Upstream information

CVE-2020-6096 at MITRE

Description

An exploitable signed comparison vulnerability exists in the ARMv7 memcpy() implementation of GNU glibc 2.30.9000. Calling memcpy() (on ARMv7 targets that utilize the GNU glibc implementation) with a negative value for the 'num' parameter results in a signed comparison vulnerability. If an attacker underflows the 'num' parameter to memcpy(), this vulnerability could lead to undefined behavior such as writing to out-of-bounds memory and potentially remote code execution. Furthermore, this memcpy() implementation allows for program execution to continue in scenarios where a segmentation fault or crash should have occurred. The dangers occur in that subsequent execution and iterations of this code will be executed with this corrupted data.

SUSE information

Overall state of this security issue: Does not affect SUSE products

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
Base Score 8.1
Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Access Vector Network
Access Complexity High
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact High
Integrity Impact High
Availability Impact High
CVSSv3 Version 3.1
SUSE Bugzilla entry: 1168425 [RESOLVED / INVALID]

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Please note that this evaluation state might be work in progress, incomplete or outdated.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
CaaS Platform 1.0 glibc Not affected
CaaS Platform 2.0 glibc Not affected
CaaS Platform 3.0 glibc Not affected
SUSE Business Critical Linux 12 SP2 glibc Not affected
SUSE Business Critical Linux 12 SP3 glibc Not affected
SUSE Linux Enterprise High Performance Computing 12 glibc Not affected
SUSE Linux Enterprise High Performance Computing ESPOS 15 GA glibc Not affected
SUSE Linux Enterprise High Performance Computing LTSS 15 GA glibc Not affected
SUSE Linux Enterprise Module for Basesystem 15 SP1 glibc Not affected
SUSE Linux Enterprise Module for Development Tools 15 SP1 glibc Not affected
SUSE Linux Enterprise SDK 12 SP4 glibc Not affected
SUSE Linux Enterprise SDK 12 SP5 glibc Not affected
SUSE Linux Enterprise Server 11 SP4 LTSS glibc Not affected
SUSE Linux Enterprise Server 12 SP1 LTSS glibc Not affected
SUSE Linux Enterprise Server 12 SP2 LTSS glibc Not affected
SUSE Linux Enterprise Server 12 SP3 LTSS glibc Not affected
SUSE Linux Enterprise Server 12 SP4 glibc Not affected
SUSE Linux Enterprise Server 12 SP5 glibc Not affected
SUSE Linux Enterprise Server 15 GA LTSS glibc Not affected
SUSE Linux Enterprise Server for SAP Applications 12 SP2 glibc Not affected
SUSE Linux Enterprise Server for SAP Applications 12 SP3 glibc Not affected
SUSE Linux Enterprise Server for SAP Applications 12 SP4 glibc Not affected
SUSE Linux Enterprise Server for SAP Applications 12 SP5 glibc Not affected