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| Rule General Information |
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| Release Date: | 2020-08-24 | |
| Rule Name: | NLnet Labs Unbound NOTIFY Queries Denial of Service Vulnerability (CVE-2019-16866) | |
| Severity: | ||
| CVE ID: | ||
| Rule Protection Details |
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| Description: | Unbound before 1.9.4 accesses uninitialized memory, which allows remote attackers to trigger a crash via a crafted NOTIFY query. The source IP address of the query must match an access-control rule. | |
| Impact: | An attacker can launch a denial of service attack by exploiting the vulnerability successfully. | |
| Affected OS: | Windows, Others | |
| Reference: | https://github.com/NLnetLabs/unbound/blob/release-1.9.4/doc/Changelog https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/E65NCWZZB2D75ZIYWPXKMVGSGNYW4JMC/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MLRHE7TQFAOV4MB2ELTOGESZYUL65NUJ/ https://nlnetlabs.nl/downloads/unbound/CVE-2019-16866.txt |
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| Solutions |
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| The vendors have released upgrade patches to fix vulnerabilities, please visit: https://github.com/NLnetLabs/unbound/blob/release-1.9.4/doc/Changelog |