CVE-2021-3981
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I. Basic Information for CVE-2021-3981
Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
A flaw in grub2 was found where its configuration file, known as grub.cfg, is being created with the wrong permission set allowing non privileged users to read its content. This represents a low severity confidentiality issue, as those users can eventually read any encrypted passwords present in grub.cfg. This flaw affects grub2 2.06 and previous versions. This issue has been fixed in grub upstream but no version with the fix is currently released.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
缺省权限不正确
Source: NVD (National Vulnerability Database)
Vulnerability Title
grub2 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
grub2是美国GNU社区的一款Linux系统引导程序。 grub2存在安全漏洞，该漏洞源于 grub.cfg 中的权限不正确，允许非特权用户读取文件内容。
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 |
|---|---|---|---|---|
| - | grub2 | grub2 2.06 and previous versions | - |
II. Public POCs for CVE-2021-3981
| # | POC Description | Source Link | Shenlong Link |
|---|
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No public POC found.
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- https://bugzilla.redhat.com/show_bug.cgi?id=2024170x_refsource_MISC
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AI776L35DDYPCSAAJPJM3ZEQYSFZHBJX/vendor-advisoryx_refsource_FEDORA
- https://nvd.nist.gov/vuln/detail/CVE-2021-3981
Same Patch Batch · n/a · 2022-03-08 · 9 CVEs total
| CVE-2022-0856 | libcaca 数字错误漏洞 | |
| CVE-2021-4095 | Linux kernel 代码问题漏洞 | |
| CVE-2022-0516 | Linux kernel 缓冲区错误漏洞 | |
| CVE-2021-3698 | Cockpit 信任管理问题漏洞 | |
| CVE-2022-25225 | Network Olympus SQL注入漏洞 | |
| CVE-2022-24286 | Acer QuickAccess 授权问题漏洞 | |
| CVE-2022-24285 | Acer Care Center 授权问题漏洞 | |
| CVE-2021-28488 | Ericsson Network Manage安全漏洞 |
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Grub2: missing unregister call for gettext command may lead - CVE-2025-61661
Grub2: grub2: out-of-bounds write via malicious usb device
Same vendor: n/a
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V. Comments for CVE-2021-3981
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