CVE-2021-26910
Quick assessment
Affected
n/a n/a
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.
Firejail是一款使用C语言编写的SUID沙箱程序。 Firejail 0.9.64.4之前的版本存在访问控制错误漏洞，该漏洞源于在stat操作和OverlayFS mount操作之间存在totou竞争条件，允许攻击者绕过预期的访问限制。
Possible ATT&CK Techniques 1 AI
T1611 · Escape to Host
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I. Basic Information for CVE-2021-26910
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
Firejail before 0.9.64.4 allows attackers to bypass intended access restrictions because there is a TOCTOU race condition between a stat operation and an OverlayFS mount operation.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Firejail 访问控制错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Firejail是一款使用C语言编写的SUID沙箱程序。 Firejail 0.9.64.4之前的版本存在访问控制错误漏洞，该漏洞源于在stat操作和OverlayFS mount操作之间存在totou竞争条件，允许攻击者绕过预期的访问限制。
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 |
|---|---|---|---|---|
| - | n/a | n/a | - |
|
II. Public POCs for CVE-2021-26910
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2021-26910 (1)
Vendor Advisories for CVE-2021-26910 (2)
Mailing List Discussions for CVE-2021-26910 (1)
Security Blog Posts for CVE-2021-26910 (1)
Other References for CVE-2021-26910 (2)
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https://github.com/netblue30/firejail/releases/tag/0.9.64.4 x_refsource_MISC
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https://unparalleled.eu/publications/2021/advisory-unpar-2021-0.txt x_refsource_MISC
Same Patch Batch · n/a · 2021-02-08 · 61 CVEs total
| CVE-2020-7786 | 9.8 CRITICAL | Command Injection |
| CVE-2020-7782 | 9.8 CRITICAL | Command Injection |
| CVE-2020-7785 | 9.8 CRITICAL | Command Injection |
| CVE-2021-25169 | HPE Apollo 70 缓冲区错误漏洞 | |
| CVE-2020-11920 | Svakom Siime Eye 操作系统命令注入漏洞 | |
| CVE-2020-26052 | Phpgurukul Online Marriage Registration System 跨站脚本漏洞 | |
| CVE-2021-3293 | Emlog 路径遍历漏洞 | |
| CVE-2020-16629 | PHPOK SQL注入漏洞 | |
| CVE-2020-26051 | Oliver Lando College-Management-System-Php SQL注入漏洞 | |
| CVE-2021-25142 | HPE Apollo 安全漏洞 | |
| CVE-2021-25835 | KamiD Cosmos Network Ethermint 安全漏洞 | |
| CVE-2021-25168 | HPE Apollo 安全漏洞 | |
| CVE-2021-25170 | HPE Apollo 70 缓冲区错误漏洞 | |
| CVE-2021-25837 | Cosmos Network Ethermint 安全漏洞 | |
| CVE-2021-25171 | HPE Apollo 70 缓冲区错误漏洞 | |
| CVE-2021-26571 | HPE Apollo 70 资源管理错误漏洞 | |
| CVE-2021-26570 | HPE Apollo 70 安全漏洞 | |
| CVE-2021-26572 | HPE Apollo 安全漏洞 | |
| CVE-2021-25172 | HPE Apollo 70 命令命令注入漏洞 | |
| CVE-2021-26573 | HPE Apollo 安全漏洞 |
Showing top 20 of 61 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
V. Comments for CVE-2021-26910
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