A flaw was found in dnsmasq before version 2.83. A heap-based buffer overflow exists 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.
Vulnerable Product | Search on Vulmon | Subscribe to Product |
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thekelleys dnsmasq |
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fedoraproject fedora 32 |
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fedoraproject fedora 33 |
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debian debian linux 9.0 |
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debian debian linux 10.0 |
Get your updates when you can for gear from scores of manufacturers Two clichés, one headline: 'No good deed goes unpunished' and 'It's always DNS'
Seven vulnerabilities have been found in a popular DNS caching proxy and DHCP server known as dnsmasq, raising the possibility of widespread online attacks on networking devices. The flaws, collectively dubbed DNSpooq, were revealed on Tuesday by Israel-based security firm JSOF at the conclusion of a five-month coordinated disclosure period. The bugs are believed to affect products from more than 40 IT vendors, including Cisco, Comcast, Google, Netgear, Red Hat, and Ubiquiti, and major Linux dis...