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I. Basic Information for CVE-2015-4000
Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
The TLS protocol 1.2 and earlier, when a DHE_EXPORT ciphersuite is enabled on a server but not on a client, does not properly convey a DHE_EXPORT choice, which allows man-in-the-middle attackers to conduct cipher-downgrade attacks by rewriting a ClientHello with DHE replaced by DHE_EXPORT and then rewriting a ServerHello with DHE_EXPORT replaced by DHE, aka the "Logjam" issue.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
TLS 加密问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
TLS是IETF标准组织的一个传输层安全性协议，目的是为互联网通信提供安全及数据完整性保障。 TLS协议1.2及之前版本中存在加密问题漏洞，该漏洞源于当服务器启用DHE_EXPORT密码套件时，程序没有正确传递DHE_EXPORT选项。攻击者可通过重写ClientHello（使用DHE_EXPORT取代DHE），然后重写ServerHello（使用DHE取代DHE_EXPORT），利用该漏洞实施中间人攻击和cipher-downgrade攻击。
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
VendorProductAffected VersionsCPESubscribe
-n/a n/a -
II. Public POCs for CVE-2015-4000
#POC DescriptionSource LinkShenlong Link
1✨ HAProxy ve Keepalived konusunu load balancer ve cluster'a ek olarak güvenlik(zayıf SSL/Kripto Kullanımı (LOGJAM) (CVE-2015-4000) zafiyeti önlemi) ve yüksek yüklere karşı ele alır.https://github.com/fatlan/HAProxy-Keepalived-Sec-HighLoadsPOC Details
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III. Intelligence Information for CVE-2015-4000
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IV. Related Vulnerabilities
Same product: n/a
Same vendor: n/a
V. Comments for CVE-2015-4000

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