Upstream information

CVE-2020-24240 at MITRE

Description

GNU Bison before 3.7.1 has a use-after-free in _obstack_free in lib/obstack.c (called from gram_lex) when a '\0' byte is encountered. NOTE: there is a risk only if Bison is used with untrusted input, and the observed bug happens to cause unsafe behavior with a specific compiler/architecture. The bug report was intended to show that a crash may occur in Bison itself, not that a crash may occur in code that is generated by Bison.

SUSE information

Overall state of this security issue: Resolved

This issue is currently rated as having low severity.

CVSS v2 Scores
  National Vulnerability Database
Base Score 7.1
Vector AV:N/AC:M/Au:N/C:N/I:N/A:C
Access Vector Network
Access Complexity Medium
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Complete
CVSS v3 Scores
  National Vulnerability Database SUSE
Base Score 5.5 3.3
Vector CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Attack Vector Local Local
Attack Complexity Low Low
Privileges Required None Low
User Interaction Required None
Scope Unchanged Unchanged
Confidentiality Impact None None
Integrity Impact None None
Availability Impact High Low
CVSSv3 Version 3.1 3.1
SUSE Bugzilla entry: 1175887 [RESOLVED / FIXED]

No SUSE Security Announcements cross referenced.


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Please note that this evaluation state might be work in progress, incomplete or outdated.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. The updates are grouped by state of their lifecycle. SUSE product lifecycles are documented on the lifecycle page.

Product(s) Source package State
Products under general support and receiving all security fixes.
SUSE Enterprise Storage 7.1 bison Not affected
SUSE Linux Enterprise Desktop 15 SP5 bison Not affected
SUSE Linux Enterprise High Performance Computing 12 SP5 bison Not affected
SUSE Linux Enterprise High Performance Computing 15 SP5 bison Not affected
SUSE Linux Enterprise Module for Basesystem 15 SP5 bison Not affected
SUSE Linux Enterprise Module for Development Tools 15 SP5 bison Not affected
SUSE Linux Enterprise Real Time 15 SP3 bison Not affected
SUSE Linux Enterprise Server 12 SP5 bison Not affected
SUSE Linux Enterprise Server 12-LTSS bison Not affected
SUSE Linux Enterprise Server 15 SP5 bison Not affected
SUSE Linux Enterprise Server for SAP Applications 12 SP5 bison Not affected
SUSE Linux Enterprise Server for SAP Applications 15 SP4 bison Not affected
SUSE Linux Enterprise Server for SAP Applications 15 SP5 bison Not affected
SUSE Linux Enterprise Software Development Kit 12 SP5 bison Not affected
SUSE Manager Proxy 4.3 bison Not affected
SUSE Manager Retail Branch Server 4.3 bison Not affected
SUSE Manager Server 4.3 bison Not affected
Products under Long Term Service Pack support and receiving important and critical security fixes.
SUSE Linux Enterprise Desktop 15 SP4 bison Not affected
SUSE Linux Enterprise High Performance Computing 15 bison Not affected
SUSE Linux Enterprise High Performance Computing 15 SP1 bison Not affected
SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS bison Not affected
SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS bison Not affected
SUSE Linux Enterprise High Performance Computing 15 SP2 bison Not affected
SUSE Linux Enterprise High Performance Computing 15 SP2-ESPOS bison Not affected
SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS bison Not affected
SUSE Linux Enterprise High Performance Computing 15 SP3 bison Not affected
SUSE Linux Enterprise High Performance Computing 15 SP3-ESPOS bison Not affected
SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS bison Not affected
SUSE Linux Enterprise High Performance Computing 15 SP4 bison Not affected
SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS bison Not affected
SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS bison Not affected
SUSE Linux Enterprise High Performance Computing 15-ESPOS bison Not affected
SUSE Linux Enterprise High Performance Computing 15-LTSS bison Not affected
SUSE Linux Enterprise Module for Basesystem 15 SP2 bison Not affected
SUSE Linux Enterprise Module for Basesystem 15 SP3 bison Not affected
SUSE Linux Enterprise Module for Basesystem 15 SP4 bison Not affected
SUSE Linux Enterprise Module for Development Tools 15 SP2 bison Not affected
SUSE Linux Enterprise Module for Development Tools 15 SP3 bison Not affected
SUSE Linux Enterprise Module for Development Tools 15 SP4 bison Not affected
SUSE Linux Enterprise Server 12 SP2-BCL bison Not affected
SUSE Linux Enterprise Server 15 SP2 bison Not affected
SUSE Linux Enterprise Server 15 SP2-LTSS bison Not affected
SUSE Linux Enterprise Server 15 SP3 bison Not affected
SUSE Linux Enterprise Server 15 SP3-LTSS bison Not affected
SUSE Linux Enterprise Server 15 SP4 bison Not affected
SUSE Linux Enterprise Server 15 SP4-LTSS bison Not affected
SUSE Linux Enterprise Server 15-ESPOS bison Not affected
SUSE Linux Enterprise Server Business Critical Linux 15 SP1 bison Not affected
SUSE Linux Enterprise Server Business Critical Linux 15 SP2 bison Not affected
SUSE Linux Enterprise Server for SAP Applications 15 bison Not affected
SUSE Linux Enterprise Server for SAP Applications 15 SP1 bison Not affected
SUSE Linux Enterprise Server for SAP Applications 15 SP2 bison Not affected
SUSE Linux Enterprise Server for SAP Applications 15 SP3 bison Not affected
Products past their end of life and not receiving proactive updates anymore.
HPE Helion OpenStack 8 bison Not affected
SUSE CaaS Platform 4.0 bison Not affected
SUSE CaaS Platform 4.5 bison Not affected
SUSE Enterprise Storage 6 bison Not affected
SUSE Enterprise Storage 7 bison Not affected
SUSE Linux Enterprise Desktop 11 SP4 bison Not affected
SUSE Linux Enterprise Desktop 12 bison Not affected
SUSE Linux Enterprise Desktop 12 SP1 bison Not affected
SUSE Linux Enterprise Desktop 12 SP2 bison Not affected
SUSE Linux Enterprise Desktop 12 SP3 bison Not affected
SUSE Linux Enterprise Desktop 12 SP4 bison Not affected
SUSE Linux Enterprise Desktop 15 bison Not affected
SUSE Linux Enterprise Desktop 15 SP1 bison Not affected
SUSE Linux Enterprise Desktop 15 SP2 bison Not affected
SUSE Linux Enterprise Desktop 15 SP3 bison Not affected
SUSE Linux Enterprise High Performance Computing 12 SP4 bison Affected
SUSE Linux Enterprise Module for Basesystem 15 bison Not affected
SUSE Linux Enterprise Module for Basesystem 15 SP1 bison Not affected
SUSE Linux Enterprise Module for Development Tools 15 bison Not affected
SUSE Linux Enterprise Module for Development Tools 15 SP1 bison Not affected
SUSE Linux Enterprise Real Time 15 SP2 bison Not affected
SUSE Linux Enterprise Real Time 15 SP4 bison Not affected
SUSE Linux Enterprise Server 11 SP1 bison Not affected
SUSE Linux Enterprise Server 11 SP3 bison Not affected
SUSE Linux Enterprise Server 11 SP3-LTSS bison Not affected
SUSE Linux Enterprise Server 11 SP4 bison Not affected
SUSE Linux Enterprise Server 11 SP4 LTSS bison Not affected
SUSE Linux Enterprise Server 11 SP4-LTSS bison Not affected
SUSE Linux Enterprise Server 12 bison Not affected
SUSE Linux Enterprise Server 12 SP1 bison Not affected
SUSE Linux Enterprise Server 12 SP1-LTSS bison Not affected
SUSE Linux Enterprise Server 12 SP2 bison Not affected
SUSE Linux Enterprise Server 12 SP2-ESPOS bison Not affected
SUSE Linux Enterprise Server 12 SP2-LTSS bison Unsupported
SUSE Linux Enterprise Server 12 SP3 bison Not affected
SUSE Linux Enterprise Server 12 SP3-BCL bison Unsupported
SUSE Linux Enterprise Server 12 SP3-ESPOS bison Not affected
SUSE Linux Enterprise Server 12 SP3-LTSS bison Unsupported
SUSE Linux Enterprise Server 12 SP4 bison Not affected
SUSE Linux Enterprise Server 12 SP4-ESPOS bison Not affected
SUSE Linux Enterprise Server 12 SP4-LTSS bison Not affected
SUSE Linux Enterprise Server 15 bison Not affected
SUSE Linux Enterprise Server 15 SP1 bison Not affected
SUSE Linux Enterprise Server 15 SP1-BCL bison Not affected
SUSE Linux Enterprise Server 15 SP1-LTSS bison Not affected
SUSE Linux Enterprise Server 15 SP2-BCL bison Not affected
SUSE Linux Enterprise Server 15 SP3-BCL bison Not affected
SUSE Linux Enterprise Server 15-LTSS bison Not affected
SUSE Linux Enterprise Server for Raspberry Pi 12 SP2 bison Not affected
SUSE Linux Enterprise Server for SAP Applications 11 SP4 bison Not affected
SUSE Linux Enterprise Server for SAP Applications 12 bison Not affected
SUSE Linux Enterprise Server for SAP Applications 12 SP1 bison Not affected
SUSE Linux Enterprise Server for SAP Applications 12 SP2 bison Unsupported
SUSE Linux Enterprise Server for SAP Applications 12 SP3 bison Unsupported
SUSE Linux Enterprise Server for SAP Applications 12 SP4 bison Not affected
SUSE Linux Enterprise Software Development Kit 11 SP4 bison Not affected
SUSE Linux Enterprise Software Development Kit 12 bison Not affected
SUSE Linux Enterprise Software Development Kit 12 SP1 bison Not affected
SUSE Linux Enterprise Software Development Kit 12 SP2 bison Not affected
SUSE Linux Enterprise Software Development Kit 12 SP3 bison Not affected
SUSE Linux Enterprise Software Development Kit 12 SP4 bison Not affected
SUSE Manager Proxy 4.0 bison Not affected
SUSE Manager Proxy 4.1 bison Not affected
SUSE Manager Proxy 4.2 bison Not affected
SUSE Manager Retail Branch Server 4.0 bison Not affected
SUSE Manager Retail Branch Server 4.1 bison Not affected
SUSE Manager Retail Branch Server 4.2 bison Not affected
SUSE Manager Server 4.0 bison Not affected
SUSE Manager Server 4.1 bison Not affected
SUSE Manager Server 4.2 bison Not affected
SUSE OpenStack Cloud 7 bison Not affected
SUSE OpenStack Cloud 8 bison Not affected
SUSE OpenStack Cloud 9 bison Not affected
SUSE OpenStack Cloud Crowbar 8 bison Not affected
SUSE OpenStack Cloud Crowbar 9 bison Not affected


SUSE Timeline for this CVE

CVE page created: Tue Aug 25 20:48:10 2020
CVE page last modified: Thu Feb 22 17:14:21 2024