CVE-2021-43057
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.
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 5.14.8之前版本存在安全漏洞，该漏洞源于selinux_ptrace_traceme（又名 PTRACE_TRACEME 的 SELinux 处理程序）中存在释放后重用的问题。本地攻击者可利用该漏洞进行内存破坏攻击和权限提升。
Possible ATT&CK Techniques 1 AI
T1068 · Exploitation for Privilege Escalation
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I. Basic Information for CVE-2021-43057
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
An issue was discovered in the Linux kernel before 5.14.8. A use-after-free in selinux_ptrace_traceme (aka the SELinux handler for PTRACE_TRACEME) could be used by local attackers to cause memory corruption and escalate privileges, aka CID-a3727a8bac0a. This occurs because of an attempt to access the subjective credentials of another task.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 资源管理错误漏洞
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 5.14.8之前版本存在安全漏洞，该漏洞源于selinux_ptrace_traceme（又名 PTRACE_TRACEME 的 SELinux 处理程序）中存在释放后重用的问题。本地攻击者可利用该漏洞进行内存破坏攻击和权限提升。
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-2021-43057
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2021-43057 (1)
Vendor Advisories for CVE-2021-43057 (1)
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https://security.netapp.com/advisory/ntap-20211125-0001/ x_refsource_CONFIRM
Other References for CVE-2021-43057 (2)
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https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14.8 x_refsource_MISC
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https://bugs.chromium.org/p/project-zero/issues/detail?id=2229 x_refsource_MISC
Same Patch Batch · n/a · 2021-10-28 · 19 CVEs total
| CVE-2021-22096 | Vmware Spring Framework 安全漏洞 | |
| CVE-2020-23549 | IrfanView 安全漏洞 | |
| CVE-2020-23546 | IrfanView 安全漏洞 | |
| CVE-2021-36551 | Tiki Wiki 跨站脚本漏洞 | |
| CVE-2021-36550 | Tiki Wiki 跨站脚本漏洞 | |
| CVE-2021-36548 | Monstra CMS 代码问题漏洞 | |
| CVE-2021-36547 | Mara CMS 代码问题漏洞 | |
| CVE-2020-25422 | Mara CMS 跨站脚本漏洞 | |
| CVE-2021-22097 | Spring AMQP 代码问题漏洞 | |
| CVE-2021-43056 | Linux kernel 安全漏洞 | |
| CVE-2021-22047 | VMware Spring Security 安全漏洞 | |
| CVE-2021-22044 | Spring Cloud OpenFeign 安全漏洞 | |
| CVE-2021-41728 | Sourcecodester News247 Cms 跨站脚本漏洞 | |
| CVE-2020-22312 | Hznuoj 跨站脚本漏洞 | |
| CVE-2021-37254 | M-Files Web 授权问题漏洞 | |
| CVE-2021-37915 | Grandstream Ht801 安全漏洞 | |
| CVE-2021-37748 | Grandstream Ht801 缓冲区错误漏洞 | |
| CVE-2019-19810 | ZOOM Zoom Call Recording 代码问题漏洞 |
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V. Comments for CVE-2021-43057
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