CVE-2021-43859
Published: 1 February 2022
XStream is an open source java library to serialize objects to XML and back again. Versions prior to 1.4.19 may allow a remote attacker to allocate 100% CPU time on the target system depending on CPU type or parallel execution of such a payload resulting in a denial of service only by manipulating the processed input stream. XStream 1.4.19 monitors and accumulates the time it takes to add elements to collections and throws an exception if a set threshold is exceeded. Users are advised to upgrade as soon as possible. Users unable to upgrade may set the NO_REFERENCE mode to prevent recursion. See GHSA-rmr5-cpv2-vgjf for further details on a workaround if an upgrade is not possible.
Priority
Medium
CVSS 3 base score: 7.5
Status
| Package | Release | Status |
|---|---|---|
|
libxstream-java Launchpad, Ubuntu, Debian |
bionic |
Needs triage
|
| focal |
Needs triage
|
|
| impish |
Needs triage
|
|
| jammy |
Needs triage
|
|
| trusty |
Needs triage
|
|
| upstream |
Needs triage
|
References
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43859
- https://github.com/x-stream/xstream/security/advisories/GHSA-rmr5-cpv2-vgjf
- https://x-stream.github.io/CVE-2021-43859.html
- https://github.com/x-stream/xstream/commit/e8e88621ba1c85ac3b8620337dd672e0c0c3a846
- NVD
- Launchpad
- Debian