Impact
The vulnerability may allow a remote attacker to load and execute arbitrary code from a remote host only by manipulating the processed input stream. No user is affected, who followed the recommendation to setup XStream's security framework with a whitelist limited to the minimal required types.
Patches
XStream 1.4.18 uses no longer a blacklist by default, since it cannot be secured for general purpose.
Workarounds
See workarounds for the different versions covering all CVEs.
References
See full information about the nature of the vulnerability and the steps to reproduce it in XStream's documentation for CVE-2021-39145.
Credits
李安诺 (Li4n0) from Alibaba Cloud Security Team and Smi1e of DBAPPSecurity WEBIN Lab found and reported the issue independently to XStream and provided the required information to reproduce it.
For more information
If you have any questions or comments about this advisory:
References
Li4n0 Analyst
Impact
The vulnerability may allow a remote attacker to load and execute arbitrary code from a remote host only by manipulating the processed input stream. No user is affected, who followed the recommendation to setup XStream's security framework with a whitelist limited to the minimal required types.
Patches
XStream 1.4.18 uses no longer a blacklist by default, since it cannot be secured for general purpose.
Workarounds
See workarounds for the different versions covering all CVEs.
References
See full information about the nature of the vulnerability and the steps to reproduce it in XStream's documentation for CVE-2021-39145.
Credits
李安诺 (Li4n0) from Alibaba Cloud Security Team and Smi1e of DBAPPSecurity WEBIN Lab found and reported the issue independently to XStream and provided the required information to reproduce it.
For more information
If you have any questions or comments about this advisory:
References