CVE-2021-45955

dnsmasq: heap-based buffer overflow in resize_packet

Published Dec 31, 2021 CVSS 3.1 · 9.8 Critical EPSS 2.6% KEV · Not listed
Description
Dnsmasq 2.86 has a heap-based buffer overflow in resize_packet (called from FuzzResizePacket and fuzz_rfc1035.c) because of the lack of a proper bounds check upon pseudo header re-insertion. NOTE: the vendor's position is that CVE-2021-45951 through CVE-2021-45957 "do not represent real vulnerabilities, to the best of our knowledge." However, a contributor states that a security patch (mentioned in 016162.html) is needed

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

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History

No history.

Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Aug 4, 2024, 4:54 AM
Reserved
Dec 31, 2021, 12:00 AM
Status
Modified
Published
Jan 1, 2022, 12:15 AM
Modified
Jun 17, 2026, 4:14 AM
Severity
Public date
Jan 1, 2022, 12:00 AM