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CVE-2020-25648

Quick assessment

Affected
n/a nss
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

NSS是美国Mozilla基金会的一个底层密码学库。该库支持多种加密算法，并且 Firefox 浏览器的TLS实现基于该库。 NSS 3.58之前的版本存在安全漏洞，该漏洞源于NSS处理CCS (ChangeCipherSpec)消息的方式发现了一个缺陷。这个缺陷允许远程攻击者可利用该漏洞发送多个CCS消息，导致用NSS库编译的服务器被拒绝服务。

AI Predicted 7.5 Difficulty: Easy EPSS 3.90% · P90

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2020-25648

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in the way NSS handled CCS (ChangeCipherSpec) messages in TLS 1.3. This flaw allows a remote attacker to send multiple CCS messages, causing a denial of service for servers compiled with the NSS library. The highest threat from this vulnerability is to system availability. This flaw affects NSS versions before 3.58.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
不加限制或调节的资源分配
Source: CVE Program / CVE List V5
Vulnerability Title
NSS 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
NSS是美国Mozilla基金会的一个底层密码学库。该库支持多种加密算法，并且 Firefox 浏览器的TLS实现基于该库。 NSS 3.58之前的版本存在安全漏洞，该漏洞源于NSS处理CCS (ChangeCipherSpec)消息的方式发现了一个缺陷。这个缺陷允许远程攻击者可利用该漏洞发送多个CCS消息，导致用NSS库编译的服务器被拒绝服务。
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
- nss nss versions before 3.58 -

II. Public POCs for CVE-2020-25648

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III. Intelligence Information for CVE-2020-25648

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Vendor Advisories for CVE-2020-25648 (4)

Mailing List Discussions for CVE-2020-25648 (5)

Other References for CVE-2020-25648 (1)

Same Patch Batch · n/a · 2020-10-20 · 17 CVEs total

CVE-2020-7749 7.6 HIGH Server-side Request Forgery (SSRF)
CVE-2020-7747 6.3 MEDIUM Cross-site Scripting (XSS)
CVE-2020-7748 5.6 MEDIUM Prototype Pollution
CVE-2020-25157 Advantech R-SeeNet SQL注入漏洞
CVE-2020-5791 Nagios XI和Nagios 操作系统命令注入漏洞
CVE-2020-5790 Nagios XI 跨站请求伪造漏洞
CVE-2020-5792 Nagios XI 参数注入漏洞
CVE-2020-15931 Netwrix Account Lockout Examiner 安全漏洞
CVE-2020-24765 Mind iMind Server 信息泄露漏洞
CVE-2019-9080 DomainMod 加密问题漏洞
CVE-2020-3995 VMware ESXi 安全漏洞
CVE-2020-3994 VMware vCenter Server 信任管理问题漏洞
CVE-2020-3993 VMware NSX-T 安全漏洞
CVE-2020-3992 VMware ESXi 资源管理错误漏洞
CVE-2020-3982 VMware ESXi 安全漏洞
CVE-2020-3981 VMware ESXi 安全漏洞

IV. Related Vulnerabilities

Same product: nss
Same vendor: n/a
Same weakness: CWE-770

V. Comments for CVE-2020-25648

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