Microsoft Exchange Server 2016 CU18/2016 CU19/2019 CU7/2019 CU8 privilege escalation

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
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CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.7$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in Microsoft Exchange Server 2016 CU18/2016 CU19/2019 CU7/2019 CU8. This affects an unknown function. Performing a manipulation results in an unknown weakness. This vulnerability is known as CVE-2021-24085. Remote exploitation of the attack is possible. Furthermore, an exploit is available. Applying a patch is the recommended action to fix this issue.

Detailsinfo

A vulnerability was found in Microsoft Exchange Server 2016 CU18/2016 CU19/2019 CU7/2019 CU8 (Groupware Software). It has been classified as critical. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was published 02/09/2021 as confirmed security guidance (Website). The advisory is shared at portal.msrc.microsoft.com. This vulnerability is uniquely identified as CVE-2021-24085. 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 Steven Seeley in Python and been published 6 days after the advisory. The exploit is shared for download at github.com. It is declared as proof-of-concept. 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.

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 5.7

VulDB Base Score: 6.5
VulDB Temp Score: 5.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

Vendor Base Score (Microsoft): 6.5
Vendor Vector (Microsoft): 🔍

CVSSv2info

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

Exploitinginfo

Class: Privilege escalation
CWE: Unknown
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: Steven Seeley
Programming Language: 🔍
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍
Exploit Delay Time: 🔍

Timelineinfo

01/13/2021 🔍
02/09/2021 +27 days 🔍
02/09/2021 +0 days 🔍
02/09/2021 +0 days 🔍
02/15/2021 +5 days 🔍
02/26/2021 +11 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: portal.msrc.microsoft.com
Status: Confirmed

CVE: CVE-2021-24085 (🔍)
GCVE (CVE): GCVE-0-2021-24085
GCVE (VulDB): GCVE-100-169485
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 02/09/2021 21:30
Updated: 02/26/2021 06:49
Changes: 02/09/2021 21:30 (34), 02/09/2021 21:34 (18), 02/15/2021 19:27 (9), 02/26/2021 06:49 (1)
Complete: 🔍
Committer: misc
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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