Xen resource consumption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.2$0-$5k0.00

Summaryinfo

A vulnerability was found in Xen. It has been classified as problematic. This vulnerability affects unknown code. Performing a manipulation results in resource consumption. This vulnerability is known as CVE-2021-28688. Remote exploitation of the attack is possible. No exploit is available. It is suggested to install a patch to address this issue.

Detailsinfo

A vulnerability, which was classified as critical, was found in Xen (Virtualization Software) (unknown version). This affects an unknown code block. The manipulation with an unknown input leads to a resource consumption vulnerability. CWE is classifying the issue as CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. This is going to have an impact on availability.

The weakness was published 04/01/2021 as XSA-371. The advisory is shared at xenbits.xen.org. This vulnerability is uniquely identified as CVE-2021-28688. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1499 for this issue.

Applying a patch is able to eliminate this problem. The bugfix is ready for download at xenbits.xen.org.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.2

VulDB Base Score: 6.5
VulDB Temp Score: 6.2
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: Resource consumption
CWE: CWE-400 / CWE-404
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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: xenbits.xen.org

Timelineinfo

03/18/2021 🔍
04/01/2021 +13 days 🔍
04/01/2021 +0 days 🔍
04/07/2021 +6 days 🔍

Sourcesinfo

Advisory: XSA-371
Status: Confirmed

CVE: CVE-2021-28688 (🔍)
GCVE (CVE): GCVE-0-2021-28688
GCVE (VulDB): GCVE-100-172065

Entryinfo

Created: 04/01/2021 09:55
Updated: 04/07/2021 16:13
Changes: 04/01/2021 09:55 (34), 04/01/2021 09:56 (3), 04/07/2021 16:13 (1)
Complete: 🔍
Submitter: CSieberg
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #10188: CVE-2021-28688 / Denial of Service in Hypervizor (by CSieberg)

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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