CVE-2021-29505 (GCVE-0-2021-29505)

Vulnerability from cvelistv5 – Published: 2021-05-28 21:00 – Updated: 2025-05-29 23:30
VLAI
Title
XStream is vulnerable to a Remote Command Execution attack
Summary
XStream is software for serializing Java objects to XML and back again. A vulnerability in XStream versions prior to 1.4.17 may allow a remote attacker has sufficient rights to execute commands of the host only by manipulating the processed input stream. No user who followed the recommendation to setup XStream's security framework with a whitelist limited to the minimal required types is affected. The vulnerability is patched in version 1.4.17.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
  • CWE-94 - Improper Control of Generation of Code ('Code Injection')
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
URL Tags
https://github.com/x-stream/xstream/security/advi… x_refsource_CONFIRM
https://github.com/x-stream/xstream/commit/24fac8… x_refsource_MISC
https://github.com/x-stream/xstream/commit/f0c4a8… x_refsource_MISC
https://lists.apache.org/thread.html/r8ee51debf7f… x_refsource_MISC
https://lists.debian.org/debian-lts-announce/2021… x_refsource_MISC
https://lists.fedoraproject.org/archives/list/pac… x_refsource_MISC
https://lists.fedoraproject.org/archives/list/pac… x_refsource_MISC
https://lists.fedoraproject.org/archives/list/pac… x_refsource_MISC
https://security.netapp.com/advisory/ntap-20210708-0007 x_refsource_MISC
https://www.debian.org/security/2021/dsa-5004 x_refsource_MISC
https://www.oracle.com/security-alerts/cpuapr2022.html x_refsource_MISC
https://www.oracle.com/security-alerts/cpujan2022.html x_refsource_MISC
https://www.oracle.com/security-alerts/cpujul2022.html x_refsource_MISC
https://www.oracle.com/security-alerts/cpuoct2021.html x_refsource_MISC
https://x-stream.github.io/CVE-2021-29505.html x_refsource_MISC
https://lists.apache.org/thread.html/r8ee51debf7f… mailing-listx_refsource_MLISTx_transferred
https://lists.fedoraproject.org/archives/list/pac… vendor-advisoryx_refsource_FEDORAx_transferred
https://lists.fedoraproject.org/archives/list/pac… vendor-advisoryx_refsource_FEDORAx_transferred
https://security.netapp.com/advisory/ntap-2021070… x_refsource_CONFIRMx_transferred
https://lists.fedoraproject.org/archives/list/pac… vendor-advisoryx_refsource_FEDORAx_transferred
Impacted products
Vendor Product Version
x-stream xstream Affected: < 1.4.17
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    "redhat_vex": {
      "aggregate_severity": "Important",
      "current_release_date": "2026-05-14T18:31:15+00:00",
      "cve": "CVE-2021-29505",
      "id": "CVE-2021-29505",
      "initial_release_date": "2021-05-14T00:00:00+00:00",
      "product_status:fixed": "18",
      "product_status:known_affected": "10",
      "product_status:known_not_affected": "4",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "XStream: remote command execution attack by manipulating the processed input stream",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-29505.json",
      "version": "3"
    }
  }
}



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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.