CVE-2023-43642

Missing upper bound check on chunk length in snappy-java

Severity Score

7.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Attend

*SSVC

Descriptions

snappy-java is a Java port of the snappy, a fast C++ compresser/decompresser developed by Google. The SnappyInputStream was found to be vulnerable to Denial of Service (DoS) attacks when decompressing data with a too large chunk size. Due to missing upper bound check on chunk length, an unrecoverable fatal error can occur. All versions of snappy-java including the latest released version 1.1.10.3 are vulnerable to this issue. A fix has been introduced in commit `9f8c3cf74` which will be included in the 1.1.10.4 release. Users are advised to upgrade. Users unable to upgrade should only accept compressed data from trusted sources.

snappy-java es una adaptación Java de snappy, un rápido compresor/descompresor de C++ desarrollado por Google. Se descubrió que SnappyInputStream era vulnerable a ataques de denegación de servicio (DoS) al descomprimir datos con un tamaño de fragmento demasiado grande. Debido a que falta la verificación del límite superior en la longitud del fragmento, puede ocurrir un error fatal irrecuperable. Todas las versiones de snappy-java, incluida la última versión 1.1.10.3, son vulnerables a este problema.
Se introdujo una solución en el commit `9f8c3cf74` que se incluirá en la versión 1.1.10.4.
Se recomienda a los usuarios que actualicen. Los usuarios que no puedan actualizar solo deben aceptar datos comprimidos de fuentes confiables.

A flaw was found in SnappyInputStream in snappy-java, a data compression library in Java. This issue occurs when decompressing data with a too-large chunk size due to a missing upper bound check on chunk length. An unrecoverable fatal error can occur, resulting in a Denial of Service (DoS).

*Credits: N/A

CVSS Scores

NISTv3.1 7.5

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

* Common Vulnerability Scoring System

SSVC

Decision:Attend

Exploitation

Poc

Automatable

Yes

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2023-09-20 CVE Reserved
2023-09-25 CVE Published
2024-09-24 CVE Updated
2024-09-24 First Exploit
2024-10-27 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-770: Allocation of Resources Without Limits or Throttling

CAPEC

References (4)

URL	Tag	Source

URL	Date	SRC
https://github.com/xerial/snappy-java/security/advisories/GHSA-55g7-9cwv-5qfv	2024-09-24

URL	Date	SRC
https://github.com/xerial/snappy-java/commit/9f8c3cf74223ed0a8a834134be9c917b9f10ceb5	2023-09-26

URL	Date	SRC
https://access.redhat.com/security/cve/CVE-2023-43642	2024-05-30
https://bugzilla.redhat.com/show_bug.cgi?id=2241722	2024-05-30

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Xerial Search vendor "Xerial"		Snappy-java Search vendor "Xerial" for product "Snappy-java"				< 1.1.10.4 Search vendor "Xerial" for product "Snappy-java" and version " < 1.1.10.4"		-		Affected