|CVSS Meta Temp Score|
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|CTI Interest Score|
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A vulnerability was found in Google Chrome (Web Browser). It has been classified as critical. This affects some unknown processing of the component Site Isolation Handler. The manipulation with an unknown input leads to a privilege escalation vulnerability. CWE is classifying the issue as CWE-265. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:
Inappropriate implementation in Site isolation in Google Chrome prior to 89.0.4389.72 allowed a remote attacker to leak cross-origin data via a crafted HTML page.
The weakness was presented 03/04/2021. The advisory is shared at chromereleases.googleblog.com. This vulnerability is uniquely identified as CVE-2021-21175 since 12/21/2020. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 03/28/2021). It is expected to see the exploit prices for this product increasing in the near future.
Upgrading to version 89.0.4389.72 eliminates this vulnerability.
CVSSv3VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.1
VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔒
VulDB Reliability: 🔍
NVD Base Score: 6.5
NVD Vector: 🔒
VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍
NVD Base Score: 🔒
ExploitingClass: Privilege escalation
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒
Threat IntelligenceThreat: 🔍
0-Day Time: 🔒
Upgrade: Chrome 89.0.4389.72
Timeline12/21/2020 CVE assigned
03/04/2021 +73 days Advisory disclosed
03/04/2021 +0 days VulDB entry created
03/28/2021 +24 days VulDB last update
CVE: CVE-2021-21175 (🔒)
EntryCreated: 03/04/2021 05:53 PM
Updated: 03/28/2021 08:49 AM
Changes: (18) 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 vulnerability_cvss3_meta_basescore vulnerability_cvss3_meta_tempscore vulnerability_cvss2_nvd_basescore vulnerability_cvss3_nvd_basescore
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