CVE-2023-37463— Quadratic complexity bugs may lead to a denial of service
Quick assessment
Affected
github cmark-gfm
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.
cmark-gfm是CommonMark的 C 参考实现的扩展版本，是带有规范的 Markdown 语法的合理化版本。 cmark-gfm 0.29.0.gfm.11版本存在资源管理错误漏洞，该漏洞源于cmark-gfm 中的三个多项式时间复杂度问题，可能会导致无限制的资源耗尽和拒绝服务。
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I. Basic Information for CVE-2023-37463
Vulnerability Information
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Vulnerability Title
Quadratic complexity bugs may lead to a denial of service
Source: CVE Program / CVE List V5
Vulnerability Description
cmark-gfm is an extended version of the C reference implementation of CommonMark, a rationalized version of Markdown syntax with a spec. Three polynomial time complexity issues in cmark-gfm may lead to unbounded resource exhaustion and subsequent denial of service. These vulnerabilities have been patched in 0.29.0.gfm.12.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: CVE Program / CVE List V5
Vulnerability Title
cmark-gfm 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
cmark-gfm是CommonMark的 C 参考实现的扩展版本，是带有规范的 Markdown 语法的合理化版本。 cmark-gfm 0.29.0.gfm.11版本存在资源管理错误漏洞，该漏洞源于cmark-gfm 中的三个多项式时间复杂度问题，可能会导致无限制的资源耗尽和拒绝服务。
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
II. Public POCs for CVE-2023-37463
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Vendor Advisories for CVE-2023-37463 (1)
-
https://github.com/github/cmark-gfm/security/advisories/GHSA-w4qg-3vf7-m9x5 x_refsource_CONFIRM
Other References for CVE-2023-37463 (1)
-
https://github.com/github/cmark-gfm/releases/tag/0.29.0.gfm.12 x_refsource_MISC
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V. Comments for CVE-2023-37463
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