CVE-2021-26843
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.
sthttpd是ACME实验室的一款轻量级的开源Web服务器。 sthttpd through 2.27.1 存在安全漏洞，该漏洞源于传递给memcpy的内存范围重叠，导致拒绝服务。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-26843
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
An issue was discovered in sthttpd through 2.27.1. On systems where the strcpy function is implemented with memcpy, the de_dotdot function may cause a Denial-of-Service (daemon crash) due to overlapping memory ranges being passed to memcpy. This can triggered with an HTTP GET request for a crafted filename. NOTE: this is similar to CVE-2017-10671, but occurs in a different part of the de_dotdot function.
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
sthttpd 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
sthttpd是ACME实验室的一款轻量级的开源Web服务器。 sthttpd through 2.27.1 存在安全漏洞，该漏洞源于传递给memcpy的内存范围重叠，导致拒绝服务。
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-2021-26843
| # | POC Description | Source Link | Shenlong Link |
|---|
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Other References for CVE-2021-26843 (1)
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https://github.com/blueness/sthttpd/issues/14 x_refsource_MISC
Same Patch Batch · n/a · 2021-02-07 · 6 CVEs total
| CVE-2021-26754 | WordPress SQL注入漏洞 | |
| CVE-2021-22161 | OpenWrt 安全漏洞 | |
| CVE-2020-36243 | OpenEMR 操作系统命令注入漏洞 | |
| CVE-2020-36242 | python-cryptography 输入验证错误漏洞 | |
| CVE-2021-3122 | NCR Command Center Agent 操作系统命令注入漏洞 |
IV. Related Vulnerabilities
V. Comments for CVE-2021-26843
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