OpenStack Keystone Application Secret stack-based overflow

CVSS Meta Temp Score
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CTI Interest Score
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7.3$0-$5k0.00

Summaryinfo

A vulnerability was found in OpenStack Keystone and classified as critical. This vulnerability affects unknown code of the component Application Secret Handler. Such manipulation leads to stack-based overflow. This vulnerability is documented as CVE-2021-3563. There is not any exploit available.

Detailsinfo

A vulnerability was found in OpenStack Keystone (Cloud Software) (the affected version is unknown). It has been rated as critical. Affected by this issue is an unknown code of the component Application Secret Handler. The manipulation with an unknown input leads to a stack-based overflow vulnerability. Using CWE to declare the problem leads to CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). Impacted is confidentiality, integrity, and availability. CVE summarizes:

A flaw was found in openstack-keystone. Only the first 72 characters of an application secret are verified allowing attackers bypass some password complexity which administrators may be counting on. The highest threat from this vulnerability is to data confidentiality and integrity.

The weakness was released 08/26/2022. The advisory is available at access.redhat.com. This vulnerability is handled as CVE-2021-3563 since 05/21/2021. The technical details are unknown and an exploit is not available.

The vulnerability scanner Nessus provides a plugin with the ID 278510 (Ubuntu 22.04 LTS : OpenStack Keystone vulnerabilities (USN-7926-1)), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Tenable (278510). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.3

VulDB Base Score: 5.5
VulDB Temp Score: 5.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.1
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Stack-based overflow
CWE: CWE-121 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 278510
Nessus Name: Ubuntu 22.04 LTS : OpenStack Keystone vulnerabilities (USN-7926-1)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

05/21/2021 🔍
08/26/2022 +462 days 🔍
08/26/2022 +0 days 🔍
12/13/2025 +1205 days 🔍

Sourcesinfo

Vendor: openstack.org

Advisory: access.redhat.com
Status: Confirmed

CVE: CVE-2021-3563 (🔍)
GCVE (CVE): GCVE-0-2021-3563
GCVE (VulDB): GCVE-100-207386

Entryinfo

Created: 08/26/2022 20:43
Updated: 12/13/2025 17:17
Changes: 08/26/2022 20:43 (38), 10/02/2022 12:32 (11), 12/13/2025 17:17 (16)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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