CVE-2020-17144: Microsoft Exchange Remote Code Execution Vulnerability

Overview

Severity

High (CVSS 8.4)

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H/E:P/RL:O/RC:C

Category

Remote Code Execution

Exploit Status

Not Exploited

Exploitation Likelihood

More Likely

Patch Tuesday

2020-Dec

Released

2020-12-08

EPSS Score

92.00% (percentile: 99.7%)

CISA KEV

Listed — due 2022-05-03

FAQ

What can cause this vulnerability? The vulnerability occurs due to improper validation of cmdlet arguments. Does the attacker need to be in an authenticated role in the Exchange Server? Yes, the attacker must be authenticated.

Known Exploits (5)

• Microsoft Exchange Server Remote Code Execution Vulnerability — added 2021-01-24T10:44:29+08:00
• Microsoft Exchange Server Remote Code Execution Vulnerability — added 2021-01-24T10:44:29+08:00
• Microsoft Exchange Server Remote Code Execution Vulnerability — added 2021-01-20T09:20:36+08:00
• Microsoft Exchange Server Remote Code Execution Vulnerability — added 2020-12-09T20:57:16Z
• Microsoft Exchange Server Remote Code Execution Vulnerability — added 2020-12-09T10:30:16Z

Detection & Weaponization (1 sources)

Maturity: Exploit

• GitHub PoC: 2 repositories

Affected Products (1)

Server Software

• Microsoft Exchange Server 2010 Service Pack 3 Update Rollup 31

Security Updates (1)

• 4593467

Acknowledgments

zcgonvh from A-TEAM of Legendsec at Qi'anxin Group

Revision History

• 2020-12-08: Information published.