Media

TemporaryFolder on unix-like systems does not limit access to created files

Publicada: 23.11.2022
Actualizado: 11.10.2026 12:22

Vulnerability

PreparedStatement.setText(int, InputStream) and

PreparedStatemet.setBytea(int, InputStream)

will create a temporary file if the InputStream is larger than 51k

Example of vulnerable code:

java

String s = "some very large string greater than 51200 bytes";

PreparedStatement.setInputStream(1, new ByteArrayInputStream(s.getBytes()) );

This will create a temporary file which is readable by other users on Unix like systems, but not MacOS.

Impact On Unix like systems, the system's temporary directory is shared between all users on that system. Because of this, when files and directories are written into this directory they are, by default, readable by other users on that same system.

This vulnerability does not allow other users to overwrite the contents of these directories or files. This is purely an information disclosure vulnerability.

When analyzing the impact of this vulnerability, here are the important questions to ask:

Is the driver running in an environment where the OS has other untrusted users. If yes, and you answered 'yes' to question 1, this vulnerability impacts you. If no, this vulnerability does not impact you. Patches Because certain JDK file system APIs were only added in JDK 1.7, this this fix is dependent upon the version of the JDK you are using.

Java 1.8 and higher users: this vulnerability is fixed in 42.2.27, 42.3.8, 42.4.3, 42.5.1 Java 1.7 users: this vulnerability is fixed in 42.2.27.jre7 Java 1.6 and lower users: no patch is available; you must use the workaround below. Workarounds If you are unable to patch, or are stuck running on Java 1.6, specifying the java.io.tmpdir system environment variable to a directory that is exclusively owned by the executing user will fix this vulnerability.

References CWE-200: Exposure of Sensitive Information to an Unauthorized Actor Fix commit https://github.com/pgjdbc/pgjdbc/commit/9008dc9aade6dbfe4efafcd6872ebc55f4699cf5 Similar Vulnerabilities Google Guava - https://github.com/google/guava/issues/4011 Apache Ant - https://nvd.nist.gov/vuln/detail/CVE-2020-1945 JetBrains Kotlin Compiler - https://nvd.nist.gov/vuln/detail/CVE-2020-15824

Software afectado

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Plataforma	Paquete	Versiones vulnerables	Corregida en
Java / Kotlin (Maven)	org.postgresql:postgresql	>= 42.2.0, < 42.2.27, >= 42.3.0, < 42.3.8, >= 42.4.0, < 42.4.3, >= 42.5.0, < 42.5.1	42.2.27, 42.3.8, 42.4.3, 42.5.1

Referencias

Puntuación CVSS 4.7/10

Vector CVSS: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
Debilidad (CWE): CWE-200, CWE-668
Plataforma: Java / Kotlin (Maven)
Paquete: org.postgresql:postgresql
Publicada: 23.11.2022
Actualizado: 11.10.2026 12:22

Fuentes y licencias

OSV / GitHub Advisory Database - GHSA-562r-vg33-8x8h - CC BY 4.0

Historial de vulnerabilidades: org.postgresql:postgresql

Todas las vulnerabilidades publicadas de este paquete (Java / Kotlin (Maven)), de la más reciente a la más antigua. Muestra si es un fallo aislado o un paquete que hay que vigilar.

Todas (10) en el archivo

Entradas en total: 10
Primera → última: 02.2022 07.2026
Sin corrección: 0
Explotada en ataques: 0

Distribución por gravedad

Crítica 1
Alta 7
Media 2

Divulgaciones por año

2022: 6
2023: 0
2024: 1
2025: 1
2026: 2

21.07.2026

PostgreSQL JDBC Driver: Silent channel-binding authentication downgrade via unsupported certificate algorithms

Alta CVE-2026-54291 >= 42.7.4, < 42.7.12 42.7.12
05.05.2026

pgjdbc: Unbounded PBKDF2 iterations in SCRAM authentication allows CPU exhaustion DoS

Alta · 7.5 CVE-2026-42198 >= 42.2.0, < 42.7.11 42.7.11
11.06.2025

pgjdbc Client Allows Fallback to Insecure Authentication Despite channelBinding=require Configuration

Alta · 8.2 CVE-2025-49146 >= 42.7.4, < 42.7.7 42.7.7
21.02.2024

org.postgresql:postgresql vulnerable to SQL Injection via line comment generation

Crítica · 10.0 CVE-2024-1597 < 42.2.28, >= 42.3.0, < 42.3.9, >= 42.4.0, < 42.4.4, >= 42.5.0, < 42.5.5, >= 42.6.0, < 42.6.1, >= 42.7.0, < 42.7.2 42.2.28, 42.3.9, 42.4.4, 42.5.5, 42.6.1, 42.7.2
23.11.2022

TemporaryFolder on unix-like systems does not limit access to created files esta entrada

Media · 4.7 CVE-2022-41946 >= 42.2.0, < 42.2.27, >= 42.3.0, < 42.3.8, >= 42.4.0, < 42.4.3, >= 42.5.0, < 42.5.1 42.2.27, 42.3.8, 42.4.3, 42.5.1
06.08.2022

PostgreSQL JDBC Driver SQL Injection in ResultSet.refreshRow() with malicious column names

Alta · 7.1 CVE-2022-31197 < 42.2.26, >= 42.4.0, < 42.4.1, >= 42.3.0, < 42.3.7 42.2.26, 42.4.1, 42.3.7
17.05.2022

Unescaped parameters in the PostgreSQL JDBC driver

Alta CVE-2012-1618 < 8.2 8.2
10.02.2022

Improper Restriction of XML External Entity Reference

Alta · 7.7 CVE-2020-13692 >= 9.4.1212.jre6, < 42.2.13 42.2.13
02.02.2022

pgjdbc Does Not Check Class Instantiation when providing Plugin Classes

Alta · 7.0 CVE-2022-21724 >= 9.4.1208, < 42.2.25, >= 42.3.0, < 42.3.2 42.2.25, 42.3.2

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