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I. Basic Information for CVE-2021-21551
Vulnerability Information

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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
Dell dbutil_2_3.sys driver contains an insufficient access control vulnerability which may lead to escalation of privileges, denial of service, or information disclosure. Local authenticated user access is required.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
无充分访问控制条件下暴露IOCTL
Source: NVD (National Vulnerability Database)
Vulnerability Title
Dell dbutil Driver 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Dell dbutil Driver是美国戴尔(Dell)公司的一个应用软件。提供了戴尔公司设备的一个驱动程序。 Dell dbutil Driver 存在安全漏洞,该漏洞源于戴尔dbutil驱动程序dbutil 2 .sys中不正确的访问限制。以下产品及版本受到影响:DBUtil: 2.3 。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
VendorProductAffected VersionsCPESubscribe
Delldbutil 2.3 -
II. Public POCs for CVE-2021-21551
#POC DescriptionSource LinkShenlong Link
1Exploit to SYSTEM for CVE-2021-21551https://github.com/waldo-irc/CVE-2021-21551POC Details
2Nonehttps://github.com/ch3rn0byl/CVE-2021-21551POC Details
3Script to patch your domain computers about the CVE-2021-21551. Privesc on machines that have the driver dbutil_2_3.sys, installed by some DELL tools (BIOS updater, SupportAssist...)https://github.com/arnaudluti/PS-CVE-2021-21551POC Details
4arbitrary kernel read/write in dbutil_2_3.sys, Proof of Concept Local Privilege Escalation to nt authority/systemhttps://github.com/mathisvickie/CVE-2021-21551POC Details
5An extended proof-of-concept for the CVE-2021-21551 Dell ‘dbutil_2_3.sys’ Kernel Exploithttps://github.com/mzakocs/CVE-2021-21551-POCPOC Details
6Dell Driver EoP (CVE-2021-21551)https://github.com/ihack4falafel/Dell-Driver-EoP-CVE-2021-21551POC Details
7Cobalt Strike (CS) Beacon Object File (BOF) foundation for kernel exploitation using CVE-2021-21551.https://github.com/tijme/kernel-miiPOC Details
8Dell Driver EoP (CVE-2021-21551)https://github.com/nanabingies/CVE-2021-21551POC Details
9Dell dbutil_2_3.sys driver exploithttps://github.com/houseofxyz/CVE-2021-21551POC Details
10Proof of concept exploit for CVE-2021-21551https://github.com/Eap2468/CVE-2021-21551POC Details
11Exploit implementation for CVE-2021-21551https://github.com/IlanDudnik/CVE-2021-21551POC Details
12Nonehttps://github.com/luke0x90/CVE-2021-21551POC Details
13This repo contain a PoC I have done when blind analysis the dbutil_2_3.sys driver for vulnerability. This was created by personal analysis without looking at writeups or even know which CVE exist in this driver. All the knowledge I have is that this driver is vulnerable in some way.https://github.com/bengabay1994/cve-2021-21551-PoCPOC Details
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III. Intelligence Information for CVE-2021-21551
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