Qognify Ocularis 5.9.0.395 EventCoordinator Endpoint deserialization

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CVSS Meta Temp Score
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9.8$0-$5k0.00

A vulnerability was found in Qognify Ocularis 5.9.0.395. It has been declared as very critical. This vulnerability affects an unknown function of the component EventCoordinator Endpoint. The manipulation with an unknown input leads to a privilege escalation vulnerability. The CWE definition for the vulnerability is CWE-502. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Qognify Ocularis 5.9.0.395. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of serialized objects provided to the EventCoordinator endpoint. The issue results from the lack of proper validation of user-supplied data, which can result in deserialization of untrusted data. An attacker can leverage this vulnerability to execute code in the context of SYSTEM. Was ZDI-CAN-11257.

The weakness was disclosed 02/12/2021. The advisory is shared for download at zerodayinitiative.com. This vulnerability was named CVE-2020-27868 since 10/27/2020. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 02/28/2021).

Applying a patch is able to eliminate this problem. The bugfix is ready for download at onssi.ftpstream.com.

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VulDB Meta Base Score: 9.8
VulDB Meta Temp Score: 9.8

VulDB Base Score: 9.8
VulDB Temp Score: 9.8
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔒

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VulDB Base Score: 🔒
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Exploitinginfoedit

Class: Privilege escalation
CWE: CWE-502
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

Price Prediction: 🔍
Current Price Estimation: 🔒

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Countermeasuresinfoedit

Recommended: Patch
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0-Day Time: 🔒

Patch: onssi.ftpstream.com

Timelineinfoedit

10/27/2020 CVE assigned
02/12/2021 +108 days Advisory disclosed
02/12/2021 +0 days VulDB entry created
02/28/2021 +16 days VulDB last update

Sourcesinfoedit

Advisory: zerodayinitiative.com
Status: Not defined

CVE: CVE-2020-27868 (🔒)

Entryinfoedit

Created: 02/12/2021 09:41 AM
Updated: 02/28/2021 11:32 AM
Changes: (17) vulnerability_cvss3_nvd_av vulnerability_cvss3_nvd_ac vulnerability_cvss3_nvd_pr vulnerability_cvss3_nvd_ui vulnerability_cvss3_nvd_s vulnerability_cvss3_nvd_c vulnerability_cvss3_nvd_i vulnerability_cvss3_nvd_a vulnerability_cvss2_nvd_av vulnerability_cvss2_nvd_ac vulnerability_cvss2_nvd_au vulnerability_cvss2_nvd_ci vulnerability_cvss2_nvd_ii vulnerability_cvss2_nvd_ai source_cve_cna vulnerability_cvss2_nvd_basescore vulnerability_cvss3_nvd_basescore
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