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.
References
Link | Resource |
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https://bugzilla.redhat.com/show_bug.cgi?id=1881875 | Issue Tracking Patch Third Party Advisory |
https://lists.debian.org/debian-lts-announce/2021/03/msg00027.html | Mailing List Third Party Advisory |
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QGB7HL3OWHTLEPSMLDGOMXQKG3KM2QME/ | |
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WYW3IR6APUSKOYKL5FT3ACTIHWHGQY32/ | |
https://security.gentoo.org/glsa/202101-17 | Third Party Advisory |
https://www.debian.org/security/2021/dsa-4844 | Third Party Advisory |
https://www.jsof-tech.com/disclosures/dnspooq/ | Third Party Advisory |
Configurations
Configuration 1 (hide)
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Configuration 2 (hide)
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Configuration 3 (hide)
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History
07 Nov 2023, 03:20
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Information
Published : 2021-01-20 17:15
Updated : 2024-02-28 18:08
NVD link : CVE-2020-25681
Mitre link : CVE-2020-25681
CVE.ORG link : CVE-2020-25681
JSON object : View
Products Affected
debian
- debian_linux
fedoraproject
- fedora
thekelleys
- dnsmasq
CWE
CWE-122
Heap-based Buffer Overflow