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I. Basic Information for CVE-2021-21349
Vulnerability Information

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Vulnerability Title
A Server-Side Forgery Request can be activated unmarshalling with XStream to access data streams from an arbitrary URL referencing a resource in an intranet or the local host
Source: NVD (National Vulnerability Database)
Vulnerability Description
XStream is a Java library to serialize objects to XML and back again. In XStream before version 1.4.16, there is a vulnerability which may allow a remote attacker to request data from internal resources that are not publicly available only by manipulating the processed input stream. No user is affected, who followed the recommendation to setup XStream's security framework with a whitelist limited to the minimal required types. If you rely on XStream's default blacklist of the Security Framework, you will have to use at least version 1.4.16.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:N/I:H/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
可信数据的反序列化
Source: NVD (National Vulnerability Database)
Vulnerability Title
XStream 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
XStream是XStream(Xstream)团队的一个轻量级的、简单易用的开源Java类库,它主要用于将对象序列化成XML(JSON)或反序列化为对象。 XStream 1.4.16 之前版本存在代码问题漏洞,该漏洞源于WEB应用未充分验证请求是否来自可信用户。攻击者可利用该漏洞通过受影响客户端向服务器发送非预期的请求。
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
VendorProductAffected VersionsCPESubscribe
x-streamxstream < 1.4.16 -
II. Public POCs for CVE-2021-21349
#POC DescriptionSource LinkShenlong Link
1XStream SSRF CVE-2021-21349https://github.com/s-index/CVE-2021-21349POC Details
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III. Intelligence Information for CVE-2021-21349
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IV. Related Vulnerabilities
V. Comments for CVE-2021-21349

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