CVE-2021-46705— grub2-once uses fixed file name in /var/tmp
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I. Basic Information for CVE-2021-46705
Vulnerability Information
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Vulnerability Title
grub2-once uses fixed file name in /var/tmp
Source: NVD (National Vulnerability Database)
Vulnerability Description
A Insecure Temporary File vulnerability in grub-once of grub2 in SUSE Linux Enterprise Server 15 SP4, openSUSE Factory allows local attackers to truncate arbitrary files. This issue affects: SUSE Linux Enterprise Server 15 SP4 grub2 versions prior to 2.06-150400.7.1. SUSE openSUSE Factory grub2 versions prior to 2.06-18.1.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
Source: NVD (National Vulnerability Database)
Vulnerability Type
不安全的临时文件
Source: NVD (National Vulnerability Database)
Vulnerability Title
SUSE Linux Enterprise Server 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
SUSE Linux Enterprise Server是德国SUSE公司的一套企业服务器版Linux操作系统。 SUSE Linux Enterprise Server 15 SP4 中 grub2 的 grub-once 中存在安全漏洞，该漏洞源于 openSUSE Factory 允许本地攻击者截断任意文件。此问题影响：2.06-150400.7.1 之前的 SUSE Linux Enterprise Server 15 SP4 grub2 版本。SUSE openSUSE Factory grub
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 |
|---|---|---|---|---|
| SUSE | SUSE Linux Enterprise Server 15 SP4 | grub2 ~ 2.06-150400.7.1 | - | |
| SUSE | openSUSE Factory | grub2 ~ 2.06-18.1 | - |
II. Public POCs for CVE-2021-46705
| # | POC Description | Source Link | Shenlong Link |
|---|
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- https://bugzilla.suse.com/show_bug.cgi?id=1190474x_refsource_CONFIRM
- https://nvd.nist.gov/vuln/detail/CVE-2021-46705
IV. Related Vulnerabilities
Same vendor: SUSE
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Same weakness: CWE-377
V. Comments for CVE-2021-46705
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