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CVE-2022-31099— Uncontrolled Recursion in rulex

Quick assessment

Affected
rulex-rs rulex
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.

rulex是rulex开源的一种新的、可移植的正则表达式语言。 rulex 0.4.3 之前版本存在安全漏洞，该漏洞源于解析不受信任的 rulex 表达式时，堆栈可能会溢出，可能会导致拒绝服务攻击。

CVSS 6.5 · Medium EPSS 0.95% · P59

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2022-31099

Vulnerability Information
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Vulnerability Title
Uncontrolled Recursion in rulex
Source: CVE Program / CVE List V5
Vulnerability Description
rulex is a new, portable, regular expression language. When parsing untrusted rulex expressions, the stack may overflow, possibly enabling a Denial of Service attack. This happens when parsing an expression with several hundred levels of nesting, causing the process to abort immediately. This is a security concern for you, if your service parses untrusted rulex expressions (expressions provided by an untrusted user), and your service becomes unavailable when the process running rulex aborts due to a stack overflow. The crash is fixed in version **0.4.3**. Affected users are advised to update to this version. There are no known workarounds for this issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未经控制的递归
Source: CVE Program / CVE List V5
Vulnerability Title
rulex 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
rulex是rulex开源的一种新的、可移植的正则表达式语言。 rulex 0.4.3 之前版本存在安全漏洞，该漏洞源于解析不受信任的 rulex 表达式时，堆栈可能会溢出，可能会导致拒绝服务攻击。
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
rulex-rs rulex < 0.4.3 -

II. Public POCs for CVE-2022-31099

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III. Intelligence Information for CVE-2022-31099

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Patches & Fixes for CVE-2022-31099 (1)

Vendor Advisories for CVE-2022-31099 (1)

IV. Related Vulnerabilities

Same product: rulex
Same vendor: rulex-rs
Same weakness: CWE-674

V. Comments for CVE-2022-31099

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