was found in dnsmasq before version 2.83. A heap-based buffer overflow was discovered in the way RRSets are sorted before validating with DNSSEC data. An attacker on the network who can forge DNS replies such as that they are accepted as valid could use this flaw to cause a buffer overflow with arbitrary data in a heap memory segment possibly executing code on the machine. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
| Reporter | Title | Published | Views | Family All 152 |
|---|---|---|---|---|
 | dnsmasq -- DNS cache poisoning, and DNSSEC buffer overflow, vulnerabilities | 16 Sep 202000:00 | – | freebsd |
 | Security fix for the ALT Linux 10 package dnsmasq version 2.83-alt1 | 22 Jan 202100:00 | – | altlinux |
 | Alibaba Cloud Linux 3 : 0009: dnsmasq (ALINUX3-SA-2021:0009) | 14 May 202500:00 | – | nessus |
| CentOS 8 : dnsmasq (CESA-2021:0150) | 29 Jan 202100:00 | – | nessus |
| Debian DLA-2604-1 : dnsmasq security update | 23 Mar 202100:00 | – | nessus |
| Debian DSA-4844-1 : dnsmasq - security update | 5 Feb 202100:00 | – | nessus |
| dnsmasq < 2.83 Multiple Vulnerabilities (DNSPOOQ) | 19 Jan 202100:00 | – | nessus |
| EulerOS 2.0 SP8 : dnsmasq (EulerOS-SA-2021-1138) | 1 Feb 202100:00 | – | nessus |
| EulerOS 2.0 SP9 : dnsmasq (EulerOS-SA-2021-1244) | 5 Feb 202100:00 | – | nessus |
| EulerOS 2.0 SP9 : dnsmasq (EulerOS-SA-2021-1263) | 5 Feb 202100:00 | – | nessus |
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29 Jan 2021 08:00Current
7High risk
Vulners AI Score7
CVSS 3.18.1
CVSS 28.3
EPSS0.45359