CVE-2019-16866
published 2019-10-03CVE-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…
PriorityP342high7.5CVSS 3.1
AVNACLPRNUINSUCNINAH
EPSS
3.51%
87.7th percentile
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.
Affected
7 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| canonical | ubuntu_linux | — | — |
| debian | unbound | < unbound 1.9.4-1 (bookworm) | unbound 1.9.4-1 (bookworm) |
| nlnetlabs | unbound | < 1.9.4 | 1.9.4 |
| nlnetlabs | unbound | >= 0 < 1.9.4-1 | 1.9.4-1 |
| nlnetlabs | unbound | >= 0 < 1.9.4-1 | 1.9.4-1 |
| nlnetlabs | unbound | >= 0 < 1.9.4-1 | 1.9.4-1 |
| nlnetlabs | unbound | >= 0 < 1.9.4-1 | 1.9.4-1 |
CVSS provenance
nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
nvdv2.05.0MEDIUMAV:N/AC:L/Au:N/C:N/I:N/A:P
osv7.5HIGH
vendor_debian7.5HIGH
vendor_redhat7.5HIGH
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Ubuntu
Unbound vulnerability
vendor_ubuntu·2019-10-08
CVE-2019-16866 Unbound vulnerability
Title: Unbound vulnerability
Summary: Unbound could be made to crash if it received a specially crafted
NOTIFY query.
It was discovered that Unbound incorrectly handled certain NOTIFY queries.
An attacker could possibly use this issue to cause a denial of service.
Instructions: In general, a standard system update will make all the necessary changes.
Red Hat
unbound: uninitialized memory accesses leads to crash via a crafted NOTIFY query
vendor_redhat·2019-10-03·CVSS 7.5
CVE-2019-16866 [HIGH] CWE-822 unbound: uninitialized memory accesses leads to crash via a crafted NOTIFY query
unbound: uninitialized memory accesses leads to crash via a crafted NOTIFY query
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.
Statement: This issue has been classified as having low security impact because:
- per default, unbound is not configured to listen on a public interface
- per default, the ACL is limited to localhost, so even if listening to a public interface, the crash cannot happen per default
It mostly affects people running unbound as a "public" DNS resolver. Using such configurations, unbound has no valuable secrets that could be obtained by a successful attack, so at best the server crashes and restarts, resulting in an e
Debian
CVE-2019-16866: unbound - Unbound before 1.9.4 accesses uninitialized memory, which allows remote attacker...
vendor_debian·2019·CVSS 7.5
CVE-2019-16866 [HIGH] CVE-2019-16866: unbound - Unbound before 1.9.4 accesses uninitialized memory, which allows remote attacker...
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.
Scope: local
bookworm: resolved (fixed in 1.9.4-1)
bullseye: resolved (fixed in 1.9.4-1)
forky: resolved (fixed in 1.9.4-1)
sid: resolved (fixed in 1.9.4-1)
trixie: resolved (fixed in 1.9.4-1)
GHSA
GHSA-gg25-v243-f7cq: Unbound before 1
ghsa_unreviewed·2022-05-24
CVE-2019-16866 [HIGH] CWE-755 GHSA-gg25-v243-f7cq: Unbound before 1
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.
OSV
CVE-2019-16866: Unbound before 1
osv·2019-10-03·CVSS 7.5
CVE-2019-16866 [HIGH] CVE-2019-16866: Unbound before 1
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.
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2019-16866 unbound: uninitialized memory accesses leads to crash via a crafted NOTIFY query
bugzilla·2019-11-01·CVSS 7.5
CVE-2019-16866 [HIGH] CVE-2019-16866 unbound: uninitialized memory accesses leads to crash via a crafted NOTIFY query
CVE-2019-16866 unbound: uninitialized memory accesses leads to crash via a crafted NOTIFY query
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.
References:
https://nlnetlabs.nl/downloads/unbound/CVE-2019-16866.txt
https://github.com/NLnetLabs/unbound/blob/7dfbcdf276e7a1070978209d2533b3b8cc504f86/doc/Changelog
Discussion:
Statement:
This issue has been classified as having low security impact because:
- per default, unbound is not configured to listen on a public interface
- per default, the ACL is limited to localhost, so even if listening to a public interface, the crash cannot happen per default
It mostly affects people running unbou
Bugzilla
CVE-2019-16866 unbound: uninitialized memory accesses leads to crash via a crafted NOTIFY query [fedora-all]
bugzilla·2019-11-01·CVSS 7.5
CVE-2019-16866 [HIGH] CVE-2019-16866 unbound: uninitialized memory accesses leads to crash via a crafted NOTIFY query [fedora-all]
CVE-2019-16866 unbound: uninitialized memory accesses leads to crash via a crafted NOTIFY query [fedora-all]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of fedora-all.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.
NOTE: this issue affe
https://github.com/NLnetLabs/unbound/blob/release-1.9.4/doc/Changeloghttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/E65NCWZZB2D75ZIYWPXKMVGSGNYW4JMC/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MLRHE7TQFAOV4MB2ELTOGESZYUL65NUJ/https://nlnetlabs.nl/downloads/unbound/CVE-2019-16866.txthttps://seclists.org/bugtraq/2019/Oct/23https://usn.ubuntu.com/4149-1/https://www.debian.org/security/2019/dsa-4544https://github.com/NLnetLabs/unbound/blob/release-1.9.4/doc/Changeloghttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/E65NCWZZB2D75ZIYWPXKMVGSGNYW4JMC/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MLRHE7TQFAOV4MB2ELTOGESZYUL65NUJ/https://nlnetlabs.nl/downloads/unbound/CVE-2019-16866.txthttps://seclists.org/bugtraq/2019/Oct/23https://usn.ubuntu.com/4149-1/https://www.debian.org/security/2019/dsa-4544
2019-10-03
Published