CVE-2020-25681

Katalog CVE

CVSS 8.1 · High EPSS 81,2%

Kerentanan Heap-based Buffer Overflow pada thekelleys dnsmasq, fedoraproject fedora +1 lainnya. Skor CVSS 3.1 8.1 (High) menurut NVD.

Deskripsi (NVD)

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.

Rincian

Terbit di NVD

20 Januari 2021

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-122: Heap-based Buffer Overflow

EPSS (30 hari)

81,2% peluang dieksploitasi; lebih tinggi dari 99,6% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://bugzilla.redhat.com/show_bug.cgi?id=1881875 issue tracking · patch · advisory pihak ketiga
• https://lists.debian.org/debian-lts-announce/2021/03/msg00027.html mailing list · advisory pihak ketiga
• https://security.gentoo.org/glsa/202101-17 advisory pihak ketiga
• https://www.debian.org/security/2021/dsa-4844 advisory pihak ketiga
• https://www.jsof-tech.com/disclosures/dnspooq/ advisory pihak ketiga
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QGB7HL3OWHTLE...
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WYW3IR6APUSKO...
• https://www.kb.cert.org/vuls/id/434904