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CVE-2021-39157— Improper Handling of Exceptional Conditions in detect-character-encoding

Quick assessment

Affected
sonicdoe detect-character-encoding
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.

detect-character-encoding是开源的一个 C++ 插件。 detect-character-encoding存在安全漏洞，该漏洞源于在istio istio中发现一个授权绕过漏洞。当计算用 host 或 notHost 指定的规则时，不区分大小写的主机比较不正确。这个漏洞允许攻击者可利用该漏洞绕过在规则中使用主机的Istio授权策略，从而可能获得对下游服务的访问权。来自此漏洞的最大威胁是机密性、完整性以及系统可用性。

CVSS 7.5 · High EPSS 2.07% · P80

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking
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I. Basic Information for CVE-2021-39157

Vulnerability Information
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Vulnerability Title
Improper Handling of Exceptional Conditions in detect-character-encoding
Source: CVE Program / CVE List V5
Vulnerability Description
detect-character-encoding is an open source character encoding inspection library. In detect-character-encoding v0.6.0 and earlier, data matching no charset causes the Node.js process to crash. The problem has been patched in [detect-character-encoding v0.7.0](https://github.com/sonicdoe/detect-character-encoding/releases/tag/v0.7.0). No workaround are available and all users should update to resolve this issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对异常条件的处理不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
detect-character-encoding 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
detect-character-encoding是开源的一个 C++ 插件。 detect-character-encoding存在安全漏洞，该漏洞源于在istio istio中发现一个授权绕过漏洞。当计算用 host 或 notHost 指定的规则时，不区分大小写的主机比较不正确。这个漏洞允许攻击者可利用该漏洞绕过在规则中使用主机的Istio授权策略，从而可能获得对下游服务的访问权。来自此漏洞的最大威胁是机密性、完整性以及系统可用性。
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
sonicdoe detect-character-encoding < 0.7.0 -

II. Public POCs for CVE-2021-39157

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III. Intelligence Information for CVE-2021-39157

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Patches & Fixes for CVE-2021-39157 (1)

Vendor Advisories for CVE-2021-39157 (1)

Other References for CVE-2021-39157 (1)

IV. Related Vulnerabilities

Same product: detect-character-encoding
Same vendor: sonicdoe
Same weakness: CWE-755

V. Comments for CVE-2021-39157

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