Xen Speculative Execution information disclosure

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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2.5$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in Xen. This vulnerability affects unknown code of the component Speculative Execution. The manipulation leads to an unknown weakness. This vulnerability is documented as CVE-2021-28689. There is not any exploit available. Applying a patch is the recommended action to fix this issue.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Xen (Virtualization Software) (version now known). This issue affects some unknown processing of the component Speculative Execution. Using CWE to declare the problem leads to CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. Impacted is confidentiality.

The weakness was released 06/11/2021. The advisory is shared at xenbits.xenproject.org. The identification of this vulnerability is CVE-2021-28689. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1592 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 232305 (Linux Distros Unpatched Vulnerability : CVE-2021-28689), which helps to determine the existence of the flaw in a target environment.

Applying a patch is able to eliminate this problem.

The vulnerability is also documented in the vulnerability database at Tenable (232305). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 2.6
VulDB Meta Temp Score: 2.5

VulDB Base Score: 2.6
VulDB Temp Score: 2.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 232305
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2021-28689

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Timelineinfo

03/18/2021 🔍
06/11/2021 +84 days 🔍
06/11/2021 +0 days 🔍
03/10/2025 +1368 days 🔍

Sourcesinfo

Advisory: xenbits.xenproject.org
Status: Confirmed

CVE: CVE-2021-28689 (🔍)
GCVE (CVE): GCVE-0-2021-28689
GCVE (VulDB): GCVE-100-176861

Entryinfo

Created: 06/11/2021 23:00
Updated: 03/10/2025 20:33
Changes: 06/11/2021 23:00 (34), 06/13/2021 15:28 (5), 03/10/2025 20:33 (16)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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