Mô tả CVE

The Internet Authentication Service (IAS) in Microsoft Windows 2000 SP4, XP SP2 and SP3, Server 2003 SP2, Vista Gold and SP1, and Server 2008 Gold does not properly verify the credentials in an MS-CHAP v2 Protected Extensible Authentication Protocol (PEAP) authentication request, which allows remote attackers to access network resources via a malformed request, aka "MS-CHAP Authentication Bypass Vulnerability."

Thông tin CVE

Điểm yếu liên quan

CWE-ID	Tên điểm yếu	Nguồn
CWE-94	Improper Control of Generation of Code The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.
CWE-255	Category : Credentials Management Errors Weaknesses in this category are related to the management of credentials.

Số liệu

Số liệu	Điểm	Mức độ nghiêm trọng	CVSS Vector	Nguồn
V2	10		AV:N/AC:L/Au:N/C:C/I:C/A:C	nvd@nist.gov

EPSS

EPSS là mô hình tính điểm dự đoán khả năng một lỗ hổng bị khai thác.

Điểm EPSS

Mô hình EPSS tạo ra điểm xác suất từ 0 đến 1 (0 đến 100%). Điểm càng cao, xác suất một lỗ hổng bị khai thác càng lớn.

Phân vị EPSS

Phân vị được dùng để xếp hạng CVE theo điểm EPSS. Ví dụ, một CVE ở phân vị thứ 95 theo điểm EPSS có nhiều khả năng bị khai thác hơn 95% CVE khác. Do đó, phân vị được dùng để so sánh điểm EPSS của một CVE với các CVE khác.

EPSS First.org

Sản phẩm được đề cập

Cấu hình 0

Microsoft>>Windows_2000 >> Version *

Microsoft>>Windows_server_2003 >> Version *

Microsoft>>Windows_server_2008 >> Version *

Microsoft>>Windows_vista >> Version *

Microsoft>>Windows_xp >> Version *

Microsoft>>Windows_xp >> Version -

Tài liệu tham khảo

https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-071
Tags : vendor-advisory, x_refsource_MS

http://www.us-cert.gov/cas/techalerts/TA09-342A.html
Tags : third-party-advisory, x_refsource_CERT

http://www.securitytracker.com/id?1023291
Tags : vdb-entry, x_refsource_SECTRACK

https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6209
Tags : vdb-entry, signature, x_refsource_OVAL

Ngày	EPSS V0	EPSS V1	EPSS V2 (> 2022-02-04)	EPSS V3 (> 2025-03-07)	EPSS V4 (> 2025-03-17)
2022-02-06	–	–	27.1%	–	–
2022-04-03	–	–	27.1%	–	–
2022-04-17	–	–	23.33%	–	–
2022-06-19	–	–	23.33%	–	–
2022-07-17	–	–	1.21%	–	–
2022-07-24	–	–	23.33%	–	–
2022-09-04	–	–	18.88%	–	–
2022-11-06	–	–	16.23%	–	–
2023-03-12	–	–	–	96.61%	–
2023-03-26	–	–	–	96.13%	–
2023-05-07	–	–	–	95.01%	–
2023-06-25	–	–	–	95.14%	–
2023-08-06	–	–	–	94.99%	–
2023-10-29	–	–	–	92.39%	–
2023-12-17	–	–	–	91.73%	–
2024-01-28	–	–	–	89.93%	–
2024-03-17	–	–	–	89.29%	–
2024-06-02	–	–	–	80.58%	–
2024-06-08	–	–	–	66.72%	–
2024-07-21	–	–	–	59.92%	–
2024-09-01	–	–	–	53.45%	–
2024-10-13	–	–	–	45.72%	–
2024-10-20	–	–	–	45.72%	–
2024-11-17	–	–	–	44.16%	–
2024-12-08	–	–	–	44.16%	–
2024-12-22	–	–	–	36.53%	–
2025-01-19	–	–	–	36.53%	–
2025-03-18	–	–	–	–	66.44%
2025-03-30	–	–	–	–	60.94%
2025-10-01	–	–	–	–	66.7%
2025-10-04	–	–	–	–	66.7%
2025-10-27	–	–	–	–	60.94%
2025-10-28	–	–	–	–	66.7%
2025-11-18	–	–	–	–	66.7%
2025-11-21	–	–	–	–	66.7%
2025-12-27	–	–	–	–	60.94%
2025-12-28	–	–	–	–	66.7%
2026-02-22	–	–	–	–	66.7%

Ngày	Phân vị
2022-02-06	96%
2022-04-03	97%
2022-04-17	96%
2022-06-19	97%
2022-07-17	65%
2022-07-24	97%
2022-09-04	96%
2022-11-06	96%
2023-03-12	99%
2023-03-26	99%
2023-05-07	99%
2023-06-25	99%
2023-08-06	99%
2023-10-29	99%
2023-12-17	99%
2024-01-28	99%
2024-03-17	99%
2024-06-02	98%
2024-06-08	98%
2024-07-21	98%
2024-09-01	98%
2024-10-13	97%
2024-10-20	98%
2024-11-17	97%
2024-12-08	98%
2024-12-22	97%
2025-01-19	97%
2025-03-18	98%
2025-03-30	98%
2025-10-01	99%
2025-10-04	98%
2025-10-27	98%
2025-10-28	98%
2025-11-18	99%
2025-11-21	98%
2025-12-27	98%
2025-12-28	98%
2026-02-22	99%

CVE-2009-3677 : Chi tiết

CVE-2009-3677