CVE-2020-1700 Denial of service in ceph

What is CVE-2020-1700?

CVE-2020-1700 is a medium-severity denial of service vulnerability in Canonical Ubuntu Linux, published on 7 Feb 2020. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A flaw was found in the way the Ceph RGW Beast front-end handles unexpected disconnects. An authenticated attacker can abuse this flaw by making multiple disconnect attempts resulting in a permanent leak of a socket connection by radosgw. This flaw could lead to a denial of service condition by pile up of CLOSE_WAIT sockets, eventually leading to the exhaustion of available resources, preventing legitimate users from connecting to the system.

Weakness: CWE-400

Which versions are affected by CVE-2020-1700?

It affects 4 products.

Products include Canonical Ubuntu Linux, Ceph Ceph, Opensuse Leap, Redhat Openshift Container Storage.

How do I fix CVE-2020-1700?

Apply the vendor's patch.

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-2020-1700 being exploited?

There is no known exploitation of CVE-2020-1700 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-2020-1700, GHSA-g4r6-j635-4pr7, UBUNTU-CVE-2020-1700, USN-4304-1.