CVE-2021-29505— 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（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存在代码问题漏洞，该漏洞允许远程攻击者有足够的权限仅通过操纵处理后的输入流来执行主机的命令。
Public Exploits 1
Nuclei · 1
CVE-2021-29505.yaml [template]
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-29505
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 software for serializing Java objects to XML and back again. A vulnerability in XStream versions prior to 1.4.17 may allow a remote attacker has sufficient rights to execute commands of the host only by manipulating the processed input stream. No user who followed the recommendation to setup XStream's security framework with a whitelist limited to the minimal required types is affected. The vulnerability is patched in version 1.4.17.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
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 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存在代码问题漏洞，该漏洞允许远程攻击者有足够的权限仅通过操纵处理后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-2021-29505
| # | POC Description | Source Link | Shenlong Link |
|---|---|---|---|
| 1 | 对CVE-2021-29505进行复现，并分析学了下Xstream反序列化过程 | https://github.com/MyBlackManba/CVE-2021-29505 | POC Details |
| 2 | XStream before 1.4.17 is susceptible to remote code execution. An attacker can execute commands of the host by manipulating the processed input stream, thereby making it possible to obtain sensitive information, modify data, and/or execute unauthorized administrative operations in the context of the affected site. | https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-29505.yaml | POC Details |
| 3 | None | https://github.com/Threekiii/Awesome-POC/blob/master/%E5%BC%80%E5%8F%91%E6%A1%86%E6%9E%B6%E6%BC%8F%E6%B4%9E/XStream%20%E5%8F%8D%E5%BA%8F%E5%88%97%E5%8C%96%E5%91%BD%E4%BB%A4%E6%89%A7%E8%A1%8C%E6%BC%8F%E6%B4%9E%20CVE-2021-29505.md | POC Details |
| 4 | https://github.com/vulhub/vulhub/blob/master/xstream/CVE-2021-29505/README.md | POC Details | |
| 5 | None | https://github.com/cuijiung/xstream-CVE-2021-29505 | POC Details |
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Patches & Fixes for CVE-2021-29505 (1)
Vendor Advisories for CVE-2021-29505 (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/cpuoct2021.html x_refsource_MISC
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https://www.oracle.com/security-alerts/cpuapr2022.html x_refsource_MISC
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https://github.com/x-stream/xstream/security/advisories/GHSA-7chv-rrw6-w6fc x_refsource_CONFIRM
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https://www.oracle.com/security-alerts/cpujul2022.html x_refsource_MISC
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https://security.netapp.com/advisory/ntap-20210708-0007/ x_refsource_CONFIRM
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Mailing List Discussions for CVE-2021-29505 (8)
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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.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/QGXIU3YDPG6OGTDHMBLAFN7BPBERXREB/ vendor-advisory x_refsource_FEDORA
-
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https://lists.apache.org/thread.html/r8ee51debf7fd184b6a6b020dc31df25118b0aa612885f12fbe77f04f%40%3Cdev.jmeter.apache.org%3E mailing-list x_refsource_MLIST
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-
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-
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V. Comments for CVE-2021-29505
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