CVE-2021-45955: Buffer Overflow
DISPUTED Dnsmasq 2.86 has a heap-based buffer overflow in resizepacket (called from FuzzResizePacket and fuzzrfc1035.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.
Affected Software
Event History
Frequently Asked Questions
What is the vulnerability ID of this issue?
The vulnerability ID is CVE-2021-45955.
What is the severity of CVE-2021-45955?
The severity of CVE-2021-45955 is critical with a severity value of 9.8.
What is the affected software of CVE-2021-45955?
The affected software is Dnsmasq version 2.86.
What is the CVE description for CVE-2021-45955?
CVE-2021-45955 is a heap-based buffer overflow vulnerability in Dnsmasq 2.86, which can be exploited due to the lack of a proper bounds check.
Are there any known references for CVE-2021-45955?
Yes, you can find references for CVE-2021-45955 at the following URLs: [reference 1](https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=35898), [reference 2](https://github.com/google/oss-fuzz-vulns/blob/main/vulns/dnsmasq/OSV-2021-932.yaml), [reference 3](https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2022q1/016162.html).