Sitecore up to 8.2 Update-7 deserialization

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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9.0$0-$5k0.00

Summaryinfo

A vulnerability has been found in Sitecore up to 8.2 Update-7 and classified as critical. Affected is an unknown function. The manipulation leads to deserialization. This vulnerability is traded as CVE-2021-42237. It is possible to initiate the attack remotely. Furthermore, there is an exploit available.

Detailsinfo

A vulnerability was found in Sitecore up to 8.2 Update-7. It has been rated as critical. This issue affects an unknown part. The manipulation with an unknown input leads to a deserialization vulnerability. Using CWE to declare the problem leads to CWE-502. The product deserializes untrusted data without sufficiently verifying that the resulting data will be valid. Impacted is confidentiality, integrity, and availability.

The weakness was shared 11/05/2021. It is possible to read the advisory at blog.assetnote.io. The identification of this vulnerability is CVE-2021-42237 since 10/11/2021. Technical details are unknown but an exploit is available.

It is declared as attacked. The CISA Known Exploited Vulnerabilities Catalog lists this issue since 03/25/2022 with a due date of 04/15/2022:

Apply updates per vendor instructions.

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

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

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.0
VulDB Meta Temp Score: 9.0

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

NVD Base Score: 9.8
NVD Vector: 🔍

CNA Base Score: 9.8
CNA Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Deserialization
CWE: CWE-502 / CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Attacked

EPSS Score: 🔍
EPSS Percentile: 🔍

KEV Added: 🔍
KEV Due: 🔍
KEV Remediation: 🔍
KEV Ransomware: 🔍
KEV Notice: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

10/11/2021 🔍
11/05/2021 +25 days 🔍
11/05/2021 +0 days 🔍
02/03/2025 +1186 days 🔍

Sourcesinfo

Advisory: blog.assetnote.io
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2021-42237 (🔍)
GCVE (CVE): GCVE-0-2021-42237
GCVE (VulDB): GCVE-100-186119
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 11/05/2021 13:51
Updated: 02/03/2025 20:58
Changes: 11/05/2021 13:51 (36), 11/10/2021 03:54 (1), 04/24/2024 17:15 (26), 09/19/2024 18:13 (1), 02/03/2025 20:58 (28)
Complete: 🔍
Cache ID: 216::103

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

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