A Server-Side Forgery Request vulnerability in XStream via HashMap unmarshaling
CVE-2021-39152
8.5HIGH
What is CVE-2021-39152?
XStream is a simple library to serialize objects to XML and back again. In affected versions this vulnerability may allow a remote attacker to request data from internal resources that are not publicly available only by manipulating the processed input stream with a Java runtime version 14 to 8. No user is affected, who followed the recommendation to setup XStream's security framework with a whitelist limited to the minimal required types. If you rely on XStream's default blacklist of the Security Framework, you will have to use at least version 1.4.18.
Affected Version(s)
xstream < 1.4.18
References
EPSS Score
61% chance of being exploited in the next 30 days.
CVSS V3.1
Score:
8.5
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
Low
User Interaction:
None
Scope:
Changed
Timeline
Vulnerability published
Vulnerability Reserved