Upstream information

CVE-2021-20235 at MITRE

Description

There's a flaw in the zeromq server in versions before 4.3.3 in src/decoder_allocators.hpp. The decoder static allocator could have its sized changed, but the buffer would remain the same as it is a static buffer. A remote, unauthenticated attacker who sends a crafted request to the zeromq server could trigger a buffer overflow WRITE of arbitrary data if CURVE/ZAP authentication is not enabled. The greatest impact of this flaw is to application availability, data integrity, and confidentiality.

SUSE information

Overall state of this security issue: Resolved

This issue is currently rated as having important severity.

CVSS v2 Scores
  National Vulnerability Database
Base Score 6.8
Vector AV:N/AC:M/Au:N/C:P/I:P/A:P
Access Vector Network
Access Complexity Medium
Authentication None
Confidentiality Impact Partial
Integrity Impact Partial
Availability Impact Partial
CVSS v3 Scores
  National Vulnerability Database SUSE
Base Score 8.1 8.1
Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Access Vector Network Network
Access Complexity High High
Privileges Required None None
User Interaction None None
Scope Unchanged Unchanged
Confidentiality Impact High High
Integrity Impact High High
Availability Impact High High
CVSSv3 Version 3.1 3.1
SUSE Bugzilla entry: 1188236 [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Please note that this evaluation state might be work in progress, incomplete or outdated.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.

Product(s) Source package State
SUSE CaaS Platform 4.0 zeromq Not affected
SUSE Enterprise Storage 6 zeromq Not affected
SUSE Linux Enterprise Desktop 12 SP5 zeromq Not affected
SUSE Linux Enterprise Desktop 15 SP1 zeromq Not affected
SUSE Linux Enterprise Desktop 15 SP2 zeromq Not affected
SUSE Linux Enterprise High Performance Computing 12 zeromq Not affected
SUSE Linux Enterprise High Performance Computing 15 LTSS zeromq Not affected
SUSE Linux Enterprise High Performance Computing 15 SP1 zeromq Not affected
SUSE Linux Enterprise High Performance Computing 15 SP1 LTSS zeromq Not affected
SUSE Linux Enterprise High Performance Computing 15 SP2 zeromq Not affected
SUSE Linux Enterprise Module for Advanced Systems Management 12 zeromq Not affected
SUSE Linux Enterprise Module for Basesystem 15 SP1 zeromq Not affected
SUSE Linux Enterprise Module for Basesystem 15 SP2 zeromq Not affected
SUSE Linux Enterprise Point of Service Image Server 12 SP2 zeromq Not affected
SUSE Linux Enterprise Server 12 zeromq Not affected
SUSE Linux Enterprise Server 12 SP3 zeromq Not affected
SUSE Linux Enterprise Server 12 SP4 zeromq Not affected
SUSE Linux Enterprise Server 12 SP5 zeromq Not affected
SUSE Linux Enterprise Server 15 ESPOS zeromq Not affected
SUSE Linux Enterprise Server 15 LTSS zeromq Not affected
SUSE Linux Enterprise Server 15 SP1 zeromq Not affected
SUSE Linux Enterprise Server 15 SP1 LTSS zeromq Not affected
SUSE Linux Enterprise Server 15 SP2 zeromq Not affected
SUSE Linux Enterprise Server Business Critical Linux 15 SP1 zeromq Not affected
SUSE Linux Enterprise Server for SAP Applications 12 zeromq Not affected
SUSE Linux Enterprise Server for SAP Applications 12 SP3 zeromq Not affected
SUSE Linux Enterprise Server for SAP Applications 12 SP4 zeromq Not affected
SUSE Linux Enterprise Server for SAP Applications 12 SP5 zeromq Not affected
SUSE Linux Enterprise Server for SAP Applications 15 zeromq Not affected
SUSE Linux Enterprise Server for SAP Applications 15 SP1 zeromq Not affected
SUSE Linux Enterprise Server for SAP Applications 15 SP2 zeromq Not affected
SUSE Linux Enterprise Storage 6 zeromq Not affected
SUSE Linux Enterprise Storage 7 zeromq Not affected
SUSE Linux Enterprise Workstation Extension 12 SP5 zeromq Not affected
SUSE Manager Client Tools Beta for RHEL and ES 8 zeromq Not affected
SUSE Manager Client Tools Beta for SLE 12 zeromq Not affected
SUSE Manager Client Tools for RHEL and ES 8 zeromq Not affected
SUSE Manager Client Tools for SLE 12 zeromq Not affected
SUSE Manager Proxy 4.0 zeromq Not affected
SUSE Manager Proxy 4.1 zeromq Not affected
SUSE Manager Retail Branch Server 4.0 zeromq Not affected
SUSE Manager Retail Branch Server 4.1 zeromq Not affected
SUSE Manager Server 4.0 zeromq Not affected
SUSE Manager Server 4.1 zeromq Not affected