CVE-2021-43859
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (7.93%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 7.93% probability · 94th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-400
- Affected
- jenkins/jenkins · xstream/xstream · fedoraproject/fedora · debian/debian linux · oracle/commerce guided search · oracle/communications brm - elastic charging engine · oracle/communications cloud native core automated test suite · oracle/communications diameter intelligence hub · oracle/communications policy management · oracle/flexcube private banking · oracle/retail xstore point of service
- Source
- security-advisories@github.com
References
- http://www.openwall.com/lists/oss-security/2022/02/09/1Mailing List, Third Party Advisory
- https://github.com/x-stream/xstream/commit/e8e88621ba1c85ac3b8620337dd672e0c0c3a846Patch, Third Party Advisory
- https://github.com/x-stream/xstream/security/advisories/GHSA-rmr5-cpv2-vgjfExploit, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/02/msg00018.htmlMailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VACQYG356OHUTD5WQGAQ4L2TTFTAV3SJ/Mailing List
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XODFRE2ZL64FICBJDOPWOLPTSSAI4U7X/Mailing List
- https://www.oracle.com/security-alerts/cpuapr2022.htmlPatch, Third Party Advisory
- https://www.oracle.com/security-alerts/cpujul2022.htmlPatch, Third Party Advisory
- https://x-stream.github.io/CVE-2021-43859.htmlExploit, Vendor Advisory
- http://www.openwall.com/lists/oss-security/2022/02/09/1Mailing List, Third Party Advisory
- https://github.com/x-stream/xstream/commit/e8e88621ba1c85ac3b8620337dd672e0c0c3a846Patch, Third Party Advisory
- https://github.com/x-stream/xstream/security/advisories/GHSA-rmr5-cpv2-vgjfExploit, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/02/msg00018.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2024/12/msg00023.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VACQYG356OHUTD5WQGAQ4L2TTFTAV3SJ/Mailing List
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XODFRE2ZL64FICBJDOPWOLPTSSAI4U7X/Mailing List
- https://www.oracle.com/security-alerts/cpuapr2022.htmlPatch, Third Party Advisory
- https://www.oracle.com/security-alerts/cpujul2022.htmlPatch, Third Party Advisory
- https://x-stream.github.io/CVE-2021-43859.htmlExploit, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.