CVE-2021-45955

Katalog CVE

CVSS 9.8 · Critical EPSS 2,5%

Kerentanan Out-of-bounds Write pada thekelleys dnsmasq. Skor CVSS 3.1 9.8 (Critical) menurut NVD.

Deskripsi (NVD)

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

Rincian

Terbit di NVD

1 Januari 2022

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

9.8 (Critical), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-787: Out-of-bounds Write

EPSS (30 hari)

2,5% peluang dieksploitasi; lebih tinggi dari 84,4% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=35898 exploit · issue tracking · advisory pihak ketiga
• https://github.com/google/oss-fuzz-vulns/blob/main/vulns/dnsmasq/OSV-2021-932.yaml advisory pihak ketiga
• https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2022q1/016162.html mailing list · advisory pihak ketiga
• https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2022q1/016164.html mailing list · advisory pihak ketiga