CVE-2021-3635
Quick assessment
Affected
n/a kernel
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.
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel netfilter存在安全漏洞，该漏洞具有root权限(CAP SYS ADMIN)的用户在发出netfilter netflow命令时能够使系统陷入瘫痪。
Possible ATT&CK Techniques 1 AI
T1055.013 · Process Doppelgänging
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I. Basic Information for CVE-2021-3635
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in the Linux kernel netfilter implementation in versions prior to 5.5-rc7. A user with root (CAP_SYS_ADMIN) access is able to panic the system when issuing netfilter netflow commands.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
内存缓冲区边界内操作的限制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel netfilter存在安全漏洞，该漏洞具有root权限(CAP SYS ADMIN)的用户在发出netfilter netflow命令时能够使系统陷入瘫痪。
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 |
|---|---|---|---|---|
| - | kernel | kernel 5.5-rc7 | - |
|
II. Public POCs for CVE-2021-3635
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2021-3635 (1)
-
https://bugzilla.redhat.com/show_bug.cgi?id=1976946 x_refsource_MISC
Same Patch Batch · n/a · 2021-08-13 · 57 CVEs total
| CVE-2021-31399 | 4.6 MEDIUM | 2N Access Unit 信任管理问题漏洞 |
| CVE-2020-18757 | MAC1100 PLC 安全漏洞 | |
| CVE-2021-21830 | AT&T Labs Xmill 缓冲区错误漏洞 | |
| CVE-2021-21812 | AT&T Labs Xmill 缓冲区错误漏洞 | |
| CVE-2020-21066 | Bento4 缓冲区错误漏洞 | |
| CVE-2021-21829 | AT&T Labs Xmill 缓冲区错误漏洞 | |
| CVE-2021-21814 | AT&T Labs Xmill 参数注入漏洞 | |
| CVE-2021-36788 | TYPO3 跨站脚本漏洞 | |
| CVE-2020-18759 | MAC1100 PLC 信息泄露漏洞 | |
| CVE-2020-18758 | MAC1100 PLC 命令注入漏洞 | |
| CVE-2021-36786 | TYPO3 信息泄露漏洞 | |
| CVE-2020-18756 | MAC1100 PLC 缓冲区错误漏洞 | |
| CVE-2020-18754 | MAC1100 PLC 信息泄露漏洞 | |
| CVE-2020-18753 | MAC1100 PLC 安全漏洞 | |
| CVE-2021-36792 | TYPO3 安全漏洞 | |
| CVE-2021-36791 | TYPO3 信息泄露漏洞 | |
| CVE-2021-36790 | TYPO3 跨站脚本漏洞 | |
| CVE-2021-36789 | TYPO3 SQL注入漏洞 | |
| CVE-2021-36380 | Sunhillo SureLine 操作系统命令注入漏洞 | |
| CVE-2021-37028 | HG8045Q 操作系统命令注入漏洞 |
Showing top 20 of 57 CVEs. View all on vendor page → →
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V. Comments for CVE-2021-3635
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