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CVE-2024-1455— Billion Laughs Attack leading to DoS in langchain-ai/langchain

Quick assessment

Affected
langchain-ai langchain-ai/langchain
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.

LangChain是通过可组合性使用 LLM 构建应用程序。 LangChain 存在安全漏洞，该漏洞源于允许攻击者通过 LLM 为解析器生成恶意载荷，从而损害服务的可用性。

AI Predicted 7.5 Difficulty: Easy EPSS 0.76% · P54
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I. Basic Information for CVE-2024-1455

Vulnerability Information
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Vulnerability Title
Billion Laughs Attack leading to DoS in langchain-ai/langchain
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in the langchain-ai/langchain repository allows for a Billion Laughs Attack, a type of XML External Entity (XXE) exploitation. By nesting multiple layers of entities within an XML document, an attacker can cause the XML parser to consume excessive CPU and memory resources, leading to a denial of service (DoS).
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
DTD中递归实体索引的不恰当限制(XML实体扩展)
Source: CVE Program / CVE List V5
Vulnerability Title
LangChain 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
LangChain是通过可组合性使用 LLM 构建应用程序。 LangChain 存在安全漏洞，该漏洞源于允许攻击者通过 LLM 为解析器生成恶意载荷，从而损害服务的可用性。
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
langchain-ai langchain-ai/langchain unspecified ~ 0.1.35 -

II. Public POCs for CVE-2024-1455

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III. Intelligence Information for CVE-2024-1455

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Patches & Fixes for CVE-2024-1455 (1)

Vendor Advisories for CVE-2024-1455 (1)

IV. Related Vulnerabilities

Same product: langchain-ai/langchain
Same vendor: langchain-ai
Same weakness: CWE-776

V. Comments for CVE-2024-1455

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