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CVE-2021-39140— XStream can cause a Denial of Service

Quick assessment

Affected
x-stream xstream
Exploitation
High exploitation probability; assess promptly
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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 1.4.18之前版本存在安全漏洞，攻击者可利用该漏洞根据CPU类型或并行执行有效负载，在目标系统上分配100%的CPU时间，从而仅通过操纵已处理的输入流，导致拒绝服务

CVSS 6.5 · Medium EPSS 5.92% · P93

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking

Affected Version Matrix 1

VendorProduct Version RangeStatus
x-stream xstream < 1.4.18 affected
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I. Basic Information for CVE-2021-39140

Vulnerability Information
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Vulnerability Title
XStream can cause a Denial of Service
Source: CVE Program / CVE List V5
Vulnerability Description
XStream is a simple library to serialize objects to XML and back again. In affected versions this vulnerability may allow a remote attacker to allocate 100% CPU time on the target system depending on CPU type or parallel execution of such a payload resulting in a denial of service 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. XStream 1.4.18 uses no longer a blacklist by default, since it cannot be secured for general purpose.
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
可信数据的反序列化
Source: CVE Program / CVE List V5
Vulnerability Title
XStream 安全漏洞
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 1.4.18之前版本存在安全漏洞，攻击者可利用该漏洞根据CPU类型或并行执行有效负载，在目标系统上分配100%的CPU时间，从而仅通过操纵已处理的输入流，导致拒绝服务
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

Vendor Product Affected Versions CPE Subscribe
x-stream xstream < 1.4.18 -

II. Public POCs for CVE-2021-39140

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III. Intelligence Information for CVE-2021-39140

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Vendor Advisories for CVE-2021-39140 (6)

Mailing List Discussions for CVE-2021-39140 (4)

Security Blog Posts for CVE-2021-39140 (1)

Same Patch Batch · x-stream · 2021-08-23 · 14 CVEs total

CVE-2021-39139 8.5 HIGH XStream is vulnerable to an Arbitrary Code Execution attack
CVE-2021-39141 8.5 HIGH XStream is vulnerable to an Arbitrary Code Execution attack
CVE-2021-39144 8.5 HIGH XStream is vulnerable to a Remote Command Execution attack
CVE-2021-39145 8.5 HIGH XStream is vulnerable to an Arbitrary Code Execution attack
CVE-2021-39146 8.5 HIGH XStream is vulnerable to an Arbitrary Code Execution attack
CVE-2021-39147 8.5 HIGH XStream is vulnerable to an Arbitrary Code Execution attack
CVE-2021-39148 8.5 HIGH XStream is vulnerable to an Arbitrary Code Execution attack
CVE-2021-39149 8.5 HIGH XStream is vulnerable to an Arbitrary Code Execution attack
CVE-2021-39150 8.5 HIGH A Server-Side Forgery Request vulnerability in XStream via PriorityQueue unmarshaling
CVE-2021-39151 8.5 HIGH XStream is vulnerable to an Arbitrary Code Execution attack
CVE-2021-39152 8.5 HIGH A Server-Side Forgery Request vulnerability in XStream via HashMap unmarshaling
CVE-2021-39153 8.5 HIGH XStream is vulnerable to an Arbitrary Code Execution attack
CVE-2021-39154 8.5 HIGH XStream is vulnerable to an Arbitrary Code Execution attack

IV. Related Vulnerabilities

Same product: xstream
Same vendor: x-stream
Same weakness: CWE-502

V. Comments for CVE-2021-39140

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