CVE-2025-65073
published 2025-11-17CVE-2025-65073: OpenStack Keystone before 26.0.1, 27.0.0, and 28.0.0 allows a /v3/ec2tokens or /v3/s3tokens request with a valid AWS Signature to provide Keystone…
PriorityP343high7.5CVSS 3.1
AVNACHPRNUINSCCLIHAN
EPSS
0.22%
12.4th percentile
OpenStack Keystone before 26.0.1, 27.0.0, and 28.0.0 allows a /v3/ec2tokens or /v3/s3tokens request with a valid AWS Signature to provide Keystone authorization.
Affected
12 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | keystone | < keystone 2:22.0.2-0+deb12u1 (bookworm) | keystone 2:22.0.2-0+deb12u1 (bookworm) |
| openstack | keystone | < 26.0.1 | 26.0.1 |
| openstack | keystone | — | — |
| openstack | keystone | — | — |
| openstack | keystone | >= 0 < 2:18.1.0-1+deb11u2 | 2:18.1.0-1+deb11u2 |
| openstack | keystone | >= 0 < 2:22.0.2-0+deb12u1 | 2:22.0.2-0+deb12u1 |
| openstack | keystone | >= 0 < 2:27.0.0-3+deb13u1 | 2:27.0.0-3+deb13u1 |
| openstack | keystone | >= 0 < 2:28.0.0-2 | 2:28.0.0-2 |
| openstack | keystone | >= 0 < 26.0.1 | 26.0.1 |
| openstack | keystone | >= 0 < 2:21.0.1-0ubuntu2.1 | 2:21.0.1-0ubuntu2.1 |
| openstack | keystone | >= 27.0.0.0rc1 < 27.0.0 | 27.0.0 |
| openstack | keystone | >= 28.0.0.0rc1 < 28.0.0 | 28.0.0 |
CVSS provenance
nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:H/A:N
osv7.5HIGH
vendor_debian7.5HIGH
vendor_redhat7.5HIGH
vendor_ubuntu7.4HIGH
Stop checking back — get the weekly exploitation signal.
Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.
Ubuntu
OpenStack Keystone vulnerabilities
vendor_ubuntu·2025-12-11·CVSS 7.4
CVE-2022-2447 [HIGH] OpenStack Keystone vulnerabilities
Title: OpenStack Keystone vulnerabilities
Summary: Several security issues were fixed in OpenStack Keystone.
Kay discovered that OpenStack Keystone incorrectly handled the ec2tokens
and s3tokens APIs. A remote attacker could possibly use this issue to
obtain unauthorized access and escalate privileges. (CVE-2025-65073)
It was discovered that OpenStack Keystone only validated the first 72
bytes of an application secret. An attacker could possibly use this issue
to bypass password complexity. (CVE-2021-3563)
It was discovered that OpenStack Keystone had a time lag before a token
should be revoked by the security policy. A remote administrator could use
this issue to maintain access for longer than expected. (CVE-2022-2447)
Instructions: In general, a standard system update will make all
Red Hat
openstack-keystone: OpenStack Keystone: Unauthorized access and privilege escalation via AWS signature validation flaw
vendor_redhat·2025-11-17·CVSS 7.5
CVE-2025-65073 [HIGH] CWE-863 openstack-keystone: OpenStack Keystone: Unauthorized access and privilege escalation via AWS signature validation flaw
openstack-keystone: OpenStack Keystone: Unauthorized access and privilege escalation via AWS signature validation flaw
OpenStack Keystone before 26.0.1, 27.0.0, and 28.0.0 allows a /v3/ec2tokens or /v3/s3tokens request with a valid AWS Signature to provide Keystone authorization.
A flaw was found in OpenStack Keystone. This vulnerability allows an attacker to obtain a valid OpenStack's Keystone token, leading to access to unauthorized resources or privilege escalation within the OpenStack instance via sending a valid AWS (Amazon Web Services) signature to the /v3/ec2tokens or /v3/s3tokens API (Application Programming Interface) endpoints.
Statement: This vulnerability allows an attacker to obtain a valid OpenStack's Keystone token belonging to a valid user by sending a valid AWS signatu
Debian
CVE-2025-65073: keystone - OpenStack Keystone before 26.0.1, 27.0.0, and 28.0.0 allows a /v3/ec2tokens or /...
vendor_debian·2025·CVSS 7.5
CVE-2025-65073 [HIGH] CVE-2025-65073: keystone - OpenStack Keystone before 26.0.1, 27.0.0, and 28.0.0 allows a /v3/ec2tokens or /...
OpenStack Keystone before 26.0.1, 27.0.0, and 28.0.0 allows a /v3/ec2tokens or /v3/s3tokens request with a valid AWS Signature to provide Keystone authorization.
Scope: local
bookworm: resolved (fixed in 2:22.0.2-0+deb12u1)
bullseye: resolved (fixed in 2:18.1.0-1+deb11u2)
forky: resolved (fixed in 2:28.0.0-2)
sid: resolved (fixed in 2:28.0.0-2)
trixie: resolved (fixed in 2:27.0.0-3+deb13u1)
OSV
keystone vulnerabilities
osv·2025-12-11·CVSS 7.4
CVE-2025-65073 [HIGH] keystone vulnerabilities
keystone vulnerabilities
Kay discovered that OpenStack Keystone incorrectly handled the ec2tokens
and s3tokens APIs. A remote attacker could possibly use this issue to
obtain unauthorized access and escalate privileges. (CVE-2025-65073)
It was discovered that OpenStack Keystone only validated the first 72
bytes of an application secret. An attacker could possibly use this issue
to bypass password complexity. (CVE-2021-3563)
It was discovered that OpenStack Keystone had a time lag before a token
should be revoked by the security policy. A remote administrator could use
this issue to maintain access for longer than expected. (CVE-2022-2447)
OSV
CVE-2025-65073: OpenStack Keystone before 26
osv·2025-11-17·CVSS 7.5
CVE-2025-65073 [HIGH] CVE-2025-65073: OpenStack Keystone before 26
OpenStack Keystone before 26.0.1, 27.0.0, and 28.0.0 allows a /v3/ec2tokens or /v3/s3tokens request with a valid AWS Signature to provide Keystone authorization.
GHSA
OpenStack Keystone allows /v3/ec2tokens or /v3/s3tokens request with valid AWS Signature to provide Keystone authorization.
ghsa·2025-11-17
CVE-2025-65073 [HIGH] CWE-863 OpenStack Keystone allows /v3/ec2tokens or /v3/s3tokens request with valid AWS Signature to provide Keystone authorization.
OpenStack Keystone allows /v3/ec2tokens or /v3/s3tokens request with valid AWS Signature to provide Keystone authorization.
OpenStack Keystone before 26.0.1, 27.0.0, and 28.0.0 allows a /v3/ec2tokens or /v3/s3tokens request with a valid AWS Signature to provide Keystone authorization.
OSV
OpenStack Keystone allows /v3/ec2tokens or /v3/s3tokens request with valid AWS Signature to provide Keystone authorization.
osv·2025-11-17
CVE-2025-65073 [HIGH] OpenStack Keystone allows /v3/ec2tokens or /v3/s3tokens request with valid AWS Signature to provide Keystone authorization.
OpenStack Keystone allows /v3/ec2tokens or /v3/s3tokens request with valid AWS Signature to provide Keystone authorization.
OpenStack Keystone before 26.0.1, 27.0.0, and 28.0.0 allows a /v3/ec2tokens or /v3/s3tokens request with a valid AWS Signature to provide Keystone authorization.
No detection rules found.
No public exploits indexed.
2025-11-17
Published