7.5

CVE-2015-7546: openstack keystone Insufficiently Protected Credentials

CVSS: 7.5v3.1HighModified
AliasesGHSA-8c4w-v65p-jvcvPYSEC-2016-20PYSEC-2026-2549
Published 03-02-2016Last modified 06-08-2024
Open JSON

Vulnerability summary

CVE-2015-7546 is a high (CVSS 7.5) Insufficiently Protected Credentials vulnerability in openstack keystone. EPSS estimates a 2.00% chance of exploitation in the next 30 days, higher than 80.4% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (NVD)
EPSS score
2.00%
0%100%
Low · +0.28 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 03-02-2016
    PublishedVulnerability first disclosed.
  2. 06-08-2024
    Last modifiedVulnerability information updated.

Description

The identity service in OpenStack Identity (Keystone) before 2015.1.3 (Kilo) and 8.0.x before 8.0.2 (Liberty) and keystonemiddleware (formerly python-keystoneclient) before 1.5.4 (Kilo) and Liberty before 2.3.3 does not properly invalidate authorization tokens when using the PKI or PKIZ token providers, which allows remote authenticated users to bypass intended access restrictions and gain access to cloud resources by manipulating byte fields within a revoked token.

CVSS metrics

7 scores · 4 sources · 4 versions

EPSS trend

Probability

2.00%

Chance of exploitation in the next 30 days

Percentile

80%

Versus all other CVEs

30-day change

+0.28 pp

From 1.72% on 18-09-2026

18-09-202618-10-2026
EPSS score
2.00%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Debian2 products
  • keystone< 2:9.0.0~rc2-1
  • python-keystonemiddleware< 3.0.0-1
Openstack2 products
PyPI2 products
  • keystone≥ 8.0, < 8.1.0 | ≥ 9.0.0.0b1, < 9.0.0.0b2
  • keystonemiddleware≥ 2.4.0, < 4.1.0 | < 1.5.4 | ≥ 1.6.0, < 2.3.3
Ubuntu2 products
  • keystone< 2:9.0.0-0ubuntu1
  • python-keystonemiddleware< 4.4.0-3
Oracle1 product

5 vendors · 9 products

References

16 links
Show all 16 references