CVE-2022-30698

nlnetlabs unbound, fedoraproject fedora

TLP:CLEAR

csirt@kutim:~/threat-intel/cve/CVE-2022-30698

Katalog CVE

CVSS 6.5 · Medium EPSS 1,1%

Kerentanan Insufficient Session Expiration pada nlnetlabs unbound, fedoraproject fedora. Skor CVSS 3.1 6.5 (Medium) menurut NVD.

Deskripsi (NVD)

NLnet Labs Unbound, up to and including version 1.16.1 is vulnerable to a novel type of the "ghost domain names" attack. The vulnerability works by targeting an Unbound instance. Unbound is queried for a subdomain of a rogue domain name. The rogue nameserver returns delegation information for the subdomain that updates Unbound's delegation cache. This action can be repeated before expiry of the delegation information by querying Unbound for a second level subdomain which the rogue nameserver provides new delegation information. Since Unbound is a child-centric resolver, the ever-updating child delegation information can keep a rogue domain name resolvable long after revocation. From version 1.16.2 on, Unbound checks the validity of parent delegation records before using cached delegation information.

Rincian

Terbit di NVD
1 Agustus 2022
Terakhir diubah
17 Juni 2026
Status NVD
Modified
CVSS 3.1
6.5 (Medium), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N · uraikan di kalkulator
Jenis kelemahan (CWE)
CWE-613: Insufficient Session Expiration
EPSS (30 hari)
1,1% peluang dieksploitasi; lebih tinggi dari 65,3% CVE lain

Produk dan versi terdampak

VendorProdukVersi terdampak
nlnetlabs unbound Semua versi sebelum 1.16.2
fedoraproject fedora Versi 35
fedoraproject fedora Versi 36

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

Sumber: NVD · CVE.org · EPSS. Halaman ini disusun otomatis dari data tersebut; pembaruan terakhir 5 Okt 2026, 20:10 WITA. Kalau sistem di Perangkat Daerah memakai produk ini dan butuh bantuan, laporkan lewat kanal pelaporan.