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openSUSE 15.6: 2025:1550-1 important: openssl-3 timing vulnerability

opensuse
Calendar Grey May 14, 2025
Dist Opensuse Esm H88
This notice highlights significant security enhancements for openssl-3, focusing on serious vulnerabilities related to timing attacks and corresponding fixes.
An update that solves one vulnerability and has four security fixes can now be installed.

Description

This update for openssl-3 fixes the following issues:

Security:

* CVE-2025-27587: Timing side channel vulnerability in the P-384

implementation when used with ECDSA in the PPC architecture (bsc#1240366).

* Missing null pointer check before accessing handshake_func in ssl_lib.c

(bsc#1240607).

FIPS:

* Disabling EMS in OpenSSL configuration prevents sshd from starting

(bsc#1230959, bsc#1232326, bsc#1231748).

Topics%20covered

Topics Covered

security advisory important timing attack SUSE openssl patch instructions

Patch

## 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 SUSE-2025-1550=1 openSUSE-SLE-15.6-2025-1550=1

* Basesystem Module 15-SP6

zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP6-2025-1550=1

Package List

* openSUSE Leap 15.6 (aarch64 ppc64le s390x x86_64 i586)

* libopenssl3-3.1.4-150600.5.27.1

* libopenssl-3-fips-provider-debuginfo-3.1.4-150600.5.27.1

* openssl-3-3.1.4-150600.5.27.1

* openssl-3-debuginfo-3.1.4-150600.5.27.1

* libopenssl-3-devel-3.1.4-150600.5.27.1

* openssl-3-debugsource-3.1.4-150600.5.27.1

* libopenssl3-debuginfo-3.1.4-150600.5.27.1

* libopenssl-3-fips-provider-3.1.4-150600.5.27.1

* openSUSE Leap 15.6 (x86_64)

* libopenssl3-32bit-debuginfo-3.1.4-150600.5.27.1

* libopenssl-3-devel-32bit-3.1.4-150600.5.27.1

* libopenssl3-32bit-3.1.4-150600.5.27.1

* libopenssl-3-fips-provider-32bit-3.1.4-150600.5.27.1

* libopenssl-3-fips-provider-32bit-debuginfo-3.1.4-150600.5.27.1

* openSUSE Leap 15.6 (noarch)

* openssl-3-doc-3.1.4-150600.5.27.1

* openSUSE Leap 15.6 (aarch64_ilp32)

* libopenssl3-64bit-debuginfo-3.1.4-150600.5.27.1

* libopenssl-3-devel-64bit-3.1.4-150600.5.27.1

* libopenssl-3-fips-provider-64bit-debuginfo-3.1.4-150600.5.27.1

* libopenssl-3-fips-provider-64bit-3.1.4-150600.5.27.1

*...

Read the Full Advisory

References

* bsc#1230959

* bsc#1231748

* bsc#1232326

* bsc#1240366

* bsc#1240607

## References:

* https://www.suse.com/security/cve/CVE-2025-27587.html

* https://bugzilla.suse.com/show_bug.cgi?id=1230959

* https://bugzilla.suse.com/show_bug.cgi?id=1231748

* https://bugzilla.suse.com/show_bug.cgi?id=1232326

* https://bugzilla.suse.com/show_bug.cgi?id=1240366

* https://bugzilla.suse.com/show_bug.cgi?id=1240607

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2025:1550-1
Release Date: 2025-05-14T17:05:27Z
Affected Products: * Basesystem Module 15-SP6 * openSUSE Leap 15.6 * SUSE Linux Enterprise Desktop 15 SP6 * SUSE Linux Enterprise Real Time 15 SP6 * SUSE Linux Enterprise Server 15 SP6 * SUSE Linux Enterprise Server for SAP Applications 15 SP6

Topics%20covered

Topics Covered

security advisory important timing attack SUSE openssl patch instructions

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