CVE-2021-21345— XStream is vulnerable to a Remote Command Execution attack
Quick assessment
Affected
x-stream xstream
Exploitation
Public or AI PoC available; prioritize validation
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 之前版本存在操作系统命令注入漏洞，攻击者可利用该漏洞仅通过操作已处理的输入流来执行主机的命令。
Public Exploits 1
Nuclei · 1
CVE-2021-21345.yaml [template]
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-21345
Vulnerability Information
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Vulnerability Title
XStream is vulnerable to a Remote Command Execution attack
Source: CVE Program / CVE List V5
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 who has sufficient rights to execute commands of the host 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: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:N/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
对生成代码的控制不恰当(代码注入)
Source: CVE Program / CVE List V5
Vulnerability Title
XStream 操作系统命令注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
XStream是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 之前版本存在操作系统命令注入漏洞，攻击者可利用该漏洞仅通过操作已处理的输入流来执行主机的命令。
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)
Shenlong Deep Dive — AI Deep Analysis
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Affected Products
II. Public POCs for CVE-2021-21345
| # | POC Description | Source Link | Shenlong Link |
|---|---|---|---|
| 1 | XStream before 1.4.16 is susceptible to remote code execution. An attacker who has sufficient rights can execute host commands via manipulating the processed input stream, thereby making it possible to obtain sensitive information, modify data, and/or execute unauthorized administrative operations. | https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-21345.yaml | POC Details |
| 2 | None | https://github.com/shoucheng3/x-stream__xstream_CVE-2021-21345_1-4-15 | POC Details |
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Vendor Advisories for CVE-2021-21345 (7)
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https://www.oracle.com/security-alerts/cpujan2022.html x_refsource_MISC
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https://www.oracle.com/security-alerts/cpuApr2021.html x_refsource_MISC
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https://www.oracle.com/security-alerts/cpuoct2021.html x_refsource_MISC
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https://www.oracle.com//security-alerts/cpujul2021.html x_refsource_MISC
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https://github.com/x-stream/xstream/security/advisories/GHSA-hwpc-8xqv-jvj4 x_refsource_CONFIRM
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https://security.netapp.com/advisory/ntap-20210430-0002/ x_refsource_CONFIRM
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Mailing List Discussions for CVE-2021-21345 (6)
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https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QGXIU3YDPG6OGTDHMBLAFN7BPBERXREB/ vendor-advisory x_refsource_FEDORA
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https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/22KVR6B5IZP3BGQ3HPWIO2FWWCKT3DHP/ vendor-advisory x_refsource_FEDORA
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https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PVPHZA7VW2RRSDCOIPP2W6O5ND254TU7/ vendor-advisory x_refsource_FEDORA
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https://lists.apache.org/thread.html/r9ac71b047767205aa22e3a08cb33f3e0586de6b2fac48b425c6e16b0%40%3Cdev.jmeter.apache.org%3E mailing-list x_refsource_MLIST
Security Blog Posts for CVE-2021-21345 (2)
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http://x-stream.github.io/changes.html#1.4.16 x_refsource_MISC
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https://x-stream.github.io/CVE-2021-21345.html x_refsource_MISC
Same Patch Batch · x-stream · 2021-03-22 · 11 CVEs total
| CVE-2021-21341 | 7.5 HIGH | XStream can cause a Denial of Service |
| CVE-2021-21346 | 6.1 MEDIUM | XStream is vulnerable to an Arbitrary Code Execution attack |
| CVE-2021-21347 | 6.1 MEDIUM | XStream is vulnerable to an Arbitrary Code Execution attack |
| CVE-2021-21349 | 6.1 MEDIUM | A Server-Side Forgery Request can be activated unmarshalling with XStream to access data s |
| CVE-2021-21351 | 5.4 MEDIUM | XStream is vulnerable to an Arbitrary Code Execution attack |
| CVE-2021-21342 | 5.3 MEDIUM | A Server-Side Forgery Request can be activated unmarshalling with XStream to access data s |
| CVE-2021-21343 | 5.3 MEDIUM | XStream is vulnerable to an Arbitrary File Deletion on the local host when unmarshalling a |
| CVE-2021-21344 | 5.3 MEDIUM | XStream is vulnerable to an Arbitrary Code Execution attack |
| CVE-2021-21348 | 5.3 MEDIUM | XStream is vulnerable to an attack using Regular Expression for a Denial of Service (ReDos |
| CVE-2021-21350 | 5.3 MEDIUM | XStream is vulnerable to an Arbitrary Code Execution attack |
IV. Related Vulnerabilities
Same product: xstream
-
CVE-2024-47072
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CVE-2021-43859
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CVE-2021-39150
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-
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CVE-2021-39150
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V. Comments for CVE-2021-21345
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