Vulnerability Description
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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Jenkins | Jenkins | < 2.319.3 |
| Xstream | Xstream | < 1.4.19 |
| Fedoraproject | Fedora | 34 |
| Debian | Debian Linux | 9.0 |
| Oracle | Commerce Guided Search | 11.3.2 |
| Oracle | Communications Brm - Elastic Charging Engine | < 12.0.0.4.6 |
| Oracle | Communications Cloud Native Core Automated Test Suite | 1.9.0 |
| Oracle | Communications Diameter Intelligence Hub | >= 8.0.0, <= 8.1.0 |
| Oracle | Communications Policy Management | 12.6.0.0.0 |
| Oracle | Flexcube Private Banking | 12.1.0 |
| Oracle | Retail Xstore Point Of Service | 16.0.6 |
Related Weaknesses (CWE)
References
- http://www.openwall.com/lists/oss-security/2022/02/09/1Mailing ListThird Party Advisory
- https://github.com/x-stream/xstream/commit/e8e88621ba1c85ac3b8620337dd672e0c0c3aPatchThird Party Advisory
- https://github.com/x-stream/xstream/security/advisories/GHSA-rmr5-cpv2-vgjfExploitThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/02/msg00018.htmlMailing ListThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproMailing List
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproMailing List
- https://www.oracle.com/security-alerts/cpuapr2022.htmlPatchThird Party Advisory
- https://www.oracle.com/security-alerts/cpujul2022.htmlPatchThird Party Advisory
- https://x-stream.github.io/CVE-2021-43859.htmlExploitVendor Advisory
- http://www.openwall.com/lists/oss-security/2022/02/09/1Mailing ListThird Party Advisory
- https://github.com/x-stream/xstream/commit/e8e88621ba1c85ac3b8620337dd672e0c0c3aPatchThird Party Advisory
- https://github.com/x-stream/xstream/security/advisories/GHSA-rmr5-cpv2-vgjfExploitThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/02/msg00018.htmlMailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2024/12/msg00023.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproMailing List
FAQ
What is CVE-2021-43859?
CVE-2021-43859 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 ...
How severe is CVE-2021-43859?
CVE-2021-43859 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-43859?
Check the references section above for vendor advisories and patch information. Affected products include: Jenkins Jenkins, Xstream Xstream, Fedoraproject Fedora, Debian Debian Linux, Oracle Commerce Guided Search.