CVE-2022-30699
Vulnerability from cvelistv5
Published
2022-08-01 14:13
Modified
2024-09-16 18:29
Severity ?
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 rogue domain name when the cached delegation information is about to expire. The rogue nameserver delays the response so that the cached delegation information is expired. Upon receiving the delayed answer containing the delegation information, Unbound overwrites the now expired entries. This action can be repeated when the delegation information is about to expire making the rogue delegation information ever-updating. From version 1.16.2 on, Unbound stores the start time for a query and uses that to decide if the cached delegation information can be overwritten.
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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