CVE-2021-21342
Severity
9.1CRITICAL
EPSS
0.9%
top 24.82%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedMar 23
Latest updateAug 22
Description
XStream is a Java library to serialize objects to XML and back again. In XStream before version 1.4.16, there is a vulnerability where the processed stream at unmarshalling time contains type information to recreate the formerly written objects. XStream creates therefore new instances based on these type information. An attacker can manipulate the processed input stream and replace or inject objects, that result in a server-side forgery request. No user is affected, who followed the recommendati…
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:NExploitability: 1.6 | Impact: 3.6
Affected Packages15 packages
Also affects: Debian Linux 10.0, 11.0, 9.0, Fedora 33, 34, 35
Patches
🔴Vulnerability Details
4CVEList▶
A Server-Side Forgery Request can be activated unmarshalling with XStream to access data streams from an arbitrary URL referencing a resource in an intranet or the local host↗2021-03-22
GHSA▶
A Server-Side Forgery Request can be activated unmarshalling with XStream to access data streams from an arbitrary URL referencing a resource in an intranet or the local host↗2021-03-22
OSV▶
A Server-Side Forgery Request can be activated unmarshalling with XStream to access data streams from an arbitrary URL referencing a resource in an intranet or the local host↗2021-03-22