IT-Sentinel

« BACK_TO_HOME

PUBLISHED

2026-04-21 01:16

MODIFIED

2026-04-21 01:16

CVSS_SCORE V3

3.1

EPSS (Prob. Exploit)

0.22%

Top 87.6%

DATA SOURCES:

NVD 🔗 2026-04-21 CWE MITRE 🔗 2026-11-01 FIRST EPSS 🔗 2026-11-08 GITHUB 🔗 2026-11-05 OSV 🔗 2026-11-02

> DESCRIPTION

OpenBao is an open source identity-based secrets management system. Prior to version 2.5.3, `ExtractPluginFromImage()` in OpenBao's OCI plugin downloader extracts a plugin binary from a container image by streaming decompressed tar data via `io.Copy` with no upper bound on the number of bytes written. An attacker who controls or compromises the OCI registry referenced in the victim's configuration can serve a crafted image containing a decompression bomb that decompresses to an arbitrarily large file. The SHA256 integrity check occurs after the full file is written to disk, meaning the hash mismatch is detected only after the damage (disk exhaustion) has already occurred. This allow the attacker to replace **legit plugin image** with no need to change its signature. Version 2.5.3 contains a patch.

> AFFECTED_PRODUCTS

ℹ️ Aucun produit affecté n'a encore été publié par NVD pour cette CVE.

> CVSS V3 METRICS

CVSS_VECTOR

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L

EXPLOITABILITY

1.6

IMPACT

1.4

> MÉTRIQUES CVSS DÉTAILLÉES

                CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L
            

Métrique	Valeur	Interprétation
AV (Vecteur d'Attaque) Attack Vector	Network (N)	Exploit possible à distance via réseau (HTTP, API, etc.)
AC (Complexité d'Attaque) Attack Complexity	High (H)	Conditions spécifiques doivent être réunies pour exploiter
PR (Privilèges Requis) Privileges Required	None (N)	Aucune authentification requise
UI (Interaction Utilisateur) User Interaction	Required (R)	Nécessite une action utilisateur (clic lien, ouverture fichier, etc.)
S (Périmètre) Scope	Unchanged (U)	Impact reste dans le périmètre du composant compromis
C (Impact Confidentialité) Confidentiality Impact	None (N)	Aucune divulgation d'informations
I (Impact Intégrité) Integrity Impact	None (N)	Aucune modification de données possible
A (Impact Disponibilité) Availability Impact	Low (L)	Interruption partielle du service possible

> RÉSUMÉ DES IMPACTS

Confidentialité

None

Aucune divulgation d'informations

Intégrité

None

Aucune modification de données possible

Disponibilité

Low

Interruption partielle du service possible

> WEAKNESSES

CWE-400 CWE-674 CWE-770

> CWE DETAILED DESCRIPTIONS

CWE-400: Uncontrolled Resource Consumption - The product does not properly control the allocation and maintenance of a limited resource. | CWE-674: Uncontrolled Recursion - The product does not properly control the amount of recursion that takes place, consuming excessive resources, such as allocated memory or the program stack. | CWE-770: Allocation of Resources Without Limits or Throttling - The product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.

> GITHUB SECURITY ADVISORY

GHSA-r65v-xgwc-g56j LOW

OpenBao: Decompression Bomb via Unbounded Copy in OCI Plugin Extraction (DoS)

AFFECTED PACKAGES:

GO / github.com/openbao/openbao

< 0.0.0-20260420180337-2b2a901aa9f7

Fixed in: 0.0.0-20260420180337-2b2a901aa9f7

> OSV (GOOGLE OPEN SOURCE VULNERABILITIES)

OpenBao has Decompression Bomb via Unbounded Copy in OCI Plugin Extraction (DoS)

AFFECTED PACKAGES:

Unknown / Unknown

132 versions affected

ALIASES:

BIT-openbao-2026-39396, GHSA-r65v-xgwc-g56j, GO-2026-5609

> HISTORIQUE DES MODIFICATIONS

Première apparition

21/04/2026 01:16

Source: NVD

📊 ENRICHISSEMENT 01/05/2026 06:01

CWE

Champ modifié: Description CWE

Ancienne valeur:

N/A

Nouvelle valeur:

Total des modifications: 1 Dernière mise à jour: 6 months ago

> REFERENCES

https://github.com/openbao/openbao/security/advisories/GHSA-r65v-xgwc-g56j