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CVE-2021-23382— Regular Expression Denial of Service (ReDoS)

Quick assessment

Affected
n/a postcss
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.

Andrey Sitnik postcss是Andrey Sitnik开源的一个应用程序。用于使用JS插件转换样式的工具。 postcss 8.2.13 版本之前存在安全漏洞，该漏洞源于容易受到正则表达式拒绝服务的攻击，脆弱的正则表达式主要是由子模式sourceMappingURL=(.*)引起的。

CVSS 5.3 · Medium EPSS 2.56% · P85

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking
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I. Basic Information for CVE-2021-23382

Vulnerability Information
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Vulnerability Title
Regular Expression Denial of Service (ReDoS)
Source: CVE Program / CVE List V5
Vulnerability Description
The package postcss before 8.2.13 are vulnerable to Regular Expression Denial of Service (ReDoS) via getAnnotationURL() and loadAnnotation() in lib/previous-map.js. The vulnerable regexes are caused mainly by the sub-pattern \/\*\s* sourceMappingURL=(.*).
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:L
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
postcss 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Andrey Sitnik postcss是Andrey Sitnik开源的一个应用程序。用于使用JS插件转换样式的工具。 postcss 8.2.13 版本之前存在安全漏洞，该漏洞源于容易受到正则表达式拒绝服务的攻击，脆弱的正则表达式主要是由子模式sourceMappingURL=(.*)引起的。
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
- postcss unspecified ~ 8.2.13 -

II. Public POCs for CVE-2021-23382

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III. Intelligence Information for CVE-2021-23382

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Vendor Advisories for CVE-2021-23382 (2)

Same Patch Batch · n/a · 2021-04-26 · 20 CVEs total

CVE-2021-23365 4.8 MEDIUM Authentication Bypass
CVE-2021-25838 MintHCM 跨站脚本漏洞
CVE-2021-31804 leocad 资源管理错误漏洞
CVE-2021-31803 cPanel 跨站脚本漏洞
CVE-2021-25927 safe-flat 安全漏洞
CVE-2021-25928 safe-obj 安全漏洞
CVE-2021-26797 Hame SD1 Wi-Fi 安全漏洞
CVE-2021-28079 jamovi 跨站脚本漏洞
CVE-2021-31802 NETGEAR R7000 缓冲区错误漏洞
CVE-2020-15078 OpenVPN 访问控制错误漏洞
CVE-2021-22669 Advantech WebAccess SCADA 安全漏洞
CVE-2021-25839 MINTHCM 安全漏洞
CVE-2021-28399 Orangehrm 安全漏洞
CVE-2021-3494 Foreman 安全漏洞
CVE-2021-3472 X.Org X Server 数字错误漏洞
CVE-2020-36325 jansson 缓冲区错误漏洞
CVE-2021-31784 Open Design Alliance Drawings SDK 缓冲区错误漏洞
CVE-2021-31783 LocalFilesEditor 数据伪造问题漏洞
CVE-2021-31646 Gestsup 安全漏洞

IV. Related Vulnerabilities

Same product: postcss
Same vendor: n/a

V. Comments for CVE-2021-23382

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