The 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.
See workarounds for the different versions covering all CVEs.
See full information about the nature of the vulnerability and the steps to reproduce it in XStream’s documentation for CVE-2021-39150.
Lai Han of NSFOCUS security team found and reported the issue to XStream and provided the required information to reproduce it.
If you have any questions or comments about this advisory:
github.com/x-stream/xstream
github.com/x-stream/xstream/security/advisories/GHSA-cxfm-5m4g-x7xp
lists.debian.org/debian-lts-announce/2021/09/msg00017.html
lists.fedoraproject.org/archives/list/[email protected]/message/22KVR6B5IZP3BGQ3HPWIO2FWWCKT3DHP
lists.fedoraproject.org/archives/list/[email protected]/message/PVPHZA7VW2RRSDCOIPP2W6O5ND254TU7
lists.fedoraproject.org/archives/list/[email protected]/message/QGXIU3YDPG6OGTDHMBLAFN7BPBERXREB
nvd.nist.gov/vuln/detail/CVE-2021-39150
security.netapp.com/advisory/ntap-20210923-0003
www.debian.org/security/2021/dsa-5004
www.oracle.com/security-alerts/cpuapr2022.html
www.oracle.com/security-alerts/cpujan2022.html
www.oracle.com/security-alerts/cpujul2022.html
x-stream.github.io/CVE-2021-39150.html