CVE-2016-0737 OpenStack Object Storage (Swift) allows remote attackers to cause a denial of service

What is CVE-2016-0737?

CVE-2016-0737 is a high-severity denial of service vulnerability in n/a, published on 29 Jan 2016. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

OpenStack Object Storage (Swift) before 2.4.0 does not properly close client connections, which allows remote attackers to cause a denial of service (proxy-server resource consumption) via a series of interrupted requests to a Large Object URL.

Weakness: CWE-399

Which versions are affected by CVE-2016-0737?

3 open source packages ship an affected version, including swift. It affects 1 product.

Products include Openstack Swift.

How do I fix CVE-2016-0737?

Upgrade swift to 2.4.0 or later.

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-2016-0737 being exploited?

There is no known exploitation of CVE-2016-0737 in the wild and no public exploit code.

Other vulnerabilities in n/a

• CVE-2016-0738 OpenStack Object Storage (Swift) allows remote attackers to cause a denial of service High 7.5
• CVE-2026-49017 OpenStack Swift: s3api middleware enters an infinite loop when processing a truncated aws-chunked PUT request body High 7.1
• CVE-2013-6396 Python Swift client is vulnerable to Missing SSL Certificate Check Medium 5.8
• CVE-2026-50221 OpenStack Swift vulnerable to authenticated server-side request forgery Medium 5.3
• CVE-2015-5223 OpenStack Object Storage (Swift) Sensitive Data Exposure Medium 5.0

Sources

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

Also known as DEBIAN-CVE-2016-0737, GHSA-972c-cfv8-2hq8, PYSEC-2026-929, UBUNTU-CVE-2016-0737.