Upstream information

CVE-2017-15705 at MITRE

Description

A denial of service vulnerability was identified that exists in Apache SpamAssassin before 3.4.2. The vulnerability arises with certain unclosed tags in emails that cause markup to be handled incorrectly leading to scan timeouts. In Apache SpamAssassin, using HTML::Parser, we setup an object and hook into the begin and end tag event handlers In both cases, the "open" event is immediately followed by a "close" event - even if the tag *does not* close in the HTML being parsed. Because of this, we are missing the "text" event to deal with the object normally. This can cause carefully crafted emails that might take more scan time than expected leading to a Denial of Service. The issue is possibly a bug or design decision in HTML::Parser that specifically impacts the way Apache SpamAssassin uses the module with poorly formed html. The exploit has been seen in the wild but not believed to have been purposefully part of a Denial of Service attempt. We are concerned that there may be attempts to abuse the vulnerability in the future.

SUSE information

Overall state of this security issue: Running

This issue is currently rated as having important severity.

CVSS v2 Scores
  National Vulnerability Database
Base Score 5
Vector AV:N/AC:L/Au:N/C:N/I:N/A:P
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Partial
CVSS v3 Scores
  National Vulnerability Database SUSE
Base Score 5.3 7.5
Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Access Vector Network Network
Access Complexity Low Low
Privileges Required None None
User Interaction None None
Scope Unchanged Unchanged
Confidentiality Impact None None
Integrity Impact None None
Availability Impact Low High
CVSSv3 Version 3 3
SUSE Bugzilla entry: 1108745 [RESOLVED / FIXED]

SUSE Security Advisories:

List of released packages

Product(s) Fixed package version(s) References
SUSE Linux Enterprise Desktop 12 SP4
  • perl-Mail-SpamAssassin >= 3.4.2-44.3.1
  • spamassassin >= 3.4.2-44.3.1
 Patchnames:
SUSE-SLE-DESKTOP-12-SP4-2019-1961
SUSE Linux Enterprise High Performance Computing 12 SP5
SUSE Linux Enterprise Server 12 SP5
  • perl-Mail-SpamAssassin >= 3.4.2-44.3.1
  • spamassassin >= 3.4.2-44.3.1
SUSE Linux Enterprise Module for Basesystem 15 SP1
  • perl-Mail-SpamAssassin >= 3.4.2-10.19
  • spamassassin >= 3.4.2-10.19
SUSE Linux Enterprise Module for Basesystem 15 SP2
  • perl-Mail-SpamAssassin >= 3.4.2-12.5.1
  • spamassassin >= 3.4.2-12.5.1
SUSE Linux Enterprise Module for Basesystem 15 SP3
  • perl-Mail-SpamAssassin >= 3.4.5-12.10.1
  • spamassassin >= 3.4.5-12.10.1
SUSE Linux Enterprise Module for Basesystem 15
  • perl-Mail-SpamAssassin >= 3.4.2-7.4.1
  • spamassassin >= 3.4.2-7.4.1
 Patchnames:
SUSE-SLE-Module-Basesystem-15-2019-2011
SUSE Linux Enterprise Module for Development Tools 15 SP1
  • perl-Mail-SpamAssassin-Plugin-iXhash2 >= 2.05-10.19
SUSE Linux Enterprise Module for Development Tools 15 SP2
  • perl-Mail-SpamAssassin-Plugin-iXhash2 >= 2.05-12.5.1
SUSE Linux Enterprise Module for Development Tools 15 SP3
  • perl-Mail-SpamAssassin-Plugin-iXhash2 >= 2.05-12.10.1
SUSE Linux Enterprise Module for Development Tools 15
  • perl-Mail-SpamAssassin-Plugin-iXhash2 >= 2.05-7.4.1
 Patchnames:
SUSE-SLE-Module-Development-Tools-15-2019-2011
SUSE Linux Enterprise Server 12 SP4
SUSE Linux Enterprise Server for SAP Applications 12 SP4
  • perl-Mail-SpamAssassin >= 3.4.2-44.3.1
  • spamassassin >= 3.4.2-44.3.1
 Patchnames:
SUSE-SLE-SERVER-12-SP4-2019-1961
openSUSE Leap 15.0
  • perl-Mail-SpamAssassin >= 3.4.2-lp150.6.3.1
  • perl-Mail-SpamAssassin-Plugin-iXhash2 >= 2.05-lp150.6.3.1
  • spamassassin >= 3.4.2-lp150.6.3.1
  • spamassassin-debuginfo >= 3.4.2-lp150.6.3.1
  • spamassassin-debugsource >= 3.4.2-lp150.6.3.1
 Patchnames:
openSUSE-2019-1831
openSUSE Tumbleweed
  • perl-Mail-SpamAssassin >= 3.4.6-71.3
  • perl-Mail-SpamAssassin-Plugin-iXhash2 >= 2.05-71.3
  • spamassassin >= 3.4.6-71.3
  • spamassassin-spamc >= 3.4.6-71.3
 Patchnames:
openSUSE Tumbleweed GA perl-Mail-SpamAssassin-3.4.6-71.3

Status of this issue by product and package

Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification.

Product(s) Source package State
HPE Helion OpenStack 8 spamassassin Released
SUSE CaaS Platform 4.0 spamassassin Already fixed
SUSE Enterprise Storage 5 spamassassin Released
SUSE Enterprise Storage 6 spamassassin Already fixed
SUSE Linux Enterprise Desktop 12 SP3 spamassassin Affected
SUSE Linux Enterprise Desktop 12 SP4 spamassassin Released
SUSE Linux Enterprise High Performance Computing 12 SP4 spamassassin Released
SUSE Linux Enterprise High Performance Computing 12 SP5 spamassassin Released
SUSE Linux Enterprise High Performance Computing 15 LTSS spamassassin In progress
SUSE Linux Enterprise High Performance Computing 15 SP1 LTSS spamassassin Already fixed
SUSE Linux Enterprise Module for Basesystem 15 spamassassin Released
SUSE Linux Enterprise Module for Basesystem 15 SP2 spamassassin Already fixed
SUSE Linux Enterprise Module for Development Tools 15 spamassassin Released
SUSE Linux Enterprise Module for Development Tools 15 SP2 spamassassin Already fixed
SUSE Linux Enterprise Point of Service Image Server 12 spamassassin Released
SUSE Linux Enterprise Server 11 SP3 LTSS spamassassin Affected
SUSE Linux Enterprise Server 11 SP4 spamassassin Affected
SUSE Linux Enterprise Server 12 LTSS spamassassin Affected
SUSE Linux Enterprise Server 12 SP1 LTSS spamassassin Affected
SUSE Linux Enterprise Server 12 SP2 BCL spamassassin Released
SUSE Linux Enterprise Server 12 SP2 ESPOS spamassassin Released
SUSE Linux Enterprise Server 12 SP2 LTSS spamassassin Released
SUSE Linux Enterprise Server 12 SP2 LTSS ERICSSON spamassassin Released
SUSE Linux Enterprise Server 12 SP2 LTSS SAP spamassassin Released
SUSE Linux Enterprise Server 12 SP3 spamassassin Affected
SUSE Linux Enterprise Server 12 SP3 BCL spamassassin Released
SUSE Linux Enterprise Server 12 SP3 ESPOS spamassassin Released
SUSE Linux Enterprise Server 12 SP3 LTSS spamassassin Released
SUSE Linux Enterprise Server 12 SP4 spamassassin Released
SUSE Linux Enterprise Server 12 SP4 ESPOS spamassassin Released
SUSE Linux Enterprise Server 12 SP4 LTSS spamassassin Released
SUSE Linux Enterprise Server 12 SP5 spamassassin Released
SUSE Linux Enterprise Server 15 LTSS spamassassin In progress
SUSE Linux Enterprise Server 15 SP1 Business Critical Linux spamassassin Already fixed
SUSE Linux Enterprise Server 15 SP1 LTSS spamassassin Already fixed
SUSE Linux Enterprise Server ESPOS 15 spamassassin In progress
SUSE Linux Enterprise Server for SAP Applications 12 SP2 spamassassin Released
SUSE Linux Enterprise Server for SAP Applications 12 SP3 spamassassin Released
SUSE Linux Enterprise Server for SAP Applications 12 SP4 spamassassin Released
SUSE Linux Enterprise Server for SAP Applications 12 SP5 spamassassin Released
SUSE Linux Enterprise Server for SAP Applications 15 spamassassin In progress
SUSE Linux Enterprise Server for SAP Applications 15 SP1 spamassassin Already fixed
SUSE Manager Proxy 4.0 spamassassin Already fixed
SUSE Manager Retail Branch Server 4.0 spamassassin Already fixed
SUSE Manager Server 4.0 spamassassin Already fixed
SUSE OpenStack Cloud 7 spamassassin Released
SUSE OpenStack Cloud 8 spamassassin Released
SUSE OpenStack Cloud 9 spamassassin Released
SUSE OpenStack Cloud Crowbar 8 spamassassin Released
SUSE OpenStack Cloud Crowbar 9 spamassassin Released