Bug 635118 (CVE-2017-15804)

Summary:	<sys-libs/glibc-2.25-r9: glob function contains a buffer overflow during unescaping of user names with the ~ operator
Product:	Gentoo Security	Reporter:	Aleksandr Wagner (Kivak) <alwag>
Component:	Vulnerabilities	Assignee:	Gentoo Security <security>
Status:	RESOLVED FIXED
Severity:	normal
Priority:	Normal
Version:	unspecified
Hardware:	All
OS:	Linux
URL:	https://sourceware.org/bugzilla/show_bug.cgi?id=22332
Whiteboard:	A3 [glsa+ cve]
Package list:		Runtime testing required:	---
Bug Depends on:	637140, 646492
Bug Blocks:

Description Aleksandr Wagner (Kivak) 2017-10-22 22:29:45 UTC

CVE-2017-15804 (http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-15804):

The glob function in glob.c in the GNU C Library (aka glibc or libc6) before 2.27 contains a buffer overflow during unescaping of user names with the ~ operator. 

References:

https://sourceware.org/bugzilla/show_bug.cgi?id=22332
https://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commit;h=a159b53fa059947cc2548e3b0d5bdcf7b9630ba8

Comment 1 Andreas K. Hüttel archtester

2017-10-25 22:00:29 UTC

Patch added to gentoo/2.25 and gentoo/2.26 branch

Comment 2 Larry the Git Cow gentoo-dev

2017-10-27 23:30:35 UTC

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

https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=d93339d7f5bfe90901a8c6921d1c221b54c8302a

commit d93339d7f5bfe90901a8c6921d1c221b54c8302a
Author:     Andreas K. Hüttel <dilfridge@gentoo.org>
AuthorDate: 2017-10-27 23:30:07 +0000
Commit:     Andreas K. Hüttel <dilfridge@gentoo.org>
CommitDate: 2017-10-27 23:30:19 +0000

    sys-libs/glibc: Revision bump to 2.25 patchlevel 12, unkeyworded so far
    
    Resolves CVE-2017-15670, CVE-2017-15804, CVE-2016-6261
    
    Bug: https://bugs.gentoo.org/634920
    Bug: https://bugs.gentoo.org/635010
    Bug: https://bugs.gentoo.org/635118
    Package-Manager: Portage-2.3.13, Repoman-2.3.4

 sys-libs/glibc/Manifest             |   1 +
 sys-libs/glibc/glibc-2.25-r9.ebuild | 154 ++++++++++++++++++++++++++++++++++++
 2 files changed, 155 insertions(+)}

Comment 3 Andreas K. Hüttel archtester

2017-11-29 12:01:51 UTC

All vulnerable versions are masked. No further cleanup (toolchain package). 
Nothing to do for toolchain here anymore.

Comment 4 GLSAMaker/CVETool Bot gentoo-dev

2018-04-04 01:55:26 UTC

This issue was resolved and addressed in
 GLSA 201804-02 at https://security.gentoo.org/glsa/201804-02
by GLSA coordinator Aaron Bauman (b-man).