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CVE-2020-25681

Status Candidate

Overview

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.

Related Files

Red Hat Security Advisory 2021-0281-01
Posted Feb 3, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-0281-01 - Red Hat OpenShift Container Platform is Red Hat's cloud computing Kubernetes application platform solution designed for on-premise or private cloud deployments.

tags | advisory
systems | linux, redhat
advisories | CVE-2020-14382, CVE-2020-2304, CVE-2020-2305, CVE-2020-25681, CVE-2020-25682, CVE-2020-25683, CVE-2020-25684, CVE-2020-25685, CVE-2020-25686, CVE-2020-25687, CVE-2020-25694, CVE-2020-25696, CVE-2020-8559, CVE-2020-8564, CVE-2021-20182
SHA-256 | dbb2906dd388b0ae05e96eb75aa85f2757386ed1012ef745eb72036c24c8f74c
Gentoo Linux Security Advisory 202101-17
Posted Jan 25, 2021
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 202101-17 - Multiple vulnerabilities have been found in Dnsmasq, the worst of which may allow remote attackers to execute arbitrary code. Versions less than 2.83 are affected.

tags | advisory, remote, arbitrary, vulnerability
systems | linux, gentoo
advisories | CVE-2020-25681, CVE-2020-25682, CVE-2020-25683, CVE-2020-25684, CVE-2020-25685, CVE-2020-25686, CVE-2020-25687
SHA-256 | d74f76a7c852d4e7f3291ec2d0874f62ca39a4044f320676208797e0e34e79a6
Red Hat Security Advisory 2021-0151-01
Posted Jan 19, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-0151-01 - The dnsmasq packages contain Dnsmasq, a lightweight DNS forwarder and DHCP server. Issues addressed include a buffer overflow vulnerability.

tags | advisory, overflow
systems | linux, redhat
advisories | CVE-2020-25681, CVE-2020-25682, CVE-2020-25683, CVE-2020-25684, CVE-2020-25685, CVE-2020-25686, CVE-2020-25687
SHA-256 | 5cacb245ded9cb0275435d6d03ed5404c38a386848e0aebb23e203773a840c87
Red Hat Security Advisory 2021-0152-01
Posted Jan 19, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-0152-01 - The dnsmasq packages contain Dnsmasq, a lightweight DNS forwarder and DHCP server. Issues addressed include a buffer overflow vulnerability.

tags | advisory, overflow
systems | linux, redhat
advisories | CVE-2020-25681, CVE-2020-25682, CVE-2020-25683, CVE-2020-25684, CVE-2020-25685, CVE-2020-25686, CVE-2020-25687
SHA-256 | 9b59a676f7ab63b37837fc8aca08d6a1fcfb43fdce5b00d2ab7a4fb5581caad6
Red Hat Security Advisory 2021-0150-01
Posted Jan 19, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-0150-01 - The dnsmasq packages contain Dnsmasq, a lightweight DNS forwarder and DHCP server. Issues addressed include a buffer overflow vulnerability.

tags | advisory, overflow
systems | linux, redhat
advisories | CVE-2020-25681, CVE-2020-25682, CVE-2020-25683, CVE-2020-25684, CVE-2020-25685, CVE-2020-25686, CVE-2020-25687
SHA-256 | edf41284ec526e49fbfc0b6cad88932a74ce20dec21784a5789b3eaf7d4ba150
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