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Fencer Intel
critical 9.8

CVE-2021-34427 in the critical feed json

In Eclipse BIRT versions 4.8.0 and earlier, an attacker can use query parameters to create a JSP file which is accessible from remote (curr…

published 5y ago modified 4mo ago also EUVD-2021-21085

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
58.0%
EPSS 58.0% chance of exploitation in 30 days, percentile 99%
public exploits
0
none known, plus a Nuclei check

Summary

In Eclipse BIRT versions 4.8.0 and earlier, an attacker can use query parameters to create a JSP file which is accessible from remote (current BIRT viewer dir) to inject JSP code into the running instance.

Patch / fix

Is CVE-2021-34427 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2021-34427 updated cvss 8.8

eclipse-birt: an attacker can use query parameters to create a JSP file and inject JSP code into the running instance

  • Red Hat Enterprise Linux 6 eclipse-birt
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

57.98% chance of exploitation in the next 30 days, higher than 99% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • Nuclei template Eclipse BIRT Viewer - Remote Code Execution nuclei detection template
  • bugs.eclipse.org https://bugs.eclipse.org/bugs/show_bug.cgi?id=538142 referenced PoC, tagged "exploit" by a source, unverified
  • seclists.org http://seclists.org/fulldisclosure/2022/Dec/30 referenced PoC, tagged "exploit" by a source, unverified
  • packetstormsecurity.com http://packetstormsecurity.com/files/170326/Eclipse-Business-Intelligence-Reporting-Tool-4.11.0-Remote-Code-Execution.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Affected products

  • The Eclipse Foundation Eclipse BIRT

Classification

Weakness
  • CWE-20 Improper Input Validation
  • CWE-434 Unrestricted Upload of File with Dangerous Type

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.