Bug 636186 (CVE-2017-1000382)

Summary:	app-editors/vim: umask is ignored when creating a swap file
Product:	Gentoo Security	Reporter:	Aleksandr Wagner (Kivak) <alwag>
Component:	Vulnerabilities	Assignee:	Gentoo Security <security>
Status:	RESOLVED WONTFIX
Severity:	minor	CC:	arthur, vim
Priority:	Normal
Version:	unspecified
Hardware:	All
OS:	Linux
Whiteboard:	B4 [noglsa cve]
Package list:		Runtime testing required:	---

Description Aleksandr Wagner (Kivak) 2017-11-01 19:00:55 UTC

CVE-2017-1000382 (https://nvd.nist.gov/vuln/detail/CVE-2017-1000382):

VIM version 8.0.1187 (and other versions most likely) ignores umask when creating a swap file ("[ORIGINAL_FILENAME].swp") resulting in files that may be world readable or otherwise accessible in ways not intended by the user running the vi binary.

References:

http://www.openwall.com/lists/oss-security/2017/10/31/1

@ Maintainer(s): Please confirm which versions are vulnerable in the tree.

Note: It seems no official patches have been released yet.

Comment 1 Aaron Bauman (RETIRED) gentoo-dev

2018-04-08 21:17:16 UTC

This amounts to user hardening and upstream is probably not going to address it as it would break things.  Additionally, web servers should be hardened to combat such issues.

Comment 2 Larry the Git Cow gentoo-dev

2018-04-08 21:37:03 UTC

The bug has been referenced in the following commit(s):

https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=80c7123e4565333a0005c01e7f0dd570fbd39d8a

commit 80c7123e4565333a0005c01e7f0dd570fbd39d8a
Author:     Patrice Clement <monsieurp@gentoo.org>
AuthorDate: 2018-04-08 21:36:19 +0000
Commit:     Patrice Clement <monsieurp@gentoo.org>
CommitDate: 2018-04-08 21:36:54 +0000

    app-editors/gvim: remove vulnerable versions.
    
    Bug: https://bugs.gentoo.org/636186
    Package-Manager: Portage-2.3.24, Repoman-2.3.6

 app-editors/gvim/Manifest             |   3 -
 app-editors/gvim/gvim-8.0.0386.ebuild | 407 ----------------------------------
 app-editors/gvim/gvim-8.0.1188.ebuild | 371 -------------------------------
 3 files changed, 781 deletions(-)}