CVE-2021-3733
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I. Basic Information for CVE-2021-3733
Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
There's a flaw in urllib's AbstractBasicAuthHandler class. An attacker who controls a malicious HTTP server that an HTTP client (such as web browser) connects to, could trigger a Regular Expression Denial of Service (ReDOS) during an authentication request with a specially crafted payload that is sent by the server to the client. The greatest threat that this flaw poses is to application availability.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Python 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Python是Python基金会的一套开源的、面向对象的程序设计语言。该语言具有可扩展、支持模块和包、支持多种平台等特点。 python urllib的AbstractBasicAuthHandler类中存在资源管理错误漏洞，该漏洞源于产品中为能正确处理RCFS（正则表达式拒绝服务）。攻击者可通过该漏洞导致拒绝服务。
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 |
|---|---|---|---|---|
| - | python | Fixed in python v3.6.14, python v3.7.11, python v3.8.10, python v3.9.5. | - |
II. Public POCs for CVE-2021-3733
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · n/a · 2022-03-07 · 46 CVEs total
| CVE-2022-25217 | Phicomm 多款产品信任管理问题漏洞 | |
| CVE-2022-25213 | Phicomm 多款产品信任管理问题漏洞 | |
| CVE-2022-25219 | Phicomm 多款产品安全漏洞 | |
| CVE-2021-34340 | Ming 缓冲区错误漏洞 | |
| CVE-2021-34339 | Ming 缓冲区错误漏洞 | |
| CVE-2021-34338 | Ming 缓冲区错误漏洞 | |
| CVE-2022-26662 | Tryton 安全漏洞 | |
| CVE-2022-26661 | Tryton 代码问题漏洞 | |
| CVE-2021-34341 | Ming 缓冲区错误漏洞 | |
| CVE-2022-25218 | 多款PHICOMM产品加密问题漏洞 | |
| CVE-2022-25215 | Phicomm多款产品安全漏洞 | |
| CVE-2022-25214 | Phicomm多款产品安全漏洞 | |
| CVE-2022-25243 | HashiCorp Vault 信任管理问题漏洞 | |
| CVE-2022-25244 | HashiCorp Vault 安全漏洞 | |
| CVE-2020-36517 | Home Assistant 安全漏洞 | |
| CVE-2021-41657 | SmartBear CodeCollaborator 输入验证错误漏洞 | |
| CVE-2021-43970 | Quicklert 代码问题漏洞 | |
| CVE-2021-43969 | Quicklert SQL注入漏洞 | |
| CVE-2022-22834 | OverIT Geocall 安全漏洞 | |
| CVE-2022-22835 | OverIT Geocall 代码问题漏洞 |
Showing top 20 of 46 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same vendor: n/a
- CVE-2026-8270
Open5GS SMF ogs_nas_parse_qos_rules denial of service - CVE-2026-8269
Open5GS SMF smf_nsmf_handle_create_sm_context denial of serv - CVE-2026-8268
Open5GS SMF OpenAPI_list_create denial of service - CVE-2026-8267
Open5GS SMF smf_nsmf_handle_created_data_in_vsmf denial of s - CVE-2026-8266
Open5GS SMF gsm-build.c gsm_build_pdu_session_establishment_
Same weakness: CWE-400
- CVE-2026-8187
Open5GS UPF gtp-path.c _gtpv1_u_recv_cb resource consumption - CVE-2026-42343
FastGPT: Uncontrolled Resource Consumption leading to Sandbo - CVE-2026-42212
SolidCAM-GPPL-IDE: XML External Entity (XXE) and billion-lau - CVE-2026-32686
Unbounded exponent in decimal enables unauthenticated DoS - CVE-2026-20188
Cisco Crosswork Network Controller and Cisco Network Service
V. Comments for CVE-2021-3733
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