CVE-2015-1856

Swift vulnerability

CVSS

5.5

EPSS

3.9%

EPSS pct

89th

Exploited

No known

OpenStack Object Storage (Swift) before 2.3.0, when allow_version is configured, allows remote authenticated users to delete the latest version of an object by leveraging listing access to the x-versions-location container.

Affected vendor

Openstack

Affected product

Swift

CVSS vector

AV:N/AC:L/Au:S/C:N/I:P/A:P

Weakness type (CWE)

CWE-264 — Permissions, Privileges, and Access Controls

Published

2015-04-17

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring single-factor authentication. Successful exploitation leads to partial impact to integrity, partial impact to availability.

Its EPSS score of 3.9% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 89% of all scored CVEs.

Check your external exposure to CVE-2015-1856

Confirm whether Openstack Swift is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2015-1856.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2015-1856

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2015-1856 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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