CVE-2018-16846 Denial of service in ceph

What is CVE-2018-16846?

CVE-2018-16846 is a medium-severity denial of service vulnerability in Canonical Ubuntu Linux, published on 15 Jan 2019. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

It was found in Ceph versions before 13.2.4 that authenticated ceph RGW users can cause a denial of service against OMAPs holding bucket indices.

Weakness: CWE-770

Which versions are affected by CVE-2018-16846?

It affects 6 products.

Products include Canonical Ubuntu Linux, Debian Debian Linux, Opensuse Leap, Redhat Ceph, Redhat Ceph Storage, Redhat Enterprise Linux Server.

How do I fix CVE-2018-16846?

Upgrade to a fixed version.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2018-16846 being exploited?

There is no known exploitation of CVE-2018-16846 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 DEBIAN-CVE-2018-16846, GHSA-77fq-6x6c-cq7q, UBUNTU-CVE-2018-16846.