CVE-2020-27749
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I. Basic Information for CVE-2020-27749
Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
A flaw was found in grub2 in versions prior to 2.06. Variable names present are expanded in the supplied command line into their corresponding variable contents, using a 1kB stack buffer for temporary storage, without sufficient bounds checking. If the function is called with a command line that references a variable with a sufficiently large payload, it is possible to overflow the stack buffer, corrupt the stack frame and control execution which could also circumvent Secure Boot protections. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
栈缓冲区溢出
Source: NVD (National Vulnerability Database)
Vulnerability Title
grub2 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
grub2是GNU社区的一款Linux系统引导程序。 grub2 存在缓冲区错误漏洞，该漏洞在grub_parser_split_cmdline中发现了堆栈缓冲区溢出漏洞。以下产品和版本受到影响：grub2 in versions prior to 2.06。
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 | grub 2.06 | - |
II. Public POCs for CVE-2020-27749
| # | POC Description | Source Link | Shenlong Link |
|---|
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- https://security.netapp.com/advisory/ntap-20220325-0001/x_refsource_CONFIRM
- https://bugzilla.redhat.com/show_bug.cgi?id=1899966x_refsource_MISC
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZWZ36QK4IKU6MWDWNOOWKPH3WXZBHT2R/vendor-advisoryx_refsource_FEDORA
- https://nvd.nist.gov/vuln/detail/CVE-2020-27749
Same Patch Batch · n/a · 2021-03-03 · 36 CVEs total
| CVE-2021-23347 | 4.7 MEDIUM | Cross-site Scripting (XSS) |
| CVE-2020-28597 | Epignosis EfrontPro 安全漏洞 | |
| CVE-2020-25632 | grub2 资源管理错误漏洞 | |
| CVE-2021-20225 | grub2 缓冲区错误漏洞 | |
| CVE-2021-20233 | grub2 缓冲区错误漏洞 | |
| CVE-2020-29047 | WordPress 代码问题漏洞 | |
| CVE-2021-22877 | Nextcloud 访问控制错误漏洞 | |
| CVE-2021-22878 | Nextcloud Server 跨站脚本漏洞 | |
| CVE-2020-8296 | Nextcloud 安全漏洞 | |
| CVE-2021-21978 | VMware View Planner 代码问题漏洞 | |
| CVE-2020-14372 | grub2 安全漏洞 | |
| CVE-2020-28591 | Slic3r 缓冲区错误漏洞 | |
| CVE-2020-13558 | WebKitGTK 资源管理错误漏洞 | |
| CVE-2021-22681 | Rockwell Automation RSLogix 500 和 Logix Designer Studio 5000 安全漏洞 | |
| CVE-2021-27839 | Online Invoicing System 注入漏洞 | |
| CVE-2021-27935 | AdGuard 安全漏洞 | |
| CVE-2021-27931 | LumisXP 代码问题漏洞 | |
| CVE-2021-27940 | openark orchestrator 跨站脚本漏洞 | |
| CVE-2021-22666 | FATEK FvDesigner 缓冲区错误漏洞 | |
| CVE-2021-27923 | Pillow 输入验证错误漏洞 |
Showing top 20 of 36 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
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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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Same weakness: CWE-121
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V. Comments for CVE-2020-27749
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