Deskripsi 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."

Informasi CVE

Kelemahan Terkait

CWE-ID	Nama Kelemahan	Sumber
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.

Metrik

Metrik	Skor	Tingkat keparahan	CVSS Vektor	Sumber
V2	10		AV:N/AC:L/Au:N/C:C/I:C/A:C	nvd@nist.gov

EPSS

EPSS adalah model penilaian yang memprediksi kemungkinan suatu kerentanan dieksploitasi.

Skor EPSS

Model EPSS menghasilkan skor probabilitas antara 0 dan 1 (0 hingga 100%). Semakin tinggi skor, semakin besar probabilitas bahwa suatu kerentanan akan dieksploitasi.

Persentil EPSS

Persentil digunakan untuk meranking CVE berdasarkan skor EPSS mereka. Misalnya, CVE di persentil ke-95 berdasarkan skor EPSS-nya lebih mungkin dieksploitasi daripada 95% CVE lainnya. Dengan demikian, persentil digunakan untuk membandingkan skor EPSS suatu CVE dengan CVE lainnya.

EPSS First.org

Produk yang Disebutkan

Konfigurasi 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 -

Referensi

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

Tanggal	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%

Tanggal	Persentil
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 : Detail

CVE-2009-3677