CVE-2021-3823— Path traversal vulnerability in Bitdefender GravitZone Update Server in relay mode
Quick assessment
Affected
Bitdefender GravityZone Update Server
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Bitdefender GravityZone Business是美国Bitdefender公司的一个扫描软件。 Bitdefender GravityZone存在路径遍历漏洞，该漏洞源于Bitdefender GravityZone的UpdateServer组件存在路径名到受限目录的错误限制(路径遍历)漏洞，攻击者可利用该漏洞可以在脆弱实例上执行任意代码。此问题影响:Bitdefender GravityZone之前的版本3.3.8.249。
Possible ATT&CK Techniques 3 AI
T1055 · Process Injection T1203 · Exploitation for Client Execution T1068 · Exploitation for Privilege Escalation
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I. Basic Information for CVE-2021-3823
Vulnerability Information
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Vulnerability Title
Path traversal vulnerability in Bitdefender GravitZone Update Server in relay mode
Source: CVE Program / CVE List V5
Vulnerability Description
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability in the UpdateServer component of Bitdefender GravityZone allows an attacker to execute arbitrary code on vulnerable instances. This issue affects: Bitdefender GravityZone versions prior to 3.3.8.249.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5
Vulnerability Title
Bitdefender GravityZone 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Bitdefender GravityZone Business是美国Bitdefender公司的一个扫描软件。 Bitdefender GravityZone存在路径遍历漏洞，该漏洞源于Bitdefender GravityZone的UpdateServer组件存在路径名到受限目录的错误限制(路径遍历)漏洞，攻击者可利用该漏洞可以在脆弱实例上执行任意代码。此问题影响:Bitdefender GravityZone之前的版本3.3.8.249。
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
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Bitdefender | GravityZone Update Server | unspecified ~ 3.3.8.249 | - |
|
II. Public POCs for CVE-2021-3823
| # | POC Description | Source Link | Shenlong Link |
|---|
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Other References for CVE-2021-3823 (1)
Same Patch Batch · Bitdefender · 2021-10-28 · 3 CVEs total
| CVE-2021-3576 | 7.8 HIGH | Privilege escalation via SeImpersonatePrivilege |
| CVE-2021-3579 | 7.8 HIGH | Incorrect Default Permissions vulnerability in bdservicehost.exe and Vulnerability.Scan.ex |
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V. Comments for CVE-2021-3823
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