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CVE-2021-33910

Quick assessment

Affected
n/a n/a
Exploitation
High exploitation probability; assess promptly
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

systemd是德国Lennart Poettering个人开发者的一款基于Linux的系统和服务管理器。该产品兼容了SysV和LSB的启动脚本，且提供了一个用来表示系统服务间依赖关系的框架。 systemd 220到248版本存在安全漏洞，该漏洞源于basic/unit-name.c 的内存分配具有过大的大小值。本地攻击者可利用该漏洞将文件系统挂载在很长的路径上，通过在堆栈中分配很大的空间使systemd和整个系统崩溃。

AI Predicted 4.3 Difficulty: Easy EPSS 8.79% · P95

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 1

VendorProduct Version RangeStatus
n/a n/a n/a affected
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I. Basic Information for CVE-2021-33910

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
basic/unit-name.c in systemd prior to 246.15, 247.8, 248.5, and 249.1 has a Memory Allocation with an Excessive Size Value (involving strdupa and alloca for a pathname controlled by a local attacker) that results in an operating system crash.
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
systemd 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
systemd是德国Lennart Poettering个人开发者的一款基于Linux的系统和服务管理器。该产品兼容了SysV和LSB的启动脚本，且提供了一个用来表示系统服务间依赖关系的框架。 systemd 220到248版本存在安全漏洞，该漏洞源于basic/unit-name.c 的内存分配具有过大的大小值。本地攻击者可利用该漏洞将文件系统挂载在很长的路径上，通过在堆栈中分配很大的空间使systemd和整个系统崩溃。
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-2021-33910

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2021-33910

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Patches & Fixes for CVE-2021-33910 (6)

Vendor Advisories for CVE-2021-33910 (4)

Mailing List Discussions for CVE-2021-33910 (6)

Same Patch Batch · n/a · 2021-07-20 · 26 CVEs total

CVE-2021-35054 Minecraft 路径遍历漏洞
CVE-2021-36980 Open vSwitch 资源管理错误漏洞
CVE-2021-36978 QPDF 缓冲区错误漏洞
CVE-2021-3246 libsndfile 缓冲区错误漏洞
CVE-2019-25051 GNU Aspell 缓冲区错误漏洞
CVE-2019-25050 GDAL 缓冲区错误漏洞
CVE-2020-36431 Unicorn Engine 缓冲区错误漏洞
CVE-2020-36430 libass 缓冲区错误漏洞
CVE-2020-36429 open62541 缓冲区错误漏洞
CVE-2020-36428 MAT File I/O Library 缓冲区错误漏洞
CVE-2021-36979 Unicorn Engine 缓冲区错误漏洞
CVE-2021-36977 MAT File I/O Library 缓冲区错误漏洞
CVE-2021-36976 libarchive 资源管理错误漏洞
CVE-2021-36230 HashiCorp Terraform 授权问题漏洞
CVE-2021-27021 Puppet SQL注入漏洞
CVE-2020-15660 geckodriver 跨站请求伪造漏洞
CVE-2021-27517 Foxit PDF SDK For Web 跨站脚本漏洞
CVE-2021-27338 Faraday Edge 跨站脚本漏洞
CVE-2020-35427 Teachers Record Management System SQL注入漏洞
CVE-2021-33909 Linux kernel 输入验证错误漏洞

Showing top 20 of 26 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: n/a
Same vendor: n/a