SUSE-SU-2026:1162-1: important: Security update for python-tornado

[SLE-UPDATES]

# Security update for python-tornado

Announcement ID: SUSE-SU-2026:1162-1  
Release Date: 2026-03-31T22:02:19Z  
Rating: important  
References:

  * bsc#1254903
  * bsc#1254905
  * bsc#1259553
  * bsc#1259630

  
Cross-References:

  * CVE-2025-67724
  * CVE-2025-67725
  * CVE-2026-31958

  
CVSS scores:

  * CVE-2025-67724 ( SUSE ):  5.3
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
  * CVE-2025-67724 ( SUSE ):  5.4 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
  * CVE-2025-67724 ( NVD ):  5.4 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
  * CVE-2025-67724 ( NVD ):  6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
  * CVE-2025-67725 ( SUSE ):  8.7
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
  * CVE-2025-67725 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2025-67725 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-31958 ( SUSE ):  8.7
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-31958 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-31958 ( NVD ):  8.7
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
  * CVE-2026-31958 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

  
Affected Products:

  * SUSE Linux Enterprise Desktop 12
  * SUSE Linux Enterprise Desktop 12 SP1
  * SUSE Linux Enterprise Desktop 12 SP2
  * SUSE Linux Enterprise Desktop 12 SP3
  * SUSE Linux Enterprise Desktop 12 SP4
  * SUSE Linux Enterprise High Performance Computing 12 SP2
  * SUSE Linux Enterprise High Performance Computing 12 SP3
  * SUSE Linux Enterprise High Performance Computing 12 SP4
  * SUSE Linux Enterprise High Performance Computing 12 SP5
  * SUSE Linux Enterprise Server 12
  * SUSE Linux Enterprise Server 12 SP1
  * SUSE Linux Enterprise Server 12 SP2
  * SUSE Linux Enterprise Server 12 SP3
  * SUSE Linux Enterprise Server 12 SP4
  * SUSE Linux Enterprise Server 12 SP5
  * SUSE Linux Enterprise Server for SAP Applications 12
  * SUSE Linux Enterprise Server for SAP Applications 12 SP1
  * SUSE Linux Enterprise Server for SAP Applications 12 SP2
  * SUSE Linux Enterprise Server for SAP Applications 12 SP3
  * SUSE Linux Enterprise Server for SAP Applications 12 SP4
  * SUSE Linux Enterprise Server for SAP Applications 12 SP5
  * SUSE Linux Enterprise Server for the Raspberry Pi 12-SP2
  * SUSE Manager Client Tools for SLE 12

  
  
An update that solves three vulnerabilities and has one security fix can now be
installed.

## Description:

This update for python-tornado fixes the following issues:

  * CVE-2025-67724: missing validation of the supplied reason phrase
    (bsc#1254903).
  * CVE-2025-67725: Denial of Service (DoS) via maliciously crafted HTTP request
    caused by the HTTPHeaders.add method (bsc#1254905).
  * CVE-2026-31958: parsing large multipart bodies with many parts can cause a
    denial of service (bsc#1259553).
  * incomplete validation of cookie attributes allows for injection of user-
    controlled values in other cookie attributes (bsc#1259630).

## 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:

  * SUSE Manager Client Tools for SLE 12  
    zypper in -t patch SUSE-SLE-Manager-Tools-12-2026-1162=1

## Package List:

  * SUSE Manager Client Tools for SLE 12 (aarch64 ppc64le s390x x86_64)
    * python3-tornado-4.2.1-17.18.1
    * python-tornado-debuginfo-4.2.1-17.18.1
    * python-tornado-debugsource-4.2.1-17.18.1
    * python-tornado-4.2.1-17.18.1

## References:

  * https://www.suse.com/security/cve/CVE-2025-67724.html
  * https://www.suse.com/security/cve/CVE-2025-67725.html
  * https://www.suse.com/security/cve/CVE-2026-31958.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1254903
  * https://bugzilla.suse.com/show_bug.cgi?id=1254905
  * https://bugzilla.suse.com/show_bug.cgi?id=1259553
  * https://bugzilla.suse.com/show_bug.cgi?id=1259630

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