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                            CERT-Renater

                Note d'Information No. 2025/VULN893
_____________________________________________________________________

DATE                : 22/12/2025

HARDWARE PLATFORM(S): /

OPERATING SYSTEM(S): Systems running Elasticsearch versions prior to
                                8.19.9, 9.1.9, 9.2.3.

=====================================================================
https://discuss.elastic.co/t/elasticsearch-8-19-9-9-1-9-and-9-2-3-security-update-esa-2025-33/384181
https://discuss.elastic.co/t/elasticsearch-8-19-8-9-1-8-and-9-2-2-security-update-esa-2025-37/384185
_____________________________________________________________________

Elasticsearch 8.19.9, 9.1.9, and 9.2.3 Security Update (ESA-2025-33)
Announcements Security Announcements
ismisepaul (Paul) December 18, 2025, 9:17pm 1

Elasticsearch Allocation of Resources Without Limits or Throttling
(ESA-2025-33)

Allocation of Resources Without Limits or Throttling (CWE-770) in
Elasticsearch can allow a low-privileged authenticated user to cause
Excessive Allocation (CAPEC-130) causing a persistent denial of
service (OOM crash) via submission of oversized user settings data.

Affected Versions:

    7.x: All versions
    8.x: All versions from 8.0.0 up to and including 8.19.8
    9.x:
        All versions from 9.0.0 up to and including 9.1.8
        All versions from 9.2.0 up to and including 9.2.2

Solutions and Mitigations:

The issue is resolved in version 8.19.9, 9.1.9, and 9.2.3.

Severity: CVSSv3.1: 6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVE ID: CVE-2025-68384

_____________________________________________________________________


Elasticsearch 8.19.8, 9.1.8, and 9.2.2 Security Update (ESA-2025-37)
Announcements Security Announcements
ismisepaul (Paul) December 18, 2025, 9:27pm 1

Elasticsearch Allocation of Resources Without Limits or Throttling
(ESA-2025-37)

Allocation of Resources Without Limits or Throttling (CWE-770) in
Elasticsearch can allow an authenticated user with snapshot restore
privileges to cause Excessive Allocation (CAPEC-130) of memory and
a denial of service (DoS) via crafted HTTP request.

Affected Versions:

    7.x: All versions
    8.x: All versions from 8.0.0 up to and including 8.19.7
    9.x:
        All versions from 9.0.0 up to and including 9.1.7
        All versions from 9.2.0 up to and including 9.2.1

Affected Configurations:
The attacker must have the permissions to perform a snapshot
restore.

Solutions and Mitigations:

The issue is resolved in version 8.19.8, 9.1.8, and 9.2.2.

Severity: CVSSv3.1: 4.9 (Medium) - CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
CVE ID: CVE-2025-68390


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