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CVE-2021-3716

Quick assessment

Affected
n/a nbdkit
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.

Libguestfs Nbdkit是Libguestfs社区的一个用于创建NBD（访问网络块设备的协议）服务端的应用软件。 Libguestfs Nbdkit 存在安全漏洞，攻击者可利用该漏洞通过Nbdkit的STARTTLS NBD OPT STRUCTURED REPLY Injection造成致命错误，以触发拒绝服务。

AI Predicted 6.5 Difficulty: Moderate EPSS 0.58% · P46
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I. Basic Information for CVE-2021-3716

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in nbdkit due to to improperly caching plaintext state across the STARTTLS encryption boundary. A MitM attacker could use this flaw to inject a plaintext NBD_OPT_STRUCTURED_REPLY before proxying everything else a client sends to the server, potentially leading the client to terminate the NBD session. The highest threat from this vulnerability is to system availability.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
通信信道中传输过程中消息完整性的不正确执行
Source: CVE Program / CVE List V5
Vulnerability Title
Libguestfs Nbdkit 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Libguestfs Nbdkit是Libguestfs社区的一个用于创建NBD（访问网络块设备的协议）服务端的应用软件。 Libguestfs Nbdkit 存在安全漏洞，攻击者可利用该漏洞通过Nbdkit的STARTTLS NBD OPT STRUCTURED REPLY Injection造成致命错误，以触发拒绝服务。
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
- nbdkit Affects nbdkit v1.12 through v1.26.4 | Fixedin nbdkit v1.26.5 -

II. Public POCs for CVE-2021-3716

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2021-3716

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Patches & Fixes for CVE-2021-3716 (2)

Vendor Advisories for CVE-2021-3716 (1)

Mailing List Discussions for CVE-2021-3716 (1)

Other References for CVE-2021-3716 (1)

Same Patch Batch · n/a · 2022-03-02 · 61 CVEs total

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CVE-2021-3667 Red Hat libvirt 安全漏洞
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CVE-2021-38268 Liferay Portal 安全漏洞
CVE-2022-22944 Vmware Workspace One Boxer 跨站脚本漏洞
CVE-2022-25045 Home Owners Collection Management System 信任管理问题漏洞
CVE-2022-25016 Home Owners Collection Management System 代码问题漏洞
CVE-2022-23953 HP PC 输入验证错误漏洞
CVE-2022-23954 HP PC 输入验证错误漏洞
CVE-2022-23955 HP PC 输入验证错误漏洞
CVE-2022-23958 HP PC 输入验证错误漏洞
CVE-2022-23957 HP PC 输入验证错误漏洞
CVE-2021-41001 Aruba AOS-CX 命令注入漏洞
CVE-2021-41000 Aruba AOS-CX 命令注入漏洞
CVE-2021-41002 Aruba AOS-CX 路径遍历漏洞
CVE-2021-41003 Aruba AOS-CX 跨站脚本漏洞

Showing top 20 of 61 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: nbdkit
Same vendor: n/a
Same weakness: CWE-924

V. Comments for CVE-2021-3716

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