Microsoft Exchange Server 2013 CU23/2016 CU18/2016 CU19/2019 CU7/2019 CU8 Remote Code Execution
|CVSS Meta Temp Score|
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|Current Exploit Price (≈)|
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|CTI Interest Score|
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A vulnerability classified as critical has been found in Microsoft Exchange Server 2013 CU23/2016 CU18/2016 CU19/2019 CU7/2019 CU8 (Groupware Software). This is going to have an impact on confidentiality, integrity, and availability.
The weakness was published 03/02/2021 as confirmed security guidance (Website). It is possible to read the advisory at portal.msrc.microsoft.com. This vulnerability is uniquely identified as CVE-2021-27065 since 02/10/2021. 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. Technical details are unknown but a public exploit is available.
A public exploit has been developed by Jang (testanull) in Python and been published 2 weeks after the advisory. It is declared as functional. The exploit is shared for download at testbnull.medium.com. We expect the 0-day to have been worth approximately $25k-$100k.
Applying a patch is able to eliminate this problem. A possible mitigation has been published immediately after the disclosure of the vulnerability.
VideoYoutube: Not available anymore
CVSSv3VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 6.8
VulDB Base Score: 6.3
VulDB Temp Score: 5.9
VulDB Vector: 🔒
VulDB Reliability: 🔍
Vendor Base Score (Microsoft): 7.8
Vendor Vector (Microsoft): 🔒
NVD Base Score: 7.8
NVD Vector: 🔒
VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍
NVD Base Score: 🔒
Author: Jang (testanull)
Programming Language: 🔒
Price Prediction: 🔍
Current Price Estimation: 🔒
Threat IntelligenceThreat: 🔍
Reaction Time: 🔒
0-Day Time: 🔒
Exposure Time: 🔒
Exploit Delay Time: 🔍
Timeline02/10/2021 CVE assigned
03/02/2021 +20 days Advisory disclosed
03/02/2021 +0 days Countermeasure disclosed
03/03/2021 +0 days VulDB entry created
03/11/2021 +7 days Exploit disclosed
03/14/2021 +3 days VulDB last update
CVE: CVE-2021-27065 (🔒)
scip Labs: https://www.scip.ch/en/?labs.20161013
EntryCreated: 03/03/2021 08:26 AM
Updated: 03/14/2021 12:14 PM
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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