OpenStack Object Storage (Swift) before 2.4.0 does not properly close client connections…
Priority MEDIUM 40CWE-399Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Partial Red Hat: 6 fixed, 3 without a fix
Attack profile from CVSS 3.0 · NVD. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-399 and the CVSS impact.
Summary
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.
Why it matters now
EPSS 0.03925 90th percentileScored 2026-11-07
Fix Partial swift (PyPI): 2.4.0Red Hat: 6 advisoriesRed Hat: 6 fixed, 3 without a fix
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
| — | swift (PyPI) | before 2.4.0 | 2.4.0 | Patch available | GHSA-972c-cfv8-2hq8 |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- swift (PyPI) Vendor— Affected before 2.4.0 Fixed in 2.4.0 Patch available GHSA-972c-cfv8-2hq8
Remediation
- Fix · GHSA-972c-cfv8-2hq8 swift (PyPI) Fixed in 2.4.0 Advisory →
Red Hat 6 advisories
- RHSA-2016:0328 Released 2016-03-01 · Red Hat rating Moderateopenstack-swift security update
- Red Hat Gluster Storage Server 3.1 on RHEL-7 openstack-swift-1.13.1-8.el7ost, openstack-swift-account-1.13.1-8.el7ost, openstack-swift-container-1.13.1-8.el7ost +3
- RHSA-2016:0329 Released 2016-03-01 · Red Hat rating Moderateopenstack-swift security update
- Red Hat Gluster Storage Server 3.1 on RHEL-6 openstack-swift-1.13.1-8.el6ost, openstack-swift-account-1.13.1-8.el6ost, openstack-swift-container-1.13.1-8.el6ost +3
- RHSA-2016:0155 Released 2016-02-09 · Red Hat rating Moderateopenstack-swift security update
- Red Hat Enterprise Linux OpenStack Platform 7.0 (Kilo) for RHEL 7 openstack-swift-2.3.0-3.el7ost, openstack-swift-account-2.3.0-3.el7ost, openstack-swift-container-2.3.0-3.el7ost +3
Show 3 more Red Hat advisories
- RHSA-2016:0126 Released 2016-02-08 · Red Hat rating Moderateopenstack-swift security update
- Red Hat Enterprise Linux OpenStack Platform 5.0 (Icehouse) for RHEL 6 openstack-swift-1.13.1-8.el6ost, openstack-swift-account-1.13.1-8.el6ost, openstack-swift-container-1.13.1-8.el6ost +3
- RHSA-2016:0127 Released 2016-02-08 · Red Hat rating Moderateopenstack-swift security update
- Red Hat Enterprise Linux OpenStack Platform 5.0 (Icehouse) for RHEL 7 openstack-swift-1.13.1-8.el7ost, openstack-swift-account-1.13.1-8.el7ost, openstack-swift-container-1.13.1-8.el7ost +3
- RHSA-2016:0128 Released 2016-02-08 · Red Hat rating Moderateopenstack-swift security update
- Red Hat Enterprise Linux OpenStack Platform 6.0 (Juno) for RHEL 7 openstack-swift-2.2.0-6.el7ost, openstack-swift-account-2.2.0-6.el7ost, openstack-swift-container-2.2.0-6.el7ost +3
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat OpenStack Platform 13 (Queens) | Affected | No fix planned: Out of support scope |
| Red Hat OpenStack Platform 16.2 | Affected | No fix planned: Out of support scope |
| Red Hat OpenStack Platform 17.1 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux OpenStack Platform 5.0 (Icehouse) for RHEL 6 | Fixed | RHSA-2016:0126 |
| Red Hat Enterprise Linux OpenStack Platform 5.0 (Icehouse) for RHEL 7 | Fixed | RHSA-2016:0127 |
| Red Hat Enterprise Linux OpenStack Platform 6.0 (Juno) for RHEL 7 | Fixed | RHSA-2016:0128 |
| Red Hat Enterprise Linux OpenStack Platform 7.0 (Kilo) for RHEL 7 | Fixed | RHSA-2016:0155 |
| Red Hat Gluster Storage Server 3.1 on RHEL-6 | Fixed | RHSA-2016:0329 |
| Red Hat Gluster Storage Server 3.1 on RHEL-7 | Fixed | RHSA-2016:0328 |
Not affected: 2 products
- Red Hat OpenStack Platform 18.0
- Red Hat OpenStack Platform 8 (Liberty)
Timeline
- 2026-10-02 Threatist record created from CVE-2016-0737
- 2026-10-03 Alias added: GHSA-972c-cfv8-2hq8
- 2026-10-07 Affected versions changed · Red Hat
- 2026-10-08 Affected versions changed · Red Hat
- 2026-10-21 EPSS moved to the 90th–95th percentile
- 2026-10-25 EPSS moved to the 50th–90th percentile
- 2026-10-27 EPSS moved to the 90th–95th percentile
- 2026-11-07 Priority changed: LOW → MEDIUM
References
Advisory 6
Other 13
- http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html
- https://review.openstack.org/#/c/217750/
- https://access.redhat.com/errata/RHSA-2016:0126
- https://access.redhat.com/errata/RHSA-2016:0127
- https://access.redhat.com/errata/RHSA-2016:0128
- https://access.redhat.com/errata/RHSA-2016:0155
- https://access.redhat.com/errata/RHSA-2016:0328
- https://access.redhat.com/errata/RHSA-2016:0329
- https://access.redhat.com/security/cve/CVE-2016-0737
- https://bugzilla.redhat.com/show_bug.cgi?id=1298924
- https://opendev.org/openstack/swift
- https://review.openstack.org/#/c/217750
- https://web.archive.org/web/20200228001102/http://www.securityfocus.com/bid/81432
More OpenStack Swift vulnerabilities
- TI-2017-12224 An issue was discovered in middleware.py in OpenStack Swauth through 1.2.0 when used with… CVSS 3.0CRITICAL 9.8
- TI-2012-03749 OpenStack Object Storage (swift) before 1.7.0 uses the loads function in the pickle… CVSS 3.1CRITICAL 9.8
- TI-2016-00662 OpenStack Object Storage (Swift) before 2.3.1 (Kilo), 2.4.x, and 2.5.x before 2.5.1… CVSS 3.0HIGH 7.5
- TI-2015-01667 OpenStack Object Storage (Swift) before 2.3.0, when allow_version is configured, allows… CVSS 2.0MEDIUM 5.5
- TI-2026-36265 Infinite loop in OpenStack Swift CVSS 4.0HIGH 7.1
- TI-2022-23761 An issue was discovered in OpenStack Swift before 2.28.1, 2.29.x before 2.29.2, and… CVSS 3.1MEDIUM 6.5
Sources
- CVE-2016-0737 · CVE Program
- CVE-2016-0737 · NVD
- FIRST EPSS
- GHSA-972c-cfv8-2hq8 · GitHub Advisory Database · CC BY 4.0
- CVE-2016-0737 · Red Hat security data · CC BY 4.0
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