Upstream information

CVE-2019-18276 at MITRE

Description

An issue was discovered in disable_priv_mode in shell.c in GNU Bash through 5.0 patch 11. By default, if Bash is run with its effective UID not equal to its real UID, it will drop privileges by setting its effective UID to its real UID. However, it does so incorrectly. On Linux and other systems that support "saved UID" functionality, the saved UID is not dropped. An attacker with command execution in the shell can use "enable -f" for runtime loading of a new builtin, which can be a shared object that calls setuid() and therefore regains privileges. However, binaries running with an effective UID of 0 are unaffected.

SUSE information

Overall state of this security issue: Ignore

This issue is currently rated as having low severity.

CVSS v3 Scores
  SUSE
Base Score 3.6
Vector AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N
Access Vector Local
Access Complexity High
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality Impact Low
Integrity Impact Low
Availability Impact None
CVSSv3 Version 3.1
SUSE Bugzilla entry: 1158028 [RESOLVED / WONTFIX]

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Please note that this evaluation state might be work in progress, incomplete or outdated.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 bash Ignore
CaaS Platform 2.0 bash Ignore
CaaS Platform 3.0 bash Ignore
SUSE Linux Enterprise Desktop 12 SP4 bash Ignore
SUSE Linux Enterprise High Performance Computing 12 bash Ignore
SUSE Linux Enterprise Module for Basesystem 15 GA bash Ignore
SUSE Linux Enterprise Module for Basesystem 15 SP1 bash Ignore
SUSE Linux Enterprise SDK 12 SP4 bash Ignore
SUSE Linux Enterprise SDK 12 SP5 bash Ignore
SUSE Linux Enterprise Server 11 SP4 LTSS bash Ignore
SUSE Linux Enterprise Server 12 SP1 LTSS bash Ignore
SUSE Linux Enterprise Server 12 SP2 LTSS bash Ignore
SUSE Linux Enterprise Server 12 SP3 LTSS bash Ignore
SUSE Linux Enterprise Server 12 SP4 bash Ignore
SUSE Linux Enterprise Server 12 SP5 bash Ignore
SUSE Linux Enterprise Server for SAP Applications 12 SP2 bash Ignore
SUSE Linux Enterprise Server for SAP Applications 12 SP3 bash Ignore
SUSE Linux Enterprise Server for SAP Applications 12 SP4 bash Ignore
SUSE Linux Enterprise Server for SAP Applications 12 SP5 bash Ignore
SUSE Linux Enterprise Workstation Extension 12 SP4 bash Ignore
SUSE Linux Enterprise Workstation Extension 12 SP5 bash Ignore