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I. Basic Information for CVE-2020-13777
Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
GnuTLS 3.6.x before 3.6.14 uses incorrect cryptography for encrypting a session ticket (a loss of confidentiality in TLS 1.2, and an authentication bypass in TLS 1.3). The earliest affected version is 3.6.4 (2018-09-24) because of an error in a 2018-09-18 commit. Until the first key rotation, the TLS server always uses wrong data in place of an encryption key derived from an application.
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
GnuTLS 加密问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
GnuTLS是一款免费的用于实现SSL、TLS和DTLS协议的安全通信库。 GnuTLS 3.6.14版本中存在加密问题漏洞。攻击者可通过实施中间人攻击利用该漏洞绕过TLS 1.3版本的身份验证并恢复TLS 1.2版本的先前会话。
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-2020-13777
#POC DescriptionSource LinkShenlong Link
1Zeek script to detect servers vulnerable to CVE-2020-13777https://github.com/0xxon/cve-2020-13777POC Details
2Challange CVE-2020-13777 https://github.com/shigeki/challenge_CVE-2020-13777POC Details
3Nonehttps://github.com/prprhyt/PoC_TLS1_3_CVE-2020-13777POC Details
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III. Intelligence Information for CVE-2020-13777
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New Vulnerabilities
Product: n/a
Vendor: n/a
V. Comments for CVE-2020-13777

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