CVE-2019-16866 — Improper Handling of Exceptional Conditions in Unbound

CWE-755 — Improper Handling of Exceptional ConditionsCWE-908 — Use of Uninitialized ResourceCWE-822 — Untrusted Pointer Dereference9 documents8 sources
Severity
7.5HIGHNVD
EPSS
1.2%
top 20.66%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Nlnetlabs UnboundCanonical Ubuntu Linux
Timeline
PublishedOct 3
Latest updateMay 24

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.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitability: 3.9 | Impact: 3.6

Affected Packages2 packages

▶NVDnlnetlabs/unbound< 1.9.4
▶Debiannlnetlabs/unbound< 1.9.4-1+3

Also affects: Ubuntu Linux 19.04

Patches

Patch: nlnetlabs.nl ↗Patch: nlnetlabs.nl ↗

🔴Vulnerability Details

3
GHSA
GHSA-gg25-v243-f7cq: Unbound before 1↗2022-05-24
▶
OSV
CVE-2019-16866: Unbound before 1↗2019-10-03
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CVEList
CVE-2019-16866: Unbound before 1↗2019-10-03
▶

📋Vendor Advisories

3
Ubuntu
Unbound vulnerability↗2019-10-08
▶
Red Hat
unbound: uninitialized memory accesses leads to crash via a crafted NOTIFY query↗2019-10-03
▶
Debian
CVE-2019-16866: unbound - Unbound before 1.9.4 accesses uninitialized memory, which allows remote attacker...↗2019
▶

💬Community

2
Bugzilla
CVE-2019-16866 unbound: uninitialized memory accesses leads to crash via a crafted NOTIFY query↗2019-11-01
▶
Bugzilla
CVE-2019-16866 unbound: uninitialized memory accesses leads to crash via a crafted NOTIFY query [fedora-all]↗2019-11-01
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CVE-2019-16866 — Nlnetlabs Unbound vulnerability | cvebase