CVE-2014-3517

api/metadata/handler.py in OpenStack Compute (Nova) before 2013.2.4, 2014.x before 2014.1.2, and Juno before Juno-2, when proxying metadata requests through Neutron, makes it easier for remote attackers to guess instance ID signatures via a brute-force attack that relies on timing differences in responses to instance metadata requests.

Published: 2014-08-07 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2014-3517 is rated Moderate Risk (45.8/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.94%). EPSS rose +1.54% over the last day, indicating growing attacker interest. Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2014-3517

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.40% 1.94% +1.54%
2 2025-12-21 0.25% 0.40% +0.15%
3 2025-03-30 — 0.25% —

Full EPSS history (8 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2014-3517

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.3 2.0 MEDIUM
AV:N/AC:M/Au:N/C:P/I:N/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:N)
No availability impact.
 8.6 2.9 [email protected]

Weakness enumeration for CVE-2014-3517

GitHub Security Advisory for CVE-2014-3517

GHSA-xjmj-p278-4jp5 · Severity: medium · Ecosystem: pip — OpenStack Compute (Nova) Exposure of Sensitive Information to an Unauthorized Actor vulnerability

OS Trackers for CVE-2014-3517

vendor priority summary link
debian not yet assigned CVE-2014-3517 not yet assigned priority: Debian including 1 source packages (nova), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2014-3517
redhat medium — https://access.redhat.com/security/cve/CVE-2014-3517
ubuntu medium CVE-2014-3517 medium priority: Ubuntu including 1 source packages (nova), 4 status rows across 4 suites (lucid, precise, trusty, upstream): released 2, DNE 1, not-affected 1. https://ubuntu.com/security/CVE-2014-3517

Affected software / configurations for CVE-2014-3517

Vendor Product Version Raw CPE
openstack nova >= 2013.2, <= 2013.2.4 cpe:2.3:a:openstack:nova:*:*:*:*:*:*:*:*
openstack nova >= 2014.1, < 2014.1.2 cpe:2.3:a:openstack:nova:*:*:*:*:*:*:*:*
openstack nova 2014.2.0 cpe:2.3:a:openstack:nova:2014.2.0:milestone1:*:*:*:*:*:*

References for CVE-2014-3517

cvelogic Threat Intelligence