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CVE-2019-16866

Good to know:

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Date: October 3, 2019

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.

Language: C

Severity Score

Related Resources (15)

https://access.redhat.com/security/cve/CVE-2019-16866
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MLRHE7TQFAOV4MB2ELTOGESZYUL65NUJ/
https://nvd.nist.gov/vuln/detail/CVE-2019-16866
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/E65NCWZZB2D75ZIYWPXKMVGSGNYW4JMC/
https://seclists.org/bugtraq/2019/Oct/23
https://usn.ubuntu.com/4149-1/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MLRHE7TQFAOV4MB2ELTOGESZYUL65NUJ/
https://security-tracker.debian.org/tracker/CVE-2019-16866
https://github.com/NLnetLabs/unbound/blob/release-1.9.4/doc/Changelog
https://www.debian.org/security/2019/dsa-4544
https://security.alpinelinux.org/vuln/CVE-2019-16866
https://people.canonical.com/~ubuntu-security/cve/CVE-2019-16866
https://nlnetlabs.nl/downloads/unbound/CVE-2019-16866.txt
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/E65NCWZZB2D75ZIYWPXKMVGSGNYW4JMC/
https://www.mend.io/vulnerability-database/CVE-2019-16866

Severity Score

Weakness Type (CWE)

Improper Restriction of Operations within the Bounds of a Memory Buffer

CWE-119

Use of Uninitialized Resource

CWE-908

Improper Handling of Exceptional Conditions

CWE-755

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): PARTIAL
Additional information:

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