PT-2019-4132 · Nlnet+2 · Unbound+2

Published 2019-10-03 · Updated 2024-06-15 · CVE-2019-16866

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions Unbound versions prior to 1.9.4

Description The issue is related to the handling of certain NOTIFY queries, which can be exploited by a remote attacker to trigger a crash. The source IP address of the query must match an access-control rule. This can lead to a denial of service.

Recommendations For versions prior to 1.9.4, update to version 1.9.4 or later to resolve the issue. As a temporary workaround, consider restricting access to the NOTIFY query functionality until a patch is available.

Fix

Buffer Overflow

Improper Handling of Exceptional Conditions

Use of Uninitialized Resource

Weakness Enumeration

CWE-119

CWE-755

CWE-908

Related Identifiers

ALT-PU-2019-2821

ALT-PU-2019-2824

BDU:2019-04712

CVE-2019-16866

DSA-4544-1

MGASA-2019-0317

OPENSUSE-SU-2024:11005-1

Affected Products

Alt Linux

Ubuntu

Unbound

References · 27

• https://nlnetlabs.nl/downloads/unbound/CVE-2019-16866.txt · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2019-16866 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2019-16866 · Security Note
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/E65NCWZZB2D75ZIYWPXKMVGSGNYW4JMC · Vendor Advisory
• https://debian.org/security/2019/dsa-4544 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MLRHE7TQFAOV4MB2ELTOGESZYUL65NUJ · Vendor Advisory
• https://usn.ubuntu.com/4149-1 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2024:11005-1 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2019-16866 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2019-16866 · Vendor Advisory
• https://osv.dev/vulnerability/DSA-4544-1 · Vendor Advisory
• https://osv.dev/vulnerability/MGASA-2019-0317 · Vendor Advisory
• https://bdu.fstec.ru/vul/2019-04712 · Security Note
• https://osv.dev/vulnerability/ALPINE-CVE-2019-16866 · Vendor Advisory
• https://advisories.mageia.org/MGASA-2019-0317.html · Security Note