Medium severityOSV Advisory· Published Sep 22, 2025· Updated Apr 15, 2026

CVE-2025-59432

Description

SCRAM (Salted Challenge Response Authentication Mechanism) is part of the family of Simple Authentication and Security Layer (SASL, RFC 4422) authentication mechanisms. Prior to version 3.2, a timing attack vulnerability exists in the SCRAM Java implementation. The issue arises because Arrays.equals was used to compare secret values such as client proofs and server signatures. Since Arrays.equals performs a short-circuit comparison, the execution time varies depending on how many leading bytes match. This behavior could allow an attacker to perform a timing side-channel attack and potentially infer sensitive authentication material. All users relying on SCRAM authentication are impacted. This vulnerability has been patched in version 3.1 by replacing Arrays.equals with MessageDigest.isEqual, which ensures constant-time comparison.

Affected packages

Versions sourced from the GitHub Security Advisory.

Package	Affected versions	Patched versions
com.ongres.scram:scram-commonMaven	< 3.2	3.2

Affected products

Ongres/ScramOSV
Range: 1.0.0-beta.2, 1.9-beta1, 2.0, …

Patches

b404a64e125e

release: SCRAM Java 3.2

https://github.com/ongres/scramJorge SolórzanoSep 16, 2025via osv

commit

7 files changed · +18 −9

CHANGELOG.md+10 −1 modified

@@ -3,6 +3,14 @@ All notable changes to this project will be documented in this file.
 
 ## [Unreleased]
 
+## [3.2] - 2025-09-16
+### :lock: Security
+- Fix Timing Attack Vulnerability in SCRAM Authentication
+
+### :ghost: Maintenance
+- Updated dependencies and maven plugins.
+- Use `central-publishing-maven-plugin` to deploy to Maven Central.
+
 ## [3.1] - 2024-06-26
 ### :building_construction: Improvements
 - Ensure the `LICENSE` file is included in the Jar file.
@@ -38,4 +46,5 @@ All notable changes to this project will be documented in this file.
 
 [3.0]: https://github.com/ongres/scram/compare/2.1...3.0
 [3.1]: https://github.com/ongres/scram/compare/3.0...3.1
-[Unreleased]: https://github.com/ongres/scram/compare/3.1...main
+[3.2]: https://github.com/ongres/scram/compare/3.1...3.2
+[Unreleased]: https://github.com/ongres/scram/compare/3.2...main

coverage-report/pom.xml+1 −1 modified

@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.ongres.scram</groupId>
     <artifactId>scram-parent</artifactId>
-    <version>3.2-SNAPSHOT</version>
+    <version>3.2</version>
     <relativePath>../scram-parent/pom.xml</relativePath>
   </parent>

pom.xml+1 −1 modified

@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.ongres.scram</groupId>
     <artifactId>scram-parent</artifactId>
-    <version>3.3-SNAPSHOT</version>
+    <version>3.2</version>
     <relativePath>scram-parent/pom.xml</relativePath>
   </parent>

scram-client/pom.xml+1 −1 modified

@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.ongres.scram</groupId>
     <artifactId>scram-parent</artifactId>
-    <version>3.3-SNAPSHOT</version>
+    <version>3.2</version>
     <relativePath>../scram-parent/pom.xml</relativePath>
   </parent>

scram-client/src/it/jpms-scram-client/pom.xml+1 −1 modified

@@ -7,7 +7,7 @@
   <groupId>com.ongres.scram.it</groupId>
   <artifactId>jpms-scram-client</artifactId>
   <name>JPMS Scram Client</name>
-  <version>3.2-SNAPSHOT</version>
+  <version>3.2</version>
 
   <properties>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>

scram-common/pom.xml+1 −1 modified

@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.ongres.scram</groupId>
     <artifactId>scram-parent</artifactId>
-    <version>3.3-SNAPSHOT</version>
+    <version>3.2</version>
     <relativePath>../scram-parent/pom.xml</relativePath>
   </parent>

scram-parent/pom.xml+3 −3 modified

@@ -4,7 +4,7 @@
 
   <groupId>com.ongres.scram</groupId>
   <artifactId>scram-parent</artifactId>
-  <version>3.3-SNAPSHOT</version>
+  <version>3.2</version>
   <packaging>pom</packaging>
 
   <name>SCRAM - Parent</name>
@@ -44,7 +44,7 @@
   <scm child.scm.connection.inherit.append.path="false" child.scm.developerConnection.inherit.append.path="false" child.scm.url.inherit.append.path="false">
     <connection>scm:git:https://github.com/ongres/scram.git</connection>
     <developerConnection>scm:git:git@github.com:ongres/scram.git</developerConnection>
-    <tag>HEAD</tag>
+    <tag>3.2</tag>
     <url>https://github.com/ongres/scram</url>
   </scm>
 
@@ -59,7 +59,7 @@
     <base.java.version>8</base.java.version>
     <maven.compiler.source>${base.java.version}</maven.compiler.source>
     <maven.compiler.target>${base.java.version}</maven.compiler.target>
-    <project.build.outputTimestamp>2025-09-16T19:29:12Z</project.build.outputTimestamp>
+    <project.build.outputTimestamp>2025-09-16T20:00:00Z</project.build.outputTimestamp>
     <!-- Dependency versions -->
     <jetbrains-annotations.version>26.0.2-1</jetbrains-annotations.version>
     <junit5.version>5.13.4</junit5.version>

e0b0cf99f054

fix(security): Timing Attack Vulnerability

https://github.com/ongres/scramJorge SolórzanoSep 16, 2025via ghsa

commit

3 files changed · +9 −4

checks/forbiddenapis.txt+2 −0 added

@@ -0,0 +1,2 @@
+
+java.util.Arrays#equals(byte[],byte[]) @ Replace with java.security.MessageDigest#isEqual(byte[],byte[])

scram-common/src/main/java/com/ongres/scram/common/ScramFunctions.java+4 −4 modified

@@ -7,8 +7,8 @@
 
 import static java.nio.charset.StandardCharsets.UTF_8;
 
+import java.security.MessageDigest;
 import java.security.SecureRandom;
-import java.util.Arrays;
 
 import com.ongres.scram.common.util.Preconditions;
 import org.jetbrains.annotations.NotNull;
@@ -190,8 +190,7 @@ public static boolean verifyClientProof(
     byte[] clientSignature = clientSignature(scramMechanism, storedKey, authMessage);
     byte[] clientKey = CryptoUtil.xor(clientSignature, clientProof);
     byte[] computedStoredKey = hash(scramMechanism, clientKey);
-
-    return Arrays.equals(storedKey, computedStoredKey);
+    return MessageDigest.isEqual(storedKey, computedStoredKey);
   }
 
   /**
@@ -205,7 +204,8 @@ public static boolean verifyClientProof(
    */
   public static boolean verifyServerSignature(
       ScramMechanism scramMechanism, byte[] serverKey, String authMessage, byte[] serverSignature) {
-    return Arrays.equals(serverSignature(scramMechanism, serverKey, authMessage), serverSignature);
+    byte[] computedServerSignature = serverSignature(scramMechanism, serverKey, authMessage);
+    return MessageDigest.isEqual(serverSignature, computedServerSignature);
   }
 
   /**

scram-parent/pom.xml+3 −0 modified

@@ -530,6 +530,9 @@
                 <!-- don't allow System.out or System.err: -->
                 <bundledSignature>jdk-system-out</bundledSignature>
               </bundledSignatures>
+              <signaturesFiles>
+                <signaturesFile>${checks.location}/forbiddenapis.txt</signaturesFile>
+              </signaturesFiles>
             </configuration>
             <executions>
               <execution>

Vulnerability mechanics

Generated by null/stub on May 9, 2026. Inputs: CWE entries + fix-commit diffs from this CVE's patches. Citations validated against bundle.

References

News mentions

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cvss	0.260
epss	0.000
exploit	0.000
kev	0.000
patch	-0.070
ransomware	0.000