# Security update for ed25519-java

Announcement ID: SUSE-SU-2025:1029-1  
Release Date: 2025-03-26T13:11:52Z  
Rating: important  
References:

  * bsc#1239551

  
Cross-References:

  * CVE-2020-36843

  
CVSS scores:

  * CVE-2020-36843 ( SUSE ):  8.7
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
  * CVE-2020-36843 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
  * CVE-2020-36843 ( NVD ):  4.3 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N

  
Affected Products:

  * Development Tools Module 15-SP6
  * openSUSE Leap 15.6
  * SUSE Enterprise Storage 7.1
  * SUSE Linux Enterprise Desktop 15 SP6
  * SUSE Linux Enterprise High Performance Computing 15 SP3
  * SUSE Linux Enterprise High Performance Computing 15 SP4
  * SUSE Linux Enterprise High Performance Computing 15 SP5
  * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4
  * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5
  * SUSE Linux Enterprise High Performance Computing LTSS 15 SP3
  * SUSE Linux Enterprise High Performance Computing LTSS 15 SP4
  * SUSE Linux Enterprise High Performance Computing LTSS 15 SP5
  * SUSE Linux Enterprise Real Time 15 SP6
  * SUSE Linux Enterprise Server 15 SP3
  * SUSE Linux Enterprise Server 15 SP3 LTSS
  * SUSE Linux Enterprise Server 15 SP4
  * SUSE Linux Enterprise Server 15 SP4 LTSS
  * SUSE Linux Enterprise Server 15 SP5
  * SUSE Linux Enterprise Server 15 SP5 LTSS
  * SUSE Linux Enterprise Server 15 SP6
  * SUSE Linux Enterprise Server for SAP Applications 15 SP3
  * SUSE Linux Enterprise Server for SAP Applications 15 SP4
  * SUSE Linux Enterprise Server for SAP Applications 15 SP5
  * SUSE Linux Enterprise Server for SAP Applications 15 SP6

  
  
An update that solves one vulnerability can now be installed.

## Description:

This update for ed25519-java fixes the following issues:

  * CVE-2020-36843: Fixed no check performed on scalar to avoid signature
    malleability (bsc#1239551)

## Patch Instructions:

To install this SUSE update use the SUSE recommended installation methods like
YaST online_update or "zypper patch".  
Alternatively you can run the command listed for your product:

  * openSUSE Leap 15.6  
    zypper in -t patch openSUSE-SLE-15.6-2025-1029=1

  * Development Tools Module 15-SP6  
    zypper in -t patch SUSE-SLE-Module-Development-Tools-15-SP6-2025-1029=1

  * SUSE Linux Enterprise High Performance Computing LTSS 15 SP3  
    zypper in -t patch SUSE-SLE-Product-HPC-15-SP3-LTSS-2025-1029=1

  * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4  
    zypper in -t patch SUSE-SLE-Product-HPC-15-SP4-ESPOS-2025-1029=1

  * SUSE Linux Enterprise High Performance Computing LTSS 15 SP4  
    zypper in -t patch SUSE-SLE-Product-HPC-15-SP4-LTSS-2025-1029=1

  * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5  
    zypper in -t patch SUSE-SLE-Product-HPC-15-SP5-ESPOS-2025-1029=1

  * SUSE Linux Enterprise High Performance Computing LTSS 15 SP5  
    zypper in -t patch SUSE-SLE-Product-HPC-15-SP5-LTSS-2025-1029=1

  * SUSE Linux Enterprise Server 15 SP3 LTSS  
    zypper in -t patch SUSE-SLE-Product-SLES-15-SP3-LTSS-2025-1029=1

  * SUSE Linux Enterprise Server 15 SP4 LTSS  
    zypper in -t patch SUSE-SLE-Product-SLES-15-SP4-LTSS-2025-1029=1

  * SUSE Linux Enterprise Server 15 SP5 LTSS  
    zypper in -t patch SUSE-SLE-Product-SLES-15-SP5-LTSS-2025-1029=1

  * SUSE Linux Enterprise Server for SAP Applications 15 SP3  
    zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP3-2025-1029=1

  * SUSE Linux Enterprise Server for SAP Applications 15 SP4  
    zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP4-2025-1029=1

  * SUSE Linux Enterprise Server for SAP Applications 15 SP5  
    zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP5-2025-1029=1

  * SUSE Enterprise Storage 7.1  
    zypper in -t patch SUSE-Storage-7.1-2025-1029=1

## Package List:

  * openSUSE Leap 15.6 (noarch)
    * ed25519-java-javadoc-0.3.0-150200.5.9.1
    * ed25519-java-0.3.0-150200.5.9.1
  * Development Tools Module 15-SP6 (noarch)
    * ed25519-java-0.3.0-150200.5.9.1
  * SUSE Linux Enterprise High Performance Computing LTSS 15 SP3 (noarch)
    * ed25519-java-0.3.0-150200.5.9.1
  * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4 (noarch)
    * ed25519-java-0.3.0-150200.5.9.1
  * SUSE Linux Enterprise High Performance Computing LTSS 15 SP4 (noarch)
    * ed25519-java-0.3.0-150200.5.9.1
  * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 (noarch)
    * ed25519-java-0.3.0-150200.5.9.1
  * SUSE Linux Enterprise High Performance Computing LTSS 15 SP5 (noarch)
    * ed25519-java-0.3.0-150200.5.9.1
  * SUSE Linux Enterprise Server 15 SP3 LTSS (noarch)
    * ed25519-java-0.3.0-150200.5.9.1
  * SUSE Linux Enterprise Server 15 SP4 LTSS (noarch)
    * ed25519-java-0.3.0-150200.5.9.1
  * SUSE Linux Enterprise Server 15 SP5 LTSS (noarch)
    * ed25519-java-0.3.0-150200.5.9.1
  * SUSE Linux Enterprise Server for SAP Applications 15 SP3 (noarch)
    * ed25519-java-0.3.0-150200.5.9.1
  * SUSE Linux Enterprise Server for SAP Applications 15 SP4 (noarch)
    * ed25519-java-0.3.0-150200.5.9.1
  * SUSE Linux Enterprise Server for SAP Applications 15 SP5 (noarch)
    * ed25519-java-0.3.0-150200.5.9.1
  * SUSE Enterprise Storage 7.1 (noarch)
    * ed25519-java-0.3.0-150200.5.9.1

## References:

  * https://www.suse.com/security/cve/CVE-2020-36843.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1239551