CVE-2013-4477

Exp

The LDAP backend in OpenStack Identity (Keystone) Grizzly and Havana, when removing a role on a tenant for a user who does not have that role, adds the role to the user, which allows local users to gain privileges.

Published: 2013-11-02 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2013-4477 is rated Exploit Available (50/100): CVSS Low severity, with low exploitation likelihood (EPSS 0.44%). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

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

Public exploit references (Exploit-DB) for CVE-2013-4477

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2013-4477

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 0.15% 0.44% +0.29%
2 2025-12-14 0.06% 0.15% +0.09%
3 2025-03-17 — 0.06% —

Full EPSS history (7 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2013-4477

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
3.3 2.0 LOW
AV:L/AC:M/Au:N/C:P/I:P/A:N Click to expand
Access vector (AV:L)
Requires local access to the target system.
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:P)
Partial integrity impact.
Availability impact (A:N)
No availability impact.
 3.4 4.9 [email protected]

Weakness enumeration for CVE-2013-4477

GitHub Security Advisory for CVE-2013-4477

GHSA-f889-wfwm-6p7m · Severity: low · Ecosystem: pip — OpenStack Identity Keystone Privilege Escalation vulnerability

OS Trackers for CVE-2013-4477

vendor priority summary link
debian not yet assigned CVE-2013-4477 not yet assigned priority: Debian including 1 source packages (keystone), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2013-4477
redhat medium — https://access.redhat.com/security/cve/CVE-2013-4477
ubuntu medium CVE-2013-4477 medium priority: Ubuntu including 1 source packages (keystone), 6 status rows across 6 suites (lucid, precise, quantal, raring, saucy, upstream): released 4, DNE 1, not-affected 1. https://ubuntu.com/security/CVE-2013-4477

Affected software / configurations for CVE-2013-4477

Vendor Product Version Raw CPE
openstack grizzly — cpe:2.3:a:openstack:grizzly:-:*:*:*:*:*:*:*
openstack havana — cpe:2.3:a:openstack:havana:-:*:*:*:*:*:*:*

References for CVE-2013-4477

cvelogic Threat Intelligence