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CVE-2020-26890

Quick assessment

Affected
n/a n/a
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.

Matrix Synapse是英国Matrix.org基金会的一款矩阵管理服务器的实现。 Matrix Synapse 1.20.0 之前版本存在安全漏洞，该漏洞允许在m.room.member事件的字段中使用非标准的NaN，Infinity和-Infinity JSON值，从而使远程攻击者可以对联合身份验证客户端和普通Matrix客户端执行拒绝服务攻击。 如果这种格式错误的事件被接受到房间的状态中，则影响将是持久的，并且无法通过升级到较新的版本来解决，因此需要手动编辑该事件。

AI Predicted 7.5 Difficulty: Easy EPSS 3.00% · P87
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I. Basic Information for CVE-2020-26890

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
Matrix Synapse before 1.20.0 erroneously permits non-standard NaN, Infinity, and -Infinity JSON values in fields of m.room.member events, allowing remote attackers to execute a denial of service attack against the federation and common Matrix clients. If such a malformed event is accepted into the room's state, the impact is long-lasting and is not fixed by an upgrade to a newer version, requiring the event to be manually redacted instead. Since events are replicated to servers of other room members, the impact is not constrained to the server of the event sender.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Matrix Synapse 注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Matrix Synapse是英国Matrix.org基金会的一款矩阵管理服务器的实现。 Matrix Synapse 1.20.0 之前版本存在安全漏洞，该漏洞允许在m.room.member事件的字段中使用非标准的NaN，Infinity和-Infinity JSON值，从而使远程攻击者可以对联合身份验证客户端和普通Matrix客户端执行拒绝服务攻击。 如果这种格式错误的事件被接受到房间的状态中，则影响将是持久的，并且无法通过升级到较新的版本来解决，因此需要手动编辑该事件。
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
- n/a n/a -

II. Public POCs for CVE-2020-26890

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III. Intelligence Information for CVE-2020-26890

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Mailing List Discussions for CVE-2020-26890 (2)

Same Patch Batch · n/a · 2020-11-24 · 48 CVEs total

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CVE-2020-15928 Ortus TestBox 路径遍历漏洞
CVE-2020-15929 Ortus Solutions Testbox 命令注入漏洞
CVE-2020-28991 Gitea 安全漏洞
CVE-2020-25654 Pacemaker 安全漏洞
CVE-2020-29003 MediaWiki 跨站脚本漏洞
CVE-2020-4001 VMWare SD-WAN Orchestrator 信任管理问题漏洞
CVE-2020-25475 Simplephpscripts News Script PHP Pro SQL注入漏洞
CVE-2020-4003 Vmware VMWare SD-WAN Orchestrator SQL注入漏洞
CVE-2020-3984 VMWare SD-WAN Orchestrator SQL注入漏洞
CVE-2020-3985 Vmware VMWare SD-WAN Orchestrator 授权问题漏洞
CVE-2020-4000 Vmware VMWare SD-WAN Orchestrator 路径遍历漏洞
CVE-2020-29040 Xen 访问控制错误漏洞
CVE-2020-10763 Red Hat OpenShift Container Storage 日志信息泄露漏洞
CVE-2020-10762 Red Hat OpenShift Container Storage 日志信息泄露漏洞
CVE-2020-28726 SeedDMS 输入验证错误漏洞
CVE-2020-24815 Microstrategy 代码问题漏洞

Showing top 20 of 48 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: n/a
Same vendor: n/a

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