CVE-2021-34549
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.
Arch Linux是Arch开源的一个应用系统。一个轻量级且灵活的Linux®发行版，试图使它保持简单。 Arch Linux 存在资源管理错误漏洞，该漏洞源于naive的无密钥散列函数中的内部资源管理不当。远程攻击者可利用该漏洞使用选定的电路id构建电路，从而产生冲突，使哈希表效率低下，导致拒绝服务。
Possible ATT&CK Techniques 1 AI
T1496 · Resource Hijacking
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I. Basic Information for CVE-2021-34549
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
An issue was discovered in Tor before 0.4.6.5, aka TROVE-2021-005. Hashing is mishandled for certain retrieval of circuit data. Consequently. an attacker can trigger the use of an attacker-chosen circuit ID to cause algorithm inefficiency.
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
Arch Linux 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Arch Linux是Arch开源的一个应用系统。一个轻量级且灵活的Linux®发行版，试图使它保持简单。 Arch Linux 存在资源管理错误漏洞，该漏洞源于naive的无密钥散列函数中的内部资源管理不当。远程攻击者可利用该漏洞使用选定的电路id构建电路，从而产生冲突，使哈希表效率低下，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 | - |
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II. Public POCs for CVE-2021-34549
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2021-34549 (1)
Security Blog Posts for CVE-2021-34549 (1)
-
https://blog.torproject.org/node/2041 x_refsource_CONFIRM
Other References for CVE-2021-34549 (1)
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https://gitlab.torproject.org/tpo/core/tor/-/issues/40391 x_refsource_MISC
Same Patch Batch · n/a · 2021-06-29 · 28 CVEs total
| CVE-2021-23400 | 6.3 MEDIUM | HTTP Header Injection |
| CVE-2021-20102 | Machform 跨站请求伪造漏洞 | |
| CVE-2021-33503 | urllib3 资源管理错误漏洞 | |
| CVE-2021-34548 | Tor 信息泄露漏洞 | |
| CVE-2021-34550 | Tor 缓冲区错误漏洞 | |
| CVE-2021-31160 | ZOHO ManageEngine ServiceDesk Plus 安全漏洞 | |
| CVE-2021-31530 | ZOHO ManageEngine ServiceDesk Plus 信息泄露漏洞 | |
| CVE-2021-31531 | ZOHO ManageEngine ServiceDesk Plus 代码问题漏洞 | |
| CVE-2021-34824 | Istio 权限许可和访问控制问题漏洞 | |
| CVE-2021-32990 | winproladder 缓冲区错误漏洞 | |
| CVE-2021-32992 | winproladder 缓冲区错误漏洞 | |
| CVE-2021-32988 | winproladder 缓冲区错误漏洞 | |
| CVE-2021-21871 | PowerISO 缓冲区错误漏洞 | |
| CVE-2021-20101 | Machform 注入漏洞 | |
| CVE-2021-35941 | Western Digital WD My Book Live 访问控制错误漏洞 | |
| CVE-2021-20103 | Machform 跨站脚本漏洞 | |
| CVE-2021-20104 | Machform 代码问题漏洞 | |
| CVE-2021-20105 | Machform 输入验证错误漏洞 | |
| CVE-2021-22119 | VMware Spring Security 安全漏洞 | |
| CVE-2020-21394 | Zhongbang CRMEB SQL注入漏洞 |
Showing top 20 of 28 CVEs. View all on vendor page → →
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V. Comments for CVE-2021-34549
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