CVE-2022-30698
Vulnerability from cvelistv5
Published
2022-08-01 14:13
Modified
2024-09-16 19:35
Severity ?
EPSS score ?
0.09% (0.22232)
Summary
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.
References
sep@nlnetlabs.nlhttps://lists.debian.org/debian-lts-announce/2023/03/msg00024.html
sep@nlnetlabs.nlhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5L3ZFWZZFPBIL654BG75RWXUMPFQJ5EC/
sep@nlnetlabs.nlhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/D35CX4SCZVNKZTWJXPDFTHWZHINMGEZD/
sep@nlnetlabs.nlhttps://security.gentoo.org/glsa/202212-02Third Party Advisory
sep@nlnetlabs.nlhttps://www.nlnetlabs.nl/downloads/unbound/CVE-2022-30698_CVE-2022-30699.txtVendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2023/03/msg00024.html
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5L3ZFWZZFPBIL654BG75RWXUMPFQJ5EC/
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/D35CX4SCZVNKZTWJXPDFTHWZHINMGEZD/
af854a3a-2127-422b-91ae-364da2661108https://security.gentoo.org/glsa/202212-02Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.nlnetlabs.nl/downloads/unbound/CVE-2022-30698_CVE-2022-30699.txtVendor Advisory
Impacted products
Vendor Product Version
NLnet Labs Unbound Version: unspecified   <
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