PT-2021-22404 · Xstream+6 · Xstream+6
Published
2021-08-23
·
Updated
2023-03-13
·
CVE-2021-39148
CVSS v3.1
8.5
High
| Vector | AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H |
Name of the Vulnerable Software and Affected Versions
XStream versions prior to 1.4.18
Description
The issue allows a remote attacker to load and execute arbitrary code from a remote host by manipulating the processed input stream. Users who set up XStream's security framework with a whitelist limited to the minimal required types are not affected.
Recommendations
For versions prior to 1.4.18, setup XStream's security framework with a whitelist limited to the minimal required types to prevent exploitation.
As a temporary workaround, consider disabling the use of blacklists in XStream until a patch is available.
Update to version 1.4.18 or later, which uses a whitelist by default and does not rely on a blacklist for security.
Exploit
Fix
Deserialization of Untrusted Data
Unrestricted File Upload
Found an issue in the description? Have something to add? Feel free to write us 👾
Related Identifiers
Affected Products
Alt Linux
Astra Linux
Linuxmint
Red Hat
Suse
Ubuntu
Xstream