Vulnerability Monitor

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CVE-2019-16866

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.

Published

2019-10-03T19:15:09.550

Last Modified

2024-11-21T04:31:14.060

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 7.5 (HIGH)

CVSSv2 Vector

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

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: PARTIAL

Exploitability Score

10.0

Impact Score

2.9

Weaknesses

Type: Primary
CWE-755
CWE-908

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	nlnetlabs	unbound	< 1.9.4	Yes
Operating System	canonical	ubuntu_linux	19.04	Yes

References

https://github.com/NLnetLabs/unbound/blob/release-1.9.4/doc/Changelog Product, Release Notes ([email protected])
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/E65NCWZZB2D75ZIYWPXKMVGSGNYW4JMC/ ([email protected])
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MLRHE7TQFAOV4MB2ELTOGESZYUL65NUJ/ ([email protected])
https://nlnetlabs.nl/downloads/unbound/CVE-2019-16866.txt Patch, Vendor Advisory ([email protected])
https://seclists.org/bugtraq/2019/Oct/23 ([email protected])
https://usn.ubuntu.com/4149-1/ Third Party Advisory ([email protected])
https://www.debian.org/security/2019/dsa-4544 ([email protected])
https://github.com/NLnetLabs/unbound/blob/release-1.9.4/doc/Changelog Product, Release Notes (af854a3a-2127-422b-91ae-364da2661108)
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/E65NCWZZB2D75ZIYWPXKMVGSGNYW4JMC/ (af854a3a-2127-422b-91ae-364da2661108)
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MLRHE7TQFAOV4MB2ELTOGESZYUL65NUJ/ (af854a3a-2127-422b-91ae-364da2661108)
https://nlnetlabs.nl/downloads/unbound/CVE-2019-16866.txt Patch, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://seclists.org/bugtraq/2019/Oct/23 (af854a3a-2127-422b-91ae-364da2661108)
https://usn.ubuntu.com/4149-1/ Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.debian.org/security/2019/dsa-4544 (af854a3a-2127-422b-91ae-364da2661108)