QEMU megasas-gen2 SCSI Host Bus Adapter Emulation hw/scsi/megasas.c megasas_command_cancelled denial of service

CVSS Meta Temp Score
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CTI Interest Score
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3.5$0-$5k0.00

Summaryinfo

A vulnerability identified as problematic has been detected in QEMU. Impacted is the function megasas_command_cancelled of the file hw/scsi/megasas.c of the component megasas-gen2 SCSI Host Bus Adapter Emulation. Performing a manipulation results in denial of service. This vulnerability is cataloged as CVE-2020-35503. There is no exploit available.

Detailsinfo

A vulnerability, which was classified as problematic, was found in QEMU (Virtualization Software) (affected version not known). This affects the function megasas_command_cancelled of the file hw/scsi/megasas.c of the component megasas-gen2 SCSI Host Bus Adapter Emulation. The manipulation with an unknown input leads to a denial of service vulnerability. CWE is classifying the issue as CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. This is going to have an impact on availability.

The weakness was shared 01/13/2021. It is possible to read the advisory at bugzilla.redhat.com. This vulnerability is uniquely identified as CVE-2020-35503. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 232173 (Linux Distros Unpatched Vulnerability : CVE-2020-35503), 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 (232173). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.5
VulDB Meta Temp Score: 3.5

VulDB Base Score: 3.5
VulDB Temp Score: 3.5
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: Denial of service
CWE: CWE-404
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: 232173
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2020-35503

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

12/17/2020 🔍
01/13/2021 +27 days 🔍
01/13/2021 +0 days 🔍
03/06/2025 +1513 days 🔍

Sourcesinfo

Product: qemu.org

Advisory: bugzilla.redhat.com
Status: Not defined

CVE: CVE-2020-35503 (🔍)
GCVE (CVE): GCVE-0-2020-35503
GCVE (VulDB): GCVE-100-167799

Entryinfo

Created: 01/13/2021 13:52
Updated: 03/06/2025 18:54
Changes: 01/13/2021 13:52 (37), 02/13/2021 01:39 (1), 03/06/2025 18:54 (16)
Complete: 🔍
Submitter: CSieberg
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #5842: CVE-2020-35503 - NULL Pointer in QEMU (by CSieberg)

Be aware that VulDB is the high quality source for vulnerability data.

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