Wind River VxWorks calloc the memory corruption

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CVSS Meta Temp Score
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CTI Interest Score
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7.3$0-$5k0.07

A vulnerability, which was classified as critical, has been found in Wind River VxWorks (affected version not known). Affected by this issue is the function calloc. The manipulation of the argument the with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. Impacted is confidentiality, integrity, and availability. CVE summarizes:

In Wind River VxWorks, memory allocator has a possible overflow in calculating the memory block's size to be allocated by calloc(). As a result, the actual memory allocated is smaller than the buffer size specified by the arguments, leading to memory corruption.

The weakness was published 02/03/2021. The advisory is available at support2.windriver.com. This vulnerability is handled as CVE-2020-28895 since 11/17/2020. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 02/23/2021).

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

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

VulDB Base Score: 7.3
VulDB Temp Score: 7.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfoedit

Class: Memory corruption
CWE: CWE-119
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat: 🔍
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Countermeasuresinfoedit

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfoedit

11/17/2020 CVE assigned
02/03/2021 +78 days Advisory disclosed
02/03/2021 +0 days VulDB entry created
02/23/2021 +20 days VulDB last update

Sourcesinfoedit

Advisory: support2.windriver.com
Status: Not defined

CVE: CVE-2020-28895 (🔒)

Entryinfoedit

Created: 02/03/2021 07:18 PM
Updated: 02/23/2021 09:41 AM
Changes: (2) source_cve_assigned source_cve_nvd_summary
Complete: 🔍

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