CVE-2019-16866 Null dereference in n/a

What is CVE-2019-16866?

CVE-2019-16866 is a high-severity vulnerability in Canonical Ubuntu Linux, published on 3 Oct 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official 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.

Weakness: CWE-908, CWE-755

Which versions are affected by CVE-2019-16866?

It affects 2 products.

Products include Canonical Ubuntu Linux, Nlnetlabs Unbound.

How do I fix CVE-2019-16866?

Upgrade to a fixed version.

Is CVE-2019-16866 being exploited?

There is no known exploitation of CVE-2019-16866 in the wild and no public exploit code.

Other vulnerabilities in Canonical Ubuntu Linux

• CVE-2020-11651 SaltStack Salt Authentication Bypass Exploited Critical 9.8
• CVE-2020-7247 OpenSMTPD Remote Code Execution Exploited Critical 9.8
• CVE-2019-16928 Exim Out-of-bounds Write Exploited Critical 9.8
• CVE-2018-6789 Exim Buffer Overflow Exploited Critical 9.8
• CVE-2015-2590 Oracle Java SE and Java SE Embedded Remote Code Execution Exploited Critical 9.8

All Canonical Ubuntu Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as ALPINE-CVE-2019-16866, DEBIAN-CVE-2019-16866, DSA-4544-1, GHSA-gg25-v243-f7cq, MGASA-2019-0317.