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CVE-2020-25681 A flaw was found in dnsmasq before version 2.83
Description
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.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| dnsmasq | Versions not published |
References
- www.jsof-tech.com www.jsof-tech.com
- bugzilla.redhat.com bugzilla.redhat.com
- FEDORA-2021-84440e87ba lists.fedoraproject.org
- GLSA-202101-17 security.gentoo.org
- DSA-4844 www.debian.org
- FEDORA-2021-2e4c3d5a9d lists.fedoraproject.org
- [debian-lts-announce] 20210322 [SECURITY] [DLA 2604-1] dnsmasq security update lists.debian.org
Timeline
- Published
- Last modified
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The 10 CVEs of dnsmasq →
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CVE-2020-14312
A flaw was found in the default configuration of dnsmasq, as shipped with Fedora versions prior to 31 and in all…
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CVE-2020-25686
A flaw was found in dnsmasq before version 2.83
Not rated