Vulnerability Details : CVE-2022-30698
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.
Threat overview for CVE-2022-30698
Top countries where our scanners detected CVE-2022-30698
Top open port discovered on systems with this issue 53
IPs affected by CVE-2022-30698 1,007
Threat actors abusing to this issue? Yes
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Exploit prediction scoring system (EPSS) score for CVE-2022-30698
Probability of exploitation activity in the next 30 days: 0.13%
CVSS scores for CVE-2022-30698
|Base Score||Base Severity||CVSS Vector||Exploitability Score||Impact Score||Source|
CWE ids for CVE-2022-30698
According to WASC, "Insufficient Session Expiration is when a web site permits an attacker to reuse old session credentials or session IDs for authorization."Assigned by: firstname.lastname@example.org (Primary)
References for CVE-2022-30698
[SECURITY] Fedora 36 Update: unbound-1.16.2-3.fc36 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
[SECURITY] [DLA 3371-1] unbound security update
Unbound: Multiple Vulnerabilities (GLSA 202212-02) — Gentoo securityThird Party Advisory
[SECURITY] Fedora 35 Update: unbound-1.16.2-3.fc35 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
Products affected by CVE-2022-30698