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CVE-2016-0737· NVD / CVE Program· CNA redhat

OpenStack Object Storage (Swift) before 2.4.0 does not properly close client connections, which allows remote attackers to cause a denial of

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.

HighCVSS 7.5 · v3.0—No exploit Fix available
Published
Jan 29, 2016
Updated
Jun 16, 2026
EPSS
3.8% · 90th percentile
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Report tools

JSON

Action score

31

Monitor

Low priority for now.

CVSS
30 / 40 · 7.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
1 / 30 · 3.8%

Affected systems

VendorProduct
openstackswift

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • openstack swiftup to 2.3.0 inclusive

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12swiftbefore 2.4.0-12.4.0-1
PyPIswiftbefore 2.4.02.4.0
Red Hat:openstack:5::el6openstack-swiftbefore 0:1.13.1-8.el6ost0:1.13.1-8.el6ost
Red Hat:openstack:5::el6openstack-swift-accountbefore 0:1.13.1-8.el6ost0:1.13.1-8.el6ost
Red Hat:openstack:5::el6openstack-swift-containerbefore 0:1.13.1-8.el6ost0:1.13.1-8.el6ost
Red Hat:openstack:5::el6openstack-swift-docbefore 0:1.13.1-8.el6ost0:1.13.1-8.el6ost
Red Hat:openstack:5::el6openstack-swift-objectbefore 0:1.13.1-8.el6ost0:1.13.1-8.el6ost
Red Hat:openstack:5::el6openstack-swift-proxybefore 0:1.13.1-8.el6ost0:1.13.1-8.el6ost
Red Hat:openstack:5::el7openstack-swiftbefore 0:1.13.1-8.el7ost0:1.13.1-8.el7ost
Red Hat:openstack:5::el7openstack-swift-accountbefore 0:1.13.1-8.el7ost0:1.13.1-8.el7ost
Red Hat:openstack:5::el7openstack-swift-containerbefore 0:1.13.1-8.el7ost0:1.13.1-8.el7ost
Red Hat:openstack:5::el7openstack-swift-docbefore 0:1.13.1-8.el7ost0:1.13.1-8.el7ost
Red Hat:openstack:5::el7openstack-swift-objectbefore 0:1.13.1-8.el7ost0:1.13.1-8.el7ost
Red Hat:openstack:5::el7openstack-swift-proxybefore 0:1.13.1-8.el7ost0:1.13.1-8.el7ost
Red Hat:openstack:6::el7openstack-swiftbefore 0:2.2.0-6.el7ost0:2.2.0-6.el7ost
Red Hat:openstack:6::el7openstack-swift-accountbefore 0:2.2.0-6.el7ost0:2.2.0-6.el7ost
Red Hat:openstack:6::el7openstack-swift-containerbefore 0:2.2.0-6.el7ost0:2.2.0-6.el7ost
Red Hat:openstack:6::el7openstack-swift-docbefore 0:2.2.0-6.el7ost0:2.2.0-6.el7ost
Red Hat:openstack:6::el7openstack-swift-objectbefore 0:2.2.0-6.el7ost0:2.2.0-6.el7ost
Red Hat:openstack:6::el7openstack-swift-proxybefore 0:2.2.0-6.el7ost0:2.2.0-6.el7ost
Red Hat:openstack:7::el7openstack-swiftbefore 0:2.3.0-3.el7ost0:2.3.0-3.el7ost
Red Hat:openstack:7::el7openstack-swift-accountbefore 0:2.3.0-3.el7ost0:2.3.0-3.el7ost
Red Hat:openstack:7::el7openstack-swift-containerbefore 0:2.3.0-3.el7ost0:2.3.0-3.el7ost
Red Hat:openstack:7::el7openstack-swift-docbefore 0:2.3.0-3.el7ost0:2.3.0-3.el7ost

+2

Same product

openstack: all records

Other highest-scoring records for the same primary product.

  • CVE-2012-4406OpenStack Object Storage (swift) before 1.7.0 uses the loads function in the pickle Python module unsafely when storing and loading metadata
    41Plan
  • CVE-2026-71190In OpenStack Swift through 2.38.0, the proxy server Accept header parser contains a regular expression vulnerable to catastrophic backtracki
    34Monitor
  • CVE-2016-0738OpenStack Object Storage (Swift) before 2.3.1 (Kilo), 2.4.x, and 2.5.x before 2.5.1 (Liberty) do not properly close server connections, whic
    31Monitor
  • CVE-2026-49017In OpenStack Swift before 2.36.2 and 2.37.2, s3api middleware enters an infinite loop when processing a truncated aws-chunked PUT request bo
    28Monitor
  • CVE-2022-47950An issue was discovered in OpenStack Swift before 2.28.1, 2.29.x before 2.29.2, and 2.30.0.
    26Monitor
  • CVE-2026-71192In OpenStack Swift through 2.38.0, the S3API middleware does not sanitize Swift-native control headers (X-Copy-From, X-Copy-From-Account) fr
    24Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
debian:swift2.4.0-1 · Debian:12Package registry (OSV)
PyPI:swift2.4.0Package registry (OSV)
red hat:openstack-swift0:1.13.1-8.el6ost · Red Hat:openstack:5::el6Package registry (OSV)
red hat:openstack-swift-account0:1.13.1-8.el6ost · Red Hat:openstack:5::el6Package registry (OSV)
red hat:openstack-swift-container0:1.13.1-8.el6ost · Red Hat:openstack:5::el6Package registry (OSV)
red hat:openstack-swift-doc0:1.13.1-8.el6ost · Red Hat:openstack:5::el6Package registry (OSV)
red hat:openstack-swift-object0:1.13.1-8.el6ost · Red Hat:openstack:5::el6Package registry (OSV)
red hat:openstack-swift-proxy0:1.13.1-8.el6ost · Red Hat:openstack:5::el6Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-399 · Resource Management Errors

CVSS vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Noroxi analysis

No Noroxi analysis for this record yet

We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

We use this product, ask for help

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records