681726 – (CVE-2019-9924) <app-shells/bash-4.4_beta2: BASH_CMD is writable in restricted bash shells

Bug 681726 (CVE-2019-9924) - <app-shells/bash-4.4_beta2: BASH_CMD is writable in restricted bash shells

Summary: <app-shells/bash-4.4_beta2: BASH_CMD is writable in restricted bash shells

Status:	RESOLVED OBSOLETE

Alias:	CVE-2019-9924

Product:	Gentoo Security
Classification:	Unclassified
Component:	Vulnerabilities (show other bugs)
Hardware:	All Linux

Importance:	Normal major
Assignee:	Gentoo Security

URL:	https://bugzilla.redhat.com/show_bug....
Whiteboard:	A2 [noglsa cve]
Keywords:

Depends on:
Blocks:

Reported:	2019-03-25 11:34 UTC by Agostino Sarubbo
Modified:	2020-06-04 03:22 UTC (History)
CC List:	1 user (show)

See Also:
Package list:
Runtime testing required:	---

Attachments
Add an attachment (proposed patch, testcase, etc.)

Note You need to log in before you can comment on or make changes to this bug.

Description Agostino Sarubbo gentoo-dev

2019-03-25 11:34:24 UTC

From ${URL} :

rbash in Bash before 4.4-beta2 did not prevent the shell user from modifying BASH_CMDS, thus allowing the user to execute any command with the 
permissions of the shell.

Reference:
https://bugs.launchpad.net/ubuntu/+source/bash/+bug/1803441

Upstream commit:
http://git.savannah.gnu.org/cgit/bash.git/commit/CHANGES?h=bash-4.4-testing&id=955543877583837c85470f7fb8a97b7aa8d45e6c


@maintainer(s): after the bump, in case we need to stabilize the package, please let us know if it is ready for the stabilization or not.

Comment 1 Lars Wendler (Polynomial-C) (RETIRED) gentoo-dev

2019-03-25 11:55:31 UTC

We already have app-shells/bash-4.4_p23-r1 stable. So no action required from base-system here.